/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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 15:47:54,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 15:47:54,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 15:47:54,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 15:47:54,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 15:47:54,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 15:47:54,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 15:47:54,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 15:47:55,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 15:47:55,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 15:47:55,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 15:47:55,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 15:47:55,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 15:47:55,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 15:47:55,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 15:47:55,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 15:47:55,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 15:47:55,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 15:47:55,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 15:47:55,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 15:47:55,056 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 15:47:55,087 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 15:47:55,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 15:47:55,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 15:47:55,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 15:47:55,091 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 15:47:55,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 15:47:55,091 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 15:47:55,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 15:47:55,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 15:47:55,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 15:47:55,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 15:47:55,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 15:47:55,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 15:47:55,095 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 15:47:55,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 15:47:55,096 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 15:47:55,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 15:47:55,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 15:47:55,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 15:47:55,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 15:47:55,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:47:55,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 15:47:55,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 15:47:55,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 15:47:55,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 15:47:55,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 15:47:55,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 15:47:55,098 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 15:47:55,099 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 15:47:55,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 15:47:55,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 15:47:55,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 15:47:55,594 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 15:47:55,595 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 15:47:55,596 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2021-02-21 15:47:55,704 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab5f66958/1aed219441d94dcd9e04dcd013d1c401/FLAGddb4e630c [2021-02-21 15:47:56,379 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 15:47:56,380 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2021-02-21 15:47:56,389 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab5f66958/1aed219441d94dcd9e04dcd013d1c401/FLAGddb4e630c [2021-02-21 15:47:56,753 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab5f66958/1aed219441d94dcd9e04dcd013d1c401 [2021-02-21 15:47:56,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 15:47:56,772 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 15:47:56,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:56,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 15:47:56,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 15:47:56,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:56" (1/1) ... [2021-02-21 15:47:56,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f52c78 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 15:47:56,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:56" (1/1) ... [2021-02-21 15:47:56,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 15:47:56,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 15:47:57,088 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_1130a.c[2907,2920] [2021-02-21 15:47:57,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:57,100 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 15:47:57,141 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_1130a.c[2907,2920] [2021-02-21 15:47:57,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:57,161 INFO L208 MainTranslator]: Completed translation [2021-02-21 15:47:57,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:57 WrapperNode [2021-02-21 15:47:57,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:57,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 15:47:57,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 15:47:57,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 15:47:57,178 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 15:47:57,178 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 15:47:57,190 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 15:47:57,191 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 15:47:57,206 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 15:47:57,227 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 15:47:57,233 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 15:47:57,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 15:47:57,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 15:47:57,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 15:47:57,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 15:47:57,247 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 15:47:57,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 15:47:57,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 15:47:57,364 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 15:47:57,364 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2021-02-21 15:47:57,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2021-02-21 15:47:57,365 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 15:47:57,365 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 15:47:57,365 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 15:47:57,365 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 15:47:57,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 15:47:57,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2021-02-21 15:47:57,366 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2021-02-21 15:47:57,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 15:47:57,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 15:47:57,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 15:47:57,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 15:47:57,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 15:47:57,367 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2021-02-21 15:47:57,367 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 15:47:57,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 15:47:57,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 15:47:57,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-02-21 15:47:57,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 15:47:58,054 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 15:47:58,055 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-02-21 15:47:58,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:58 BoogieIcfgContainer [2021-02-21 15:47:58,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 15:47:58,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 15:47:58,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 15:47:58,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 15:47:58,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:47:56" (1/3) ... [2021-02-21 15:47:58,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5560d749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:58, skipping insertion in model container [2021-02-21 15:47:58,064 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 15:47:58,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5560d749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:58, skipping insertion in model container [2021-02-21 15:47:58,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:58" (3/3) ... [2021-02-21 15:47:58,066 