/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 [2021-02-21 15:47:55,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 15:47:55,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 15:47:55,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 15:47:55,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 15:47:55,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 15:47:55,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 15:47:55,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 15:47:55,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 15:47:55,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 15:47:55,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 15:47:55,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 15:47:55,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 15:47:55,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 15:47:55,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 15:47:55,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 15:47:55,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 15:47:55,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 15:47:55,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 15:47:55,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 15:47:55,139 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-21 15:47:55,190 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 15:47:55,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 15:47:55,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 15:47:55,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 15:47:55,195 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 15:47:55,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 15:47:55,195 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 15:47:55,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 15:47:55,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 15:47:55,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 15:47:55,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 15:47:55,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 15:47:55,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 15:47:55,197 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 15:47:55,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 15:47:55,197 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 15:47:55,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 15:47:55,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 15:47:55,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 15:47:55,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 15:47:55,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:47:55,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 15:47:55,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 15:47:55,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 15:47:55,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 15:47:55,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 15:47:55,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 15:47:55,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 15:47:55,201 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 15:47:55,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 15:47:55,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 15:47:55,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 15:47:55,614 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 15:47:55,615 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 15:47:55,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2021-02-21 15:47:55,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3569b3d45/6403d62415994f4ab6db072c6beafd7c/FLAGc72166040 [2021-02-21 15:47:56,426 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 15:47:56,427 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2021-02-21 15:47:56,435 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3569b3d45/6403d62415994f4ab6db072c6beafd7c/FLAGc72166040 [2021-02-21 15:47:56,774 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3569b3d45/6403d62415994f4ab6db072c6beafd7c [2021-02-21 15:47:56,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 15:47:56,791 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 15:47:56,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:56,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 15:47:56,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 15:47:56,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:56" (1/1) ... [2021-02-21 15:47:56,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b1a5165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:56, skipping insertion in model container [2021-02-21 15:47:56,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:56" (1/1) ... [2021-02-21 15:47:56,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 15:47:56,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 15:47:57,036 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] [2021-02-21 15:47:57,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:57,049 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 15:47:57,105 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] [2021-02-21 15:47:57,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:57,125 INFO L208 MainTranslator]: Completed translation [2021-02-21 15:47:57,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:57 WrapperNode [2021-02-21 15:47:57,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:57,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 15:47:57,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 15:47:57,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 15:47:57,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:57" (1/1) ... [2021-02-21 15:47:57,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:57" (1/1) ... [2021-02-21 15:47:57,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:57" (1/1) ... [2021-02-21 15:47:57,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:57" (1/1) ... [2021-02-21 15:47:57,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:57" (1/1) ... [2021-02-21 15:47:57,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:57" (1/1) ... [2021-02-21 15:47:57,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:57" (1/1) ... [2021-02-21 15:47:57,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 15:47:57,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 15:47:57,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 15:47:57,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 15:47:57,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:47:57,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 15:47:57,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 15:47:57,291 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 15:47:57,291 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2021-02-21 15:47:57,291 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2021-02-21 15:47:57,291 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 15:47:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 15:47:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 15:47:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 15:47:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 15:47:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2021-02-21 15:47:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2021-02-21 15:47:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 15:47:57,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 15:47:57,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 15:47:57,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 15:47:57,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 15:47:57,293 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2021-02-21 15:47:57,293 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 15:47:57,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 15:47:57,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 15:47:57,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-02-21 15:47:57,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 15:47:57,906 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 15:47:57,906 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-02-21 15:47:57,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:57 BoogieIcfgContainer [2021-02-21 15:47:57,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 15:47:57,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 15:47:57,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 15:47:57,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 