/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_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:20:32,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:20:32,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:20:32,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-19 17:20:32,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:20:32,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:20:32,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:20:32,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:20:32,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:20:32,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:20:32,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:20:32,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:20:32,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:20:32,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:20:32,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:20:32,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:20:32,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 17:20:32,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:20:32,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:20:32,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:20:32,706 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 17:20:32,765 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:20:32,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:20:32,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:20:32,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:20:32,771 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:20:32,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:20:32,772 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:20:32,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:20:32,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:20:32,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:20:32,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:20:32,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:20:32,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:20:32,775 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:20:32,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:20:32,775 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:20:32,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:20:32,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:20:32,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:20:32,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:20:32,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:20:32,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:20:32,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:20:32,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:20:32,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:20:32,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:20:32,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:20:32,778 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:20:32,778 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:20:33,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:20:33,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:20:33,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:20:33,216 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:20:33,217 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:20:33,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2021-02-19 17:20:33,310 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5cfcd3f1/9bd79515f783410790e4243dcc7a46f4/FLAG52cb5a5fa [2021-02-19 17:20:34,090 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:20:34,091 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2021-02-19 17:20:34,104 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5cfcd3f1/9bd79515f783410790e4243dcc7a46f4/FLAG52cb5a5fa [2021-02-19 17:20:34,402 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5cfcd3f1/9bd79515f783410790e4243dcc7a46f4 [2021-02-19 17:20:34,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:20:34,417 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:20:34,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:20:34,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:20:34,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:20:34,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:20:34" (1/1) ... [2021-02-19 17:20:34,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c26ec1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:34, skipping insertion in model container [2021-02-19 17:20:34,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:20:34" (1/1) ... [2021-02-19 17:20:34,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:20:34,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:20:34,707 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_1131b.c[2947,2960] [2021-02-19 17:20:34,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:20:34,721 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:20:34,809 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_1131b.c[2947,2960] [2021-02-19 17:20:34,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:20:34,857 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:20:34,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:34 WrapperNode [2021-02-19 17:20:34,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:20:34,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:20:34,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:20:34,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:20:34,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:34" (1/1) ... [2021-02-19 17:20:34,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:34" (1/1) ... [2021-02-19 17:20:34,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:34" (1/1) ... [2021-02-19 17:20:34,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:34" (1/1) ... [2021-02-19 17:20:34,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:34" (1/1) ... [2021-02-19 17:20:34,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:34" (1/1) ... [2021-02-19 17:20:34,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:34" (1/1) ... [2021-02-19 17:20:34,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:20:34,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:20:34,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:20:34,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:20:34,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:34" (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 17:20:35,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:20:35,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:20:35,121 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:20:35,122 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2021-02-19 17:20:35,122 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2021-02-19 17:20:35,122 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:20:35,123 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:20:35,123 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:20:35,124 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:20:35,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:20:35,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2021-02-19 17:20:35,125 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2021-02-19 17:20:35,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-19 17:20:35,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:20:35,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:20:35,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-19 17:20:35,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:20:35,128 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2021-02-19 17:20:35,128 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:20:35,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:20:35,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:20:35,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-02-19 17:20:35,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:20:35,827 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:20:35,827 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-02-19 17:20:35,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:20:35 BoogieIcfgContainer [2021-02-19 17:20:35,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:20:35,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:20:35,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:20:35,835 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:20:35,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:20:34" (1/3) ... [2021-02-19 17:20:35,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512746d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:20:35, skipping insertion in model container [2021-02-19 17:20:35,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:34" (2/3) ... [2021-02-19 17:20:35,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512746d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:20:35, skipping insertion in model container [2021-02-19 17:20:35,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:20:35" (3/3) ... [2021-02-19 17:20:35,839 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2021-02-19 17:20:35,844 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:20:35,849 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:20:35,868 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:20:35,897 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:20:35,898 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:20:35,898 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:20:35,898 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:20:35,898 