/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:12:50,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:12:50,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:12:50,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 13:12:50,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:12:50,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:12:50,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:12:50,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:12:50,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:12:50,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:12:50,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:12:50,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:12:50,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:12:50,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:12:50,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:12:50,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:12:50,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:12:50,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:12:50,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:12:50,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:12:50,339 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-23 13:12:50,394 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:12:50,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:12:50,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:12:50,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:12:50,400 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:12:50,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:12:50,400 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:12:50,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:12:50,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:12:50,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:12:50,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:12:50,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:12:50,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:12:50,403 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:12:50,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:12:50,403 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:12:50,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:12:50,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:12:50,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:12:50,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:12:50,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:12:50,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:12:50,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:12:50,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:12:50,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:12:50,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:12:50,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:12:50,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:12:50,406 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:12:50,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:12:50,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:12:50,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:12:50,922 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:12:50,923 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:12:50,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c [2021-02-23 13:12:51,017 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26f905332/d7dc9f75069b466caf079b6406c4b719/FLAG72ab3ee0c [2021-02-23 13:12:51,616 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:12:51,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c [2021-02-23 13:12:51,628 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26f905332/d7dc9f75069b466caf079b6406c4b719/FLAG72ab3ee0c [2021-02-23 13:12:51,995 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26f905332/d7dc9f75069b466caf079b6406c4b719 [2021-02-23 13:12:51,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:12:52,013 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:12:52,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:12:52,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:12:52,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:12:52,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:12:51" (1/1) ... [2021-02-23 13:12:52,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4301264e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:52, skipping insertion in model container [2021-02-23 13:12:52,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:12:51" (1/1) ... [2021-02-23 13:12:52,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:12:52,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:12:52,286 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c[1765,1778] [2021-02-23 13:12:52,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:12:52,299 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:12:52,326 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c[1765,1778] [2021-02-23 13:12:52,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:12:52,345 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:12:52,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:52 WrapperNode [2021-02-23 13:12:52,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:12:52,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:12:52,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:12:52,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:12:52,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:52" (1/1) ... [2021-02-23 13:12:52,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:52" (1/1) ... [2021-02-23 13:12:52,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:52" (1/1) ... [2021-02-23 13:12:52,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:52" (1/1) ... [2021-02-23 13:12:52,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:52" (1/1) ... [2021-02-23 13:12:52,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:52" (1/1) ... [2021-02-23 13:12:52,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:52" (1/1) ... [2021-02-23 13:12:52,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:12:52,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:12:52,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:12:52,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:12:52,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:12:52,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:12:52,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:12:52,497 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:12:52,497 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-23 13:12:52,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-02-23 13:12:52,498 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2021-02-23 13:12:52,498 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:12:52,498 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:12:52,498 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:12:52,499 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:12:52,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:12:52,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-23 13:12:52,499 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-23 13:12:52,499 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-02-23 13:12:52,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 13:12:52,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:12:52,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:12:52,500 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2021-02-23 13:12:52,500 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:12:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:12:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:12:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:12:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 13:12:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:12:52,990 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:12:52,991 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-23 13:12:52,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:12:52 BoogieIcfgContainer [2021-02-23 13:12:52,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:12:52,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:12:52,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:12:52,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:12:52,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:12:51" (1/3) ... [2021-02-23 13:12:52,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2863996f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:12:52, skipping insertion in model container [2021-02-23 13:12:53,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:52" (2/3) ... [2021-02-23 13:12:53,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2863996f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:12:53, skipping insertion in model container [2021-02-23 13:12:53,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:12:52" (3/3) ... [2021-02-23 13:12:53,002 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b.c [2021-02-23 13:12:53,009 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:12:53,017 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:12:53,035 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:12:53,061 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:12:53,062 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:12:53,062 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:12:53,062 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:12:53,062 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:12:53,062 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:12:53,063 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:12:53,063 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:12:53,080 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2021-02-23 13:12:53,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-23 13:12:53,087 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:12:53,088 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] [2021-02-23 13:12:53,088 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:12:53,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:12:53,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1624734879, now seen corresponding path program 1 times [2021-02-23 13:12:53,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:12:53,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053802552] [2021-02-23 13:12:53,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:12:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:53,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:53,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:53,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:53,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:53,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:12:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:53,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:53,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:53,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:12:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:53,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:53,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:53,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-23 13:12:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:53,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:53,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:53,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:53,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:53,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 13:12:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:53,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:53,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:53,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:53,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:53,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:12:53,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053802552] [2021-02-23 13:12:53,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:12:53,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 13:12:53,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596211706] [2021-02-23 13:12:53,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 13:12:53,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:12:53,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 13:12:53,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 13:12:53,502 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2021-02-23 13:12:53,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:12:53,677 INFO L93 Difference]: Finished difference Result 72 states and 94 transitions. [2021-02-23 13:12:53,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:12:53,679 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2021-02-23 13:12:53,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:12:53,689 INFO L225 Difference]: With dead ends: 72 [2021-02-23 13:12:53,689 INFO L226 Difference]: Without dead ends: 37 [2021-02-23 13:12:53,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:12:53,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-02-23 13:12:53,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-02-23 13:12:53,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-02-23 13:12:53,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2021-02-23 13:12:53,752 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 27 [2021-02-23 13:12:53,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:12:53,753 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2021-02-23 13:12:53,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 13:12:53,753 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2021-02-23 13:12:53,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-23 13:12:53,755 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:12:53,755 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] [2021-02-23 13:12:53,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:12:53,756 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:12:53,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:12:53,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1818564187, now seen corresponding path program 1 times [2021-02-23 13:12:53,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:12:53,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139775403] [2021-02-23 13:12:53,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:12:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:53,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:53,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:53,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:53,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:53,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:12:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:53,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:53,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:53,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:12:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:53,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:53,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:53,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-23 13:12:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:54,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:54,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:12:54,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:54,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 13:12:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:54,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:54,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:12:54,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:12:54,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139775403] [2021-02-23 13:12:54,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:12:54,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 13:12:54,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589584952] [2021-02-23 13:12:54,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 13:12:54,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:12:54,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 13:12:54,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:12:54,114 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 6 states. [2021-02-23 13:12:54,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:12:54,358 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2021-02-23 13:12:54,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 13:12:54,359 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2021-02-23 13:12:54,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:12:54,362 INFO L225 Difference]: With dead ends: 47 [2021-02-23 13:12:54,363 INFO L226 Difference]: Without dead ends: 41 [2021-02-23 13:12:54,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 13:12:54,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-02-23 13:12:54,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-02-23 13:12:54,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-02-23 13:12:54,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2021-02-23 13:12:54,378 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2021-02-23 13:12:54,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:12:54,379 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2021-02-23 13:12:54,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 13:12:54,379 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2021-02-23 13:12:54,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-23 13:12:54,381 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:12:54,381 