15:47:57,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:47:56" (1/3) ... [2021-02-21 15:47:57,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f22d9b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:57, skipping insertion in model container [2021-02-21 15:47:57,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:57" (2/3) ... [2021-02-21 15:47:57,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f22d9b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:57, skipping insertion in model container [2021-02-21 15:47:57,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:57" (3/3) ... [2021-02-21 15:47:57,933 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2021-02-21 15:47:57,942 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 15:47:57,948 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 15:47:57,979 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 15:47:58,035 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 15:47:58,035 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 15:47:58,036 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 15:47:58,036 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 15:47:58,036 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 15:47:58,036 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 15:47:58,036 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 15:47:58,036 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 15:47:58,075 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2021-02-21 15:47:58,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-21 15:47:58,084 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:58,085 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] [2021-02-21 15:47:58,085 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:58,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:58,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1365987300, now seen corresponding path program 1 times [2021-02-21 15:47:58,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:58,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112602946] [2021-02-21 15:47:58,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:58,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:58,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:58,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:58,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:58,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:47:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:58,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:58,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:58,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:47:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:58,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:58,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:58,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:58,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:58,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 15:47:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:58,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:58,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:58,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:58,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:58,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 15:47:58,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112602946] [2021-02-21 15:47:58,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:47:58,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 15:47:58,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917470451] [2021-02-21 15:47:58,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 15:47:58,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:47:58,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 15:47:58,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 15:47:58,567 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2021-02-21 15:47:58,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:47:58,930 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2021-02-21 15:47:58,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 15:47:58,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2021-02-21 15:47:58,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:47:58,942 INFO L225 Difference]: With dead ends: 112 [2021-02-21 15:47:58,942 INFO L226 Difference]: Without dead ends: 55 [2021-02-21 15:47:58,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 15:47:58,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-02-21 15:47:58,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-02-21 15:47:58,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-02-21 15:47:58,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2021-02-21 15:47:58,997 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2021-02-21 15:47:58,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:47:58,998 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2021-02-21 15:47:58,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 15:47:58,998 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2021-02-21 15:47:58,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-21 15:47:59,000 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:59,000 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] [2021-02-21 15:47:59,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 15:47:59,000 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:59,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:59,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1407551246, now seen corresponding path program 1 times [2021-02-21 15:47:59,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:59,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432203442] [2021-02-21 15:47:59,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:59,127 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:59,241 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:59,297 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 15:47:59,298 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 15:47:59,299 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 15:47:59,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:47:59 BoogieIcfgContainer [2021-02-21 15:47:59,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 15:47:59,343 INFO L168 Benchmark]: Toolchain (without parser) took 2562.74 ms. Allocated memory is still 174.1 MB. Free memory was 148.3 MB in the beginning and 74.3 MB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:59,343 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 174.1 MB. Free memory is still 144.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:47:59,344 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.27 ms. Allocated memory is still 174.1 MB. Free memory was 147.2 MB in the beginning and 134.9 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:59,345 INFO L168 Benchmark]: Boogie Preprocessor took 58.44 ms. Allocated memory is still 174.1 MB. Free memory was 134.9 MB in the beginning and 132.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:59,346 INFO L168 Benchmark]: RCFGBuilder took 722.44 ms. Allocated memory is still 174.1 MB. Free memory was 132.7 MB in the beginning and 143.0 MB in the end (delta: -10.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:59,347 INFO L168 Benchmark]: TraceAbstraction took 1428.00 ms. Allocated memory is still 174.1 MB. Free memory was 142.5 MB in the beginning and 74.3 MB in the end (delta: 68.2 MB). Peak memory consumption was 68.2 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:59,351 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 174.1 MB. Free memory is still 144.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 333.27 ms. Allocated memory is still 174.1 MB. Free memory was 147.2 MB in the beginning and 134.9 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 58.44 ms. Allocated memory is still 174.1 MB. Free memory was 134.9 MB in the beginning and 132.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 722.44 ms. Allocated memory is still 174.1 MB. Free memory was 132.7 MB in the beginning and 143.0 MB in the end (delta: -10.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1428.00 ms. Allocated memory is still 174.1 MB. Free memory was 142.5 MB in the beginning and 74.3 MB in the end (delta: 68.2 MB). Peak memory consumption was 68.2 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: 1.2s, 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, 0.1s 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...