/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 23:49:42,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 23:49:42,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 23:49:42,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 23:49:42,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 23:49:42,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 23:49:42,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 23:49:42,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 23:49:42,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 23:49:42,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 23:49:42,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 23:49:42,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 23:49:42,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 23:49:42,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 23:49:42,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 23:49:42,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 23:49:42,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 23:49:42,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 23:49:42,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 23:49:42,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 23:49:42,480 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-02 23:49:42,495 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 23:49:42,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 23:49:42,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 23:49:42,500 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 23:49:42,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 23:49:42,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 23:49:42,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 23:49:42,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 23:49:42,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 23:49:42,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 23:49:42,501 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 23:49:42,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 23:49:42,501 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 23:49:42,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 23:49:42,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 23:49:42,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 23:49:42,502 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 23:49:42,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 23:49:42,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 23:49:42,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 23:49:42,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-02 23:49:42,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 23:49:42,503 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-02 23:49:42,503 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 23:49:42,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 23:49:42,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 23:49:42,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 23:49:42,861 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 23:49:42,862 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 23:49:42,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_3.c [2021-05-02 23:49:42,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56aebb5d7/677c29dae15343aba6ae1fb88dbc822e/FLAG52a81835d [2021-05-02 23:49:43,404 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 23:49:43,405 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_3.c [2021-05-02 23:49:43,412 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56aebb5d7/677c29dae15343aba6ae1fb88dbc822e/FLAG52a81835d [2021-05-02 23:49:43,898 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56aebb5d7/677c29dae15343aba6ae1fb88dbc822e [2021-05-02 23:49:43,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 23:49:43,902 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 23:49:43,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 23:49:43,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 23:49:43,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 23:49:43,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:49:43" (1/1) ... [2021-05-02 23:49:43,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a095539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:49:43, skipping insertion in model container [2021-05-02 23:49:43,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:49:43" (1/1) ... [2021-05-02 23:49:43,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 23:49:43,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 23:49:44,221 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_3.c[11322,11335] [2021-05-02 23:49:44,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:49:44,242 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 23:49:44,297 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_3.c[11322,11335] [2021-05-02 23:49:44,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:49:44,318 INFO L208 MainTranslator]: Completed translation [2021-05-02 23:49:44,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:49:44 WrapperNode [2021-05-02 23:49:44,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 23:49:44,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 23:49:44,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 23:49:44,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 23:49:44,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:49:44" (1/1) ... [2021-05-02 23:49:44,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:49:44" (1/1) ... [2021-05-02 23:49:44,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:49:44" (1/1) ... [2021-05-02 23:49:44,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:49:44" (1/1) ... [2021-05-02 23:49:44,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:49:44" (1/1) ... [2021-05-02 23:49:44,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:49:44" (1/1) ... [2021-05-02 23:49:44,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:49:44" (1/1) ... [2021-05-02 23:49:44,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 23:49:44,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 23:49:44,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 23:49:44,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 23:49:44,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:49:44" (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 [2021-05-02 23:49:44,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 23:49:44,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 23:49:44,488 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 23:49:44,488 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 23:49:44,488 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2021-05-02 23:49:44,489 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2021-05-02 23:49:44,489 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2021-05-02 23:49:44,489 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2021-05-02 23:49:44,489 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2021-05-02 23:49:44,490 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2021-05-02 23:49:44,490 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2021-05-02 23:49:44,490 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2021-05-02 23:49:44,490 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 23:49:44,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 23:49:44,490 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 23:49:44,491 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 23:49:44,491 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 23:49:44,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 23:49:44,491 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 23:49:44,493 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2021-05-02 23:49:44,493 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-05-02 23:49:44,493 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2021-05-02 23:49:44,493 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2021-05-02 23:49:44,494 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2021-05-02 23:49:44,494 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2021-05-02 23:49:44,494 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2021-05-02 23:49:44,494 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-05-02 23:49:44,494 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2021-05-02 23:49:44,494 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2021-05-02 23:49:44,494 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-05-02 23:49:44,494 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 23:49:44,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 23:49:44,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-05-02 23:49:44,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 23:49:44,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 23:49:44,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 23:49:44,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 23:49:44,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-05-02 23:49:44,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-05-02 23:49:44,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 23:49:44,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-05-02 23:49:44,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 23:49:45,274 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 23:49:45,274 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-05-02 23:49:45,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:49:45 BoogieIcfgContainer [2021-05-02 