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2021-02-21 15:47:58,073 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 15:47:58,078 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 15:47:58,099 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 15:47:58,128 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 15:47:58,128 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 15:47:58,128 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 15:47:58,129 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 15:47:58,129 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 15:47:58,129 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 15:47:58,129 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 15:47:58,129 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 15:47:58,149 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2021-02-21 15:47:58,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-02-21 15:47:58,156 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:58,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 15:47:58,157 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:58,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:58,164 INFO L82 PathProgramCache]: Analyzing trace with hash -684118545, now seen corresponding path program 1 times [2021-02-21 15:47:58,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:58,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302056410] [2021-02-21 15:47:58,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:58,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:58,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:58,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:58,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:58,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:47:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:58,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:58,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:58,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-21 15:47:58,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:58,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:58,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:58,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:58,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:58,602 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 15:47:58,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302056410] [2021-02-21 15:47:58,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:47:58,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 15:47:58,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844061194] [2021-02-21 15:47:58,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 15:47:58,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:47:58,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 15:47:58,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 15:47:58,631 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2021-02-21 15:47:58,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:47:58,890 INFO L93 Difference]: Finished difference Result 116 states and 180 transitions. [2021-02-21 15:47:58,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 15:47:58,893 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2021-02-21 15:47:58,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:47:58,903 INFO L225 Difference]: With dead ends: 116 [2021-02-21 15:47:58,904 INFO L226 Difference]: Without dead ends: 56 [2021-02-21 15:47:58,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 15:47:58,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-02-21 15:47:58,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-02-21 15:47:58,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-02-21 15:47:58,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2021-02-21 15:47:58,960 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 19 [2021-02-21 15:47:58,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:47:58,960 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2021-02-21 15:47:58,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 15:47:58,961 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2021-02-21 15:47:58,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-02-21 15:47:58,962 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:58,962 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] [2021-02-21 15:47:58,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 15:47:58,963 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:58,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:58,964 INFO L82 PathProgramCache]: Analyzing trace with hash -799690004, now seen corresponding path program 1 times [2021-02-21 15:47:58,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:58,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520790082] [2021-02-21 15:47:58,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:59,053 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:59,156 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:59,193 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 15:47:59,193 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 15:47:59,194 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 15:47:59,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:47:59 BoogieIcfgContainer [2021-02-21 15:47:59,233 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 15:47:59,235 INFO L168 Benchmark]: Toolchain (without parser) took 2475.53 ms. Allocated memory is still 155.2 MB. Free memory was 130.4 MB in the beginning and 55.2 MB in the end (delta: 75.3 MB). Peak memory consumption was 76.5 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:59,236 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 155.2 MB. Free memory is still 128.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:47:59,237 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.08 ms. Allocated memory is still 155.2 MB. Free memory was 129.3 MB in the beginning and 117.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:59,238 INFO L168 Benchmark]: Boogie Preprocessor took 77.98 ms. Allocated memory is still 155.2 MB. Free memory was 117.6 MB in the beginning and 115.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:59,239 INFO L168 Benchmark]: RCFGBuilder took 814.68 ms. Allocated memory is still 155.2 MB. Free memory was 115.5 MB in the beginning and 120.7 MB in the end (delta: -5.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:59,240 INFO L168 Benchmark]: TraceAbstraction took 1174.78 ms. Allocated memory is still 155.2 MB. Free memory was 120.2 MB in the beginning and 55.2 MB in the end (delta: 65.0 MB). Peak memory consumption was 65.0 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:59,243 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 155.2 MB. Free memory is still 128.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 387.08 ms. Allocated memory is still 155.2 MB. Free memory was 129.3 MB in the beginning and 117.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 77.98 ms. Allocated memory is still 155.2 MB. Free memory was 117.6 MB in the beginning and 115.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 814.68 ms. Allocated memory is still 155.2 MB. Free memory was 115.5 MB in the beginning and 120.7 MB in the end (delta: -5.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1174.78 ms. Allocated memory is still 155.2 MB. Free memory was 120.2 MB in the beginning and 55.2 MB in the end (delta: 65.0 MB). Peak memory consumption was 65.0 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 bitwiseXor at line 33, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=4294967308, \old(Zero_fmod)=4294967300, \old(Zero_fmod)=4294967306, one_fmod=1, Zero_fmod={9:0}] [L128] float x = 0.0f; [L129] float y = __VERIFIER_nondet_float(); [L131] COND TRUE (y < 0.0f || y > 0.0f) VAL [one_fmod=1, x=0, y=4294967307, Zero_fmod={9:0}] [L133] CALL, EXPR fmod_float(x, y) VAL [\old(x)=0, \old(y)=4294967307, one_fmod=1, Zero_fmod={9:0}] [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=0, \old(y)=4294967307, one_fmod=1, x=0, y=4294967307, Zero_fmod={9:0}] [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)=0, \old(y)=4294967307, one_fmod=1, sx=-1, x=0, y=4294967307, Zero_fmod={9:0}] [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=4294967307, hx=2139095040, hy=0, one_fmod=1, sx=-1, x=0, y=4294967307, Zero_fmod={9:0}] [L133] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=4294967296, one_fmod=1, x=0, y=4294967307, Zero_fmod={9:0}] [L133] float res = fmod_float(x, y); [L136] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [one_fmod=1, res=4294967296, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=4294967307, Zero_fmod={9:0}] [L136] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L137] reach_error() VAL [one_fmod=1, res=4294967296, x=0, y=4294967307, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 75 SDtfs, 14 SDslu, 61 SDs, 0 SdLazy, 80 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1242 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...