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, 1, 1, 1] [2021-02-23 13:12:54,381 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:12:54,381 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:12:54,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:12:54,382 INFO L82 PathProgramCache]: Analyzing trace with hash -841214374, now seen corresponding path program 1 times [2021-02-23 13:12:54,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:12:54,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708635851] [2021-02-23 13:12:54,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:12:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:54,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:54,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:54,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:12:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:54,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:54,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:12:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:54,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:54,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-23 13:12:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:54,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:54,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:12:54,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:54,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 13:12:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:54,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:54,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:54,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:12:54,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:12:54,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708635851] [2021-02-23 13:12:54,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:12:54,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 13:12:54,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177860049] [2021-02-23 13:12:54,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 13:12:54,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:12:54,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 13:12:54,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:12:54,530 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2021-02-23 13:12:54,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:12:54,692 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2021-02-23 13:12:54,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 13:12:54,692 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2021-02-23 13:12:54,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:12:54,694 INFO L225 Difference]: With dead ends: 51 [2021-02-23 13:12:54,694 INFO L226 Difference]: Without dead ends: 45 [2021-02-23 13:12:54,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 13:12:54,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-02-23 13:12:54,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2021-02-23 13:12:54,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-02-23 13:12:54,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2021-02-23 13:12:54,706 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 31 [2021-02-23 13:12:54,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:12:54,706 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2021-02-23 13:12:54,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 13:12:54,706 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2021-02-23 13:12:54,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-23 13:12:54,708 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:12:54,708 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, 1, 1, 1] [2021-02-23 13:12:54,708 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 13:12:54,708 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:12:54,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:12:54,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1037727879, now seen corresponding path program 1 times [2021-02-23 13:12:54,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:12:54,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748523730] [2021-02-23 13:12:54,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:12:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:12:54,739 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:12:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:12:54,759 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:12:54,796 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:12:54,796 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:12:54,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 13:12:54,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:12:54 BoogieIcfgContainer [2021-02-23 13:12:54,833 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:12:54,835 INFO L168 Benchmark]: Toolchain (without parser) took 2833.27 ms. Allocated memory was 152.0 MB in the beginning and 201.3 MB in the end (delta: 49.3 MB). Free memory was 126.3 MB in the beginning and 123.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 52.8 MB. Max. memory is 8.0 GB. [2021-02-23 13:12:54,835 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 152.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:12:54,836 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.09 ms. Allocated memory is still 152.0 MB. Free memory was 125.1 MB in the beginning and 114.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:12:54,837 INFO L168 Benchmark]: Boogie Preprocessor took 45.40 ms. Allocated memory is still 152.0 MB. Free memory was 114.8 MB in the beginning and 113.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:12:54,838 INFO L168 Benchmark]: RCFGBuilder took 599.06 ms. Allocated memory is still 152.0 MB. Free memory was 113.1 MB in the beginning and 128.4 MB in the end (delta: -15.3 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:12:54,838 INFO L168 Benchmark]: TraceAbstraction took 1838.49 ms. Allocated memory was 152.0 MB in the beginning and 201.3 MB in the end (delta: 49.3 MB). Free memory was 127.9 MB in the beginning and 123.1 MB in the end (delta: 4.8 MB). Peak memory consumption was 54.6 MB. Max. memory is 8.0 GB. [2021-02-23 13:12:54,842 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 152.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 329.09 ms. Allocated memory is still 152.0 MB. Free memory was 125.1 MB in the beginning and 114.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.40 ms. Allocated memory is still 152.0 MB. Free memory was 114.8 MB in the beginning and 113.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 599.06 ms. Allocated memory is still 152.0 MB. Free memory was 113.1 MB in the beginning and 128.4 MB in the end (delta: -15.3 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1838.49 ms. Allocated memory was 152.0 MB in the beginning and 201.3 MB in the end (delta: 49.3 MB). Free memory was 127.9 MB in the beginning and 123.1 MB in the end (delta: 4.8 MB). Peak memory consumption was 54.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 69, overapproximation of someBinaryArithmeticDOUBLEoperation at line 63. Possible FailurePath: [L62] double x = __VERIFIER_nondet_double(); [L63] double y = 0.0 / 0.0; VAL [x=4294967302] [L64] CALL, EXPR isnan_double(x) VAL [\old(x)=4294967302] [L18] return x != x; VAL [\old(x)=4294967302, \result=0, x=4294967302] [L64] RET, EXPR isnan_double(x) VAL [isnan_double(x)=0, x=4294967302] [L64] COND TRUE !isnan_double(x) [L66] CALL, EXPR fmin_double(x, y) VAL [\old(x)=4294967302, \old(y)=4294967301] [L47] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967302] [L20] __uint32_t msw, lsw; VAL [\old(x)=4294967302, x=4294967302] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L29-L30] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L32-L33] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L35-L36] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L39-L40] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L43] return 0; VAL [\old(x)=4294967302, \result=0, lsw=4294967297, msw=4293918721, x=4294967302] [L47] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4294967302, \old(y)=4294967301, __fpclassify_double(x)=0, x=4294967302, y=4294967301] [L47] COND TRUE __fpclassify_double(x) == 0 [L48] return y; VAL [\old(x)=4294967302, \old(y)=4294967301, \result=4294967301, x=4294967302, y=4294967301] [L66] RET, EXPR fmin_double(x, y) VAL [fmin_double(x, y)=4294967301, x=4294967302, y=4294967301] [L66] double res = fmin_double(x, y); [L69] COND TRUE res != x VAL [res=4294967301, x=4294967302, y=4294967301] [L70] reach_error() VAL [res=4294967301, x=4294967302, y=4294967301] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 125 SDtfs, 48 SDslu, 201 SDs, 0 SdLazy, 171 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 7243 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...