23:49:45,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 23:49:45,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 23:49:45,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 23:49:45,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 23:49:45,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 11:49:43" (1/3) ... [2021-05-02 23:49:45,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1312e121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:49:45, skipping insertion in model container [2021-05-02 23:49:45,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:49:44" (2/3) ... [2021-05-02 23:49:45,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1312e121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:49:45, skipping insertion in model container [2021-05-02 23:49:45,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:49:45" (3/3) ... [2021-05-02 23:49:45,287 INFO L111 eAbstractionObserver]: Analyzing ICFG ofuf_3.c [2021-05-02 23:49:45,292 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-02 23:49:45,298 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 23:49:45,316 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 23:49:45,357 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 23:49:45,358 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 23:49:45,358 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-02 23:49:45,358 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 23:49:45,358 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 23:49:45,358 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 23:49:45,358 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 23:49:45,358 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 23:49:45,378 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 99 states have (on average 1.5353535353535352) internal successors, (152), 101 states have internal predecessors, (152), 16 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-02 23:49:45,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-02 23:49:45,394 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:49:45,395 INFO L523 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:49:45,395 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:49:45,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:49:45,401 INFO L82 PathProgramCache]: Analyzing trace with hash -540283313, now seen corresponding path program 1 times [2021-05-02 23:49:45,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:49:45,412 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832150166] [2021-05-02 23:49:45,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:49:45,469 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:49:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:49:45,871 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-05-02 23:49:45,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:49:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:49:45,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-02 23:49:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:49:45,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-05-02 23:49:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:49:45,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:49:45,993 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:49:45,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832150166] [2021-05-02 23:49:45,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [832150166] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:49:45,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:49:45,996 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 23:49:45,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434358591] [2021-05-02 23:49:45,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 23:49:46,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:49:46,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 23:49:46,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 23:49:46,012 INFO L87 Difference]: Start difference. First operand has 128 states, 99 states have (on average 1.5353535353535352) internal successors, (152), 101 states have internal predecessors, (152), 16 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-02 23:49:46,192 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-05-02 23:49:46,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:49:46,745 INFO L93 Difference]: Finished difference Result 243 states and 363 transitions. [2021-05-02 23:49:46,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 23:49:46,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2021-05-02 23:49:46,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:49:46,754 INFO L225 Difference]: With dead ends: 243 [2021-05-02 23:49:46,754 INFO L226 Difference]: Without dead ends: 119 [2021-05-02 23:49:46,758 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 341.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 23:49:46,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-02 23:49:46,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-05-02 23:49:46,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 94 states have (on average 1.4574468085106382) internal successors, (137), 95 states have internal predecessors, (137), 16 states have call successors, (16), 11 states have call predecessors, (16), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-02 23:49:46,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 165 transitions. [2021-05-02 23:49:46,819 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 165 transitions. Word has length 39 [2021-05-02 23:49:46,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:49:46,819 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 165 transitions. [2021-05-02 23:49:46,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-02 23:49:46,819 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 165 transitions. [2021-05-02 23:49:46,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-02 23:49:46,822 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:49:46,822 INFO L523 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:49:46,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 23:49:46,822 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:49:46,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:49:46,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1349629939, now seen corresponding path program 1 times [2021-05-02 23:49:46,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:49:46,823 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024907634] [2021-05-02 23:49:46,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:49:46,826 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:49:46,875 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-02 23:49:46,876 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-02 23:49:46,883 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 23:49:46,910 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-02 23:49:46,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 11:49:46 BoogieIcfgContainer [2021-05-02 23:49:46,911 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 23:49:46,914 INFO L168 Benchmark]: Toolchain (without parser) took 3010.09 ms. Allocated memory was 167.8 MB in the beginning and 219.2 MB in the end (delta: 51.4 MB). Free memory was 131.9 MB in the beginning and 76.6 MB in the end (delta: 55.3 MB). Peak memory consumption was 107.1 MB. Max. memory is 8.0 GB. [2021-05-02 23:49:46,915 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 167.8 MB. Free memory is still 149.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 23:49:46,916 INFO L168 Benchmark]: CACSL2BoogieTranslator took 415.41 ms. Allocated memory is still 167.8 MB. Free memory was 131.7 MB in the beginning and 142.8 MB in the end (delta: -11.2 MB). Peak memory consumption was 10.8 MB. Max. memory is 8.0 GB. [2021-05-02 23:49:46,916 INFO L168 Benchmark]: Boogie Preprocessor took 74.77 ms. Allocated memory is still 167.8 MB. Free memory was 142.8 MB in the beginning and 139.3 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-05-02 23:49:46,917 INFO L168 Benchmark]: RCFGBuilder took 882.34 ms. Allocated memory is still 167.8 MB. Free memory was 138.8 MB in the beginning and 77.4 MB in the end (delta: 61.3 MB). Peak memory consumption was 60.8 MB. Max. memory is 8.0 GB. [2021-05-02 23:49:46,918 INFO L168 Benchmark]: TraceAbstraction took 1630.65 ms. Allocated memory was 167.8 MB in the beginning and 219.2 MB in the end (delta: 51.4 MB). Free memory was 77.4 MB in the beginning and 76.6 MB in the end (delta: 874.3 kB). Peak memory consumption was 53.3 MB. Max. memory is 8.0 GB. [2021-05-02 23:49:46,925 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 167.8 MB. Free memory is still 149.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 415.41 ms. Allocated memory is still 167.8 MB. Free memory was 131.7 MB in the beginning and 142.8 MB in the end (delta: -11.2 MB). Peak memory consumption was 10.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 74.77 ms. Allocated memory is still 167.8 MB. Free memory was 142.8 MB in the beginning and 139.3 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 882.34 ms. Allocated memory is still 167.8 MB. Free memory was 138.8 MB in the beginning and 77.4 MB in the end (delta: 61.3 MB). Peak memory consumption was 60.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1630.65 ms. Allocated memory was 167.8 MB in the beginning and 219.2 MB in the end (delta: 51.4 MB). Free memory was 77.4 MB in the beginning and 76.6 MB in the end (delta: 874.3 kB). Peak memory consumption was 