/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/float_req_bl_0720.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:12:58,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:12:58,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:12:58,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 13:12:58,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 13:12:58,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 13:12:58,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 13:12:58,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 13:12:58,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 13:12:58,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 13:12:58,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 13:12:58,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 13:12:58,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:12:58,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:12:58,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:12:58,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:12:58,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:12:58,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:12:58,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:12:58,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:12:58,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:12:58,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:12:58,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:12:58,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:12:58,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:12:58,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:12:58,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:12:58,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:12:58,395 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-23 13:12:58,449 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:12:58,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:12:58,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:12:58,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:12:58,455 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:12:58,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:12:58,455 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:12:58,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:12:58,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:12:58,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:12:58,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:12:58,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:12:58,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:12:58,458 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:12:58,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:12:58,458 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:12:58,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:12:58,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:12:58,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:12:58,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:12:58,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:12:58,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:12:58,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:12:58,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:12:58,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:12:58,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:12:58,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:12:58,461 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:12:58,461 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:12:58,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:12:58,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:12:58,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:12:58,955 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:12:58,956 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:12:58,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0720.c [2021-02-23 13:12:59,049 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fea8fb6b/5ab0285cc9e84d4a9fc31de7bebc46be/FLAG0c8f3b0d0 [2021-02-23 13:12:59,830 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:12:59,832 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0720.c [2021-02-23 13:12:59,840 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fea8fb6b/5ab0285cc9e84d4a9fc31de7bebc46be/FLAG0c8f3b0d0 [2021-02-23 13:13:00,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fea8fb6b/5ab0285cc9e84d4a9fc31de7bebc46be [2021-02-23 13:13:00,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:13:00,178 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:13:00,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:13:00,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:13:00,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:13:00,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:13:00" (1/1) ... [2021-02-23 13:13:00,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@389281b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:00, skipping insertion in model container [2021-02-23 13:13:00,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:13:00" (1/1) ... [2021-02-23 13:13:00,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:13:00,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:13:00,395 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/float_req_bl_0720.c[1929,1942] [2021-02-23 13:13:00,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:13:00,412 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:13:00,444 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/float_req_bl_0720.c[1929,1942] [2021-02-23 13:13:00,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:13:00,462 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:13:00,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:00 WrapperNode [2021-02-23 13:13:00,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:13:00,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:13:00,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:13:00,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:13:00,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:00" (1/1) ... [2021-02-23 13:13:00,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:00" (1/1) ... [2021-02-23 13:13:00,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:00" (1/1) ... [2021-02-23 13:13:00,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:00" (1/1) ... [2021-02-23 13:13:00,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:00" (1/1) ... [2021-02-23 13:13:00,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:00" (1/1) ... [2021-02-23 13:13:00,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:00" (1/1) ... [2021-02-23 13:13:00,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:13:00,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:13:00,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:13:00,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:13:00,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:13:00,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:13:00,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:13:00,674 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:13:00,674 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2021-02-23 13:13:00,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2021-02-23 13:13:00,674 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:13:00,675 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:13:00,675 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:13:00,676 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:13:00,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:13:00,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2021-02-23 13:13:00,678 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2021-02-23 13:13:00,679 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2021-02-23 13:13:00,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 13:13:00,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:13:00,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:13:00,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:13:00,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 13:13:00,684 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:13:00,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:13:00,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:13:00,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:13:01,414 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:13:01,414 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-23 13:13:01,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:13:01 BoogieIcfgContainer [2021-02-23 13:13:01,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:13:01,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:13:01,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:13:01,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:13:01,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:13:00" (1/3) ... [2021-02-23 13:13:01,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6e1add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:13:01, skipping insertion in model container [2021-02-23 13:13:01,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:00" (2/3) ... [2021-02-23 13:13:01,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6e1add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:13:01, skipping insertion in model container [2021-02-23 13:13:01,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:13:01" (3/3) ... [2021-02-23 13:13:01,427 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0720.c [2021-02-23 13:13:01,436 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:13:01,441 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:13:01,464 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:13:01,493 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:13:01,493 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:13:01,493 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:13:01,494 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:13:01,494 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:13:01,494 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:13:01,494 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:13:01,494 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:13:01,516 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2021-02-23 13:13:01,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-02-23 13:13:01,523 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:13:01,524 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] [2021-02-23 13:13:01,524 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:13:01,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:13:01,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1455418548, now seen corresponding path program 1 times [2021-02-23 13:13:01,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:13:01,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134706249] [2021-02-23 13:13:01,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:13:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:13:01,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:01,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:01,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:01,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:01,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:13:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:13:01,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:01,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:01,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:13:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:13:01,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:01,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:01,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:01,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:01,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 13:13:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:13:01,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:01,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:01,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:13:01,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134706249] [2021-02-23 13:13:01,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:13:01,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 13:13:01,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256979990] [2021-02-23 13:13:01,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 13:13:01,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:13:01,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 13:13:01,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 13:13:01,938 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2021-02-23 13:13:02,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:13:02,305 INFO L93 Difference]: Finished difference Result 84 states and 118 transitions. [2021-02-23 13:13:02,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:13:02,307 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2021-02-23 13:13:02,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:13:02,319 INFO L225 Difference]: With dead ends: 84 [2021-02-23 13:13:02,320 INFO L226 Difference]: Without dead ends: 42 [2021-02-23 13:13:02,324 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 [2021-02-23 13:13:02,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-02-23 13:13:02,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-02-23 13:13:02,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-02-23 13:13:02,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2021-02-23 13:13:02,375 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 21 [2021-02-23 13:13:02,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:13:02,375 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2021-02-23 13:13:02,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 13:13:02,376 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2021-02-23 13:13:02,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-23 13:13:02,377 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:13:02,377 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] [2021-02-23 13:13:02,378 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:13:02,378 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:13:02,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:13:02,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1136495776, now seen corresponding path program 1 times [2021-02-23 13:13:02,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:13:02,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111521954] [2021-02-23 13:13:02,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:13:02,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:13:02,435 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:13:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:13:02,519 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:13:02,577 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:13:02,578 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:13:02,579 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:13:02,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:13:02 BoogieIcfgContainer [2021-02-23 13:13:02,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:13:02,620 INFO L168 Benchmark]: Toolchain (without parser) took 2453.56 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 67.1 MB in the end (delta: 59.4 MB). Peak memory consumption was 59.7 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:02,621 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:13:02,622 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.73 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 114.1 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:02,623 INFO L168 Benchmark]: Boogie Preprocessor took 92.89 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 112.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:02,624 INFO L168 Benchmark]: RCFGBuilder took 857.26 ms. Allocated memory is still 151.0 MB. Free memory was 112.2 MB in the beginning and 123.7 MB in the end (delta: -11.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:02,625 INFO L168 Benchmark]: TraceAbstraction took 1199.70 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 67.1 MB in the end (delta: 56.1 MB). Peak memory consumption was 56.6 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:02,628 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 283.73 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 114.1 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 92.89 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 112.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 857.26 ms. Allocated memory is still 151.0 MB. Free memory was 112.2 MB in the beginning and 123.7 MB in the end (delta: -11.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1199.70 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 67.1 MB in the end (delta: 56.1 MB). Peak memory consumption was 56.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 98]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 15, overapproximation of someBinaryArithmeticFLOAToperation at line 32, overapproximation of bitwiseAnd at line 29. Possible FailurePath: [L17] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; VAL [\old(one_sqrt)=4294967301, \old(tiny_sqrt)=4294967299, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L93] float x = 0.0f / 0.0f; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L94] CALL, EXPR __ieee754_sqrtf(x) VAL [\old(x)=4294967300, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L20] float z; [L21] __uint32_t r, hx; [L22] __int32_t ix, s, q, m, t, i; VAL [\old(x)=4294967300, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967300] [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (ix) = gf_u.word [L29] hx = ix & 0x7fffffff VAL [\old(x)=4294967300, ix=-1, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967300] [L31] COND TRUE !((hx) < 0x7f800000L) [L32] return x * x + x; VAL [\old(x)=4294967300, hx=2139095040, ix=-1, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967300] [L94] RET, EXPR __ieee754_sqrtf(x) VAL [__ieee754_sqrtf(x)=4294967303, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967300] [L94] float res = __ieee754_sqrtf(x); [L97] CALL, EXPR isnan_float(res) VAL [\old(x)=4294967303, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L15] return x != x; VAL [\old(x)=4294967303, \result=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967303] [L97] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, one_sqrt=1, res=4294967303, tiny_sqrt=1/1000000000000000000000000000000, x=4294967300] [L97] COND TRUE !isnan_float(res) [L98] reach_error() VAL [one_sqrt=1, res=4294967303, tiny_sqrt=1/1000000000000000000000000000000, x=4294967300] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 8 SDslu, 46 SDs, 0 SdLazy, 52 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=46occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 1360 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...