/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_1031.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:19:36,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:19:36,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:19:36,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 17:19:36,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 17:19:36,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 17:19:36,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 17:19:36,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 17:19:36,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 17:19:36,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 17:19:36,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 17:19:36,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 17:19:36,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:19:36,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:19:36,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:19:36,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:19:36,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:19:36,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:19:36,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:19:36,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:19:36,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:19:36,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:19:36,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:19:36,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:19:36,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 17:19:36,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:19:36,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:19:36,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:19:36,681 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 [2021-02-19 17:19:36,731 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:19:36,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:19:36,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:19:36,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:19:36,736 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:19:36,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:19:36,737 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:19:36,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:19:36,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:19:36,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:19:36,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:19:36,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:19:36,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:19:36,740 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:19:36,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:19:36,740 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:19:36,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:19:36,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:19:36,741 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:19:36,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:19:36,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:19:36,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:19:36,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:19:36,742 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:19:36,742 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:19:36,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:19:36,743 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:19:36,743 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:19:36,743 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:19:37,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:19:37,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:19:37,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:19:37,151 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:19:37,152 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:19:37,153 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1031.c [2021-02-19 17:19:37,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaada7ef8/d9e0b4c09faa482fa9088ff8732e270a/FLAG7fd7b640b [2021-02-19 17:19:37,827 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:19:37,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1031.c [2021-02-19 17:19:37,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaada7ef8/d9e0b4c09faa482fa9088ff8732e270a/FLAG7fd7b640b [2021-02-19 17:19:38,216 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaada7ef8/d9e0b4c09faa482fa9088ff8732e270a [2021-02-19 17:19:38,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:19:38,234 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:19:38,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:19:38,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:19:38,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:19:38,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:19:38" (1/1) ... [2021-02-19 17:19:38,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e09bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:38, skipping insertion in model container [2021-02-19 17:19:38,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:19:38" (1/1) ... [2021-02-19 17:19:38,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:19:38,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:19:38,504 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_1031.c[2057,2070] [2021-02-19 17:19:38,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:19:38,517 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:19:38,548 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_1031.c[2057,2070] [2021-02-19 17:19:38,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:19:38,567 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:19:38,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:38 WrapperNode [2021-02-19 17:19:38,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:19:38,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:19:38,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:19:38,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:19:38,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:38" (1/1) ... [2021-02-19 17:19:38,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:38" (1/1) ... [2021-02-19 17:19:38,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:38" (1/1) ... [2021-02-19 17:19:38,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:38" (1/1) ... [2021-02-19 17:19:38,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:38" (1/1) ... [2021-02-19 17:19:38,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:38" (1/1) ... [2021-02-19 17:19:38,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:38" (1/1) ... [2021-02-19 17:19:38,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:19:38,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:19:38,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:19:38,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:19:38,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:38" (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 [2021-02-19 17:19:38,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:19:38,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:19:38,743 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:19:38,743 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-19 17:19:38,743 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2021-02-19 17:19:38,744 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:19:38,744 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:19:38,744 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:19:38,746 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:19:38,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:19:38,747 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-19 17:19:38,747 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2021-02-19 17:19:38,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-19 17:19:38,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:19:38,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:19:38,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:19:38,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-19 17:19:38,753 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:19:38,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:19:38,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:19:38,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:19:39,387 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:19:39,388 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-19 17:19:39,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:19:39 BoogieIcfgContainer [2021-02-19 17:19:39,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:19:39,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:19:39,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:19:39,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:19:39,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:19:38" (1/3) ... [2021-02-19 17:19:39,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7abb9bdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:19:39, skipping insertion in model container [2021-02-19 17:19:39,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:38" (2/3) ... [2021-02-19 17:19:39,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7abb9bdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:19:39, skipping insertion in model container [2021-02-19 17:19:39,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:19:39" (3/3) ... [2021-02-19 17:19:39,405 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2021-02-19 