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:20:35,898 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:20:35,898 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:20:35,899 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:20:35,918 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2021-02-19 17:20:35,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-19 17:20:35,925 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:20:35,926 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] [2021-02-19 17:20:35,927 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:20:35,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:20:35,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1365987300, now seen corresponding path program 1 times [2021-02-19 17:20:35,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:20:35,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401594735] [2021-02-19 17:20:35,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:20:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:20:36,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:20:36,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:20:36,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:20:36,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:20:36,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:20:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:20:36,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:20:36,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:20:36,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 17:20:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:20:36,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:20:36,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:20:36,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:20:36,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:20:36,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-19 17:20:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:20:36,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:20:36,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:20:36,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:20:36,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:20:36,315 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 17:20:36,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401594735] [2021-02-19 17:20:36,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:20:36,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-19 17:20:36,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171886431] [2021-02-19 17:20:36,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-19 17:20:36,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:20:36,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-19 17:20:36,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 17:20:36,344 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2021-02-19 17:20:36,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:20:36,638 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2021-02-19 17:20:36,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 17:20:36,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2021-02-19 17:20:36,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:20:36,653 INFO L225 Difference]: With dead ends: 112 [2021-02-19 17:20:36,653 INFO L226 Difference]: Without dead ends: 55 [2021-02-19 17:20:36,658 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 [2021-02-19 17:20:36,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-02-19 17:20:36,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-02-19 17:20:36,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-02-19 17:20:36,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2021-02-19 17:20:36,726 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2021-02-19 17:20:36,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:20:36,727 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2021-02-19 17:20:36,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-19 17:20:36,727 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2021-02-19 17:20:36,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-19 17:20:36,729 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:20:36,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:20:36,731 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:20:36,731 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:20:36,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:20:36,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1407551246, now seen corresponding path program 1 times [2021-02-19 17:20:36,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:20:36,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859170951] [2021-02-19 17:20:36,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:20:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:20:36,842 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:20:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:20:36,938 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:20:36,980 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-19 17:20:36,980 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-19 17:20:36,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 17:20:37,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:20:37 BoogieIcfgContainer [2021-02-19 17:20:37,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:20:37,032 INFO L168 Benchmark]: Toolchain (without parser) took 2624.36 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 81.5 MB in the end (delta: 44.9 MB). Peak memory consumption was 46.3 MB. Max. memory is 8.0 GB. [2021-02-19 17:20:37,033 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 131.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:20:37,034 INFO L168 Benchmark]: CACSL2BoogieTranslator took 439.96 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 113.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-19 17:20:37,034 INFO L168 Benchmark]: Boogie Preprocessor took 120.09 ms. Allocated memory is still 151.0 MB. Free memory was 113.2 MB in the beginning and 111.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-19 17:20:37,035 INFO L168 Benchmark]: RCFGBuilder took 847.22 ms. Allocated memory is still 151.0 MB. Free memory was 111.2 MB in the beginning and 112.8 MB in the end (delta: -1.7 MB). Peak memory consumption was 9.3 MB. Max. memory is 8.0 GB. [2021-02-19 17:20:37,036 INFO L168 Benchmark]: TraceAbstraction took 1198.75 ms. Allocated memory is still 151.0 MB. Free memory was 112.2 MB in the beginning and 81.5 MB in the end (delta: 30.8 MB). Peak memory consumption was 31.7 MB. Max. memory is 8.0 GB. [2021-02-19 17:20:37,040 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 131.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 439.96 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 113.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 120.09 ms. Allocated memory is still 151.0 MB. Free memory was 113.2 MB in the beginning and 111.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 847.22 ms. Allocated memory is still 151.0 MB. Free memory was 111.2 MB in the beginning and 112.8 MB in the end (delta: -1.7 MB). Peak memory consumption was 9.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1198.75 ms. Allocated memory is still 151.0 MB. Free memory was 112.2 MB in the beginning and 81.5 MB in the end (delta: 30.8 MB). Peak memory consumption was 31.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 137]: 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 136, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseXor at line 33. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=4294967309, \old(Zero_fmod)=4294967308, \old(Zero_fmod)=4294967302, one_fmod=1, Zero_fmod={5:0}] [L128] float x = __VERIFIER_nondet_float(); [L129] float y = -1.0f / 0.0f; VAL [one_fmod=1, x=4294967300, Zero_fmod={5:0}] [L131] CALL isfinite_float(x) VAL [\old(x)=4294967300, one_fmod=1, Zero_fmod={5:0}] [L111] __int32_t ix; VAL [\old(x)=4294967300, one_fmod=1, x=4294967300, Zero_fmod={5:0}] [L113] ieee_float_shape_type gf_u; [L114] gf_u.value = (x) [L115] EXPR gf_u.word [L115] (ix) = gf_u.word [L117] ix &= 0x7fffffff [L118] return (((ix) < 0x7f800000L)); VAL [\old(x)=4294967300, \result=1, ix=2139095039, one_fmod=1, x=4294967300, Zero_fmod={5:0}] [L131] RET isfinite_float(x) VAL [isfinite_float(x)=1, one_fmod=1, x=4294967300, Zero_fmod={5:0}] [L131] COND TRUE isfinite_float(x) [L133] CALL, EXPR fmod_float(x, y) VAL [\old(x)=4294967300, \old(y)=4294967299, one_fmod=1, Zero_fmod={5:0}] [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=4294967300, \old(y)=4294967299, one_fmod=1, x=4294967300, y=4294967299, Zero_fmod={5:0}] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff VAL [\old(x)=4294967300, \old(y)=4294967299, one_fmod=1, sx=13, x=4294967300, y=4294967299, Zero_fmod={5:0}] [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); VAL [\old(x)=4294967300, \old(y)=4294967299, hx=2139095040, hy=0, one_fmod=1, sx=13, x=4294967300, y=4294967299, Zero_fmod={5:0}] [L133] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=4294967298, one_fmod=1, x=4294967300, y=4294967299, Zero_fmod={5:0}] [L133] float res = fmod_float(x, y); [L136] COND TRUE res != x VAL [one_fmod=1, res=4294967298, x=4294967300, y=4294967299, Zero_fmod={5:0}] [L137] reach_error() VAL [one_fmod=1, res=4294967298, x=4294967300, y=4294967299, Zero_fmod={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 6 SDslu, 63 SDs, 0 SdLazy, 78 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 2088 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...