17:19:39,413 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:19:39,420 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:19:39,444 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:19:39,488 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:19:39,489 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:19:39,489 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:19:39,489 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:19:39,489 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:19:39,490 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:19:39,490 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:19:39,490 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:19:39,513 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2021-02-19 17:19:39,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-19 17:19:39,520 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:19:39,522 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] [2021-02-19 17:19:39,522 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:19:39,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:19:39,531 INFO L82 PathProgramCache]: Analyzing trace with hash 696359726, now seen corresponding path program 1 times [2021-02-19 17:19:39,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:19:39,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425500196] [2021-02-19 17:19:39,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:19:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:19:39,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:19:39,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:19:39,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:19:39,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:19:39,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:19:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:19:39,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:19:39,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:19:39,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 17:19:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:19:39,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:19:39,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:19:39,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:19:39,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:19:39,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-19 17:19:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:19:39,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:19:39,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:19:39,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:19:39,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425500196] [2021-02-19 17:19:39,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:19:39,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-19 17:19:39,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356131409] [2021-02-19 17:19:39,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-19 17:19:39,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:19:39,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-19 17:19:39,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 17:19:39,996 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2021-02-19 17:19:40,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:19:40,163 INFO L93 Difference]: Finished difference Result 70 states and 94 transitions. [2021-02-19 17:19:40,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 17:19:40,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2021-02-19 17:19:40,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:19:40,175 INFO L225 Difference]: With dead ends: 70 [2021-02-19 17:19:40,175 INFO L226 Difference]: Without dead ends: 35 [2021-02-19 17:19:40,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-19 17:19:40,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-02-19 17:19:40,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-02-19 17:19:40,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-02-19 17:19:40,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2021-02-19 17:19:40,223 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 23 [2021-02-19 17:19:40,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:19:40,224 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2021-02-19 17:19:40,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-19 17:19:40,224 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2021-02-19 17:19:40,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-19 17:19:40,225 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:19:40,225 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] [2021-02-19 17:19:40,226 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:19:40,226 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:19:40,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:19:40,227 INFO L82 PathProgramCache]: Analyzing trace with hash -862054097, now seen corresponding path program 1 times [2021-02-19 17:19:40,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:19:40,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612405035] [2021-02-19 17:19:40,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:19:40,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:19:40,288 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:19:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:19:40,370 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:19:40,404 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-19 17:19:40,405 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-19 17:19:40,406 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 17:19:40,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:19:40 BoogieIcfgContainer [2021-02-19 17:19:40,442 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:19:40,444 INFO L168 Benchmark]: Toolchain (without parser) took 2222.33 ms. Allocated memory is still 152.0 MB. Free memory was 127.0 MB in the beginning and 80.1 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.7 MB. Max. memory is 8.0 GB. [2021-02-19 17:19:40,444 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:19:40,445 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.70 ms. Allocated memory is still 152.0 MB. Free memory was 125.9 MB in the beginning and 115.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-19 17:19:40,446 INFO L168 Benchmark]: Boogie Preprocessor took 48.26 ms. Allocated memory is still 152.0 MB. Free memory was 115.5 MB in the beginning and 113.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-19 17:19:40,447 INFO L168 Benchmark]: RCFGBuilder took 774.97 ms. Allocated memory is still 152.0 MB. Free memory was 113.5 MB in the beginning and 131.5 MB in the end (delta: -17.9 MB). Peak memory consumption was 19.4 MB. Max. memory is 8.0 GB. [2021-02-19 17:19:40,448 INFO L168 Benchmark]: TraceAbstraction took 1046.83 ms. Allocated memory is still 152.0 MB. Free memory was 130.9 MB in the beginning and 80.1 MB in the end (delta: 50.9 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. [2021-02-19 17:19:40,451 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 152.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 329.70 ms. Allocated memory is still 152.0 MB. Free memory was 125.9 MB in the beginning and 115.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.26 ms. Allocated memory is still 152.0 MB. Free memory was 115.5 MB in the beginning and 113.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 774.97 ms. Allocated memory is still 152.0 MB. Free memory was 113.5 MB in the beginning and 131.5 MB in the end (delta: -17.9 MB). Peak memory consumption was 19.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1046.83 ms. Allocated memory is still 152.0 MB. Free memory was 130.9 MB in the beginning and 80.1 MB in the end (delta: 50.9 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 81]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftRight at line 36, overapproximation of someBinaryArithmeticDOUBLEoperation at line 76, overapproximation of bitwiseAnd at line 37, overapproximation of someBinaryDOUBLEComparisonOperation at line 17. Possible FailurePath: [L76] double x = 0.0 / 0.0; [L77] CALL, EXPR round_double(x) VAL [\old(x)=1072693250] [L20] __int32_t msw, exponent_less_1023; [L21] __uint32_t lsw; VAL [\old(x)=1072693250, x=1072693250] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=1072693250, exponent_less_1023=0, lsw=0, msw=0, x=1072693250] [L29] COND TRUE exponent_less_1023 < 20 VAL [\old(x)=1072693250, exponent_less_1023=0, lsw=0, msw=0, x=1072693250] [L30] COND FALSE !(exponent_less_1023 < 0) [L36] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; VAL [\old(x)=1072693250, exponent_less_1023=0, lsw=0, msw=0, x=1072693250] [L37] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L38] return x; VAL [\old(x)=1072693250, \result=1072693250, exponent_less_1023=0, lsw=0, msw=0, x=1072693250] [L77] RET, EXPR round_double(x) VAL [round_double(x)=1072693250, x=1072693250] [L77] double res = round_double(x); [L80] CALL, EXPR isnan_double(res) VAL [\old(x)=1072693250] [L17] return x != x; VAL [\old(x)=1072693250, \result=0, x=1072693250] [L80] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, res=1072693250, x=1072693250] [L80] COND TRUE !isnan_double(res) [L81] reach_error() VAL [res=1072693250, x=1072693250] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 8 SDslu, 36 SDs, 0 SdLazy, 42 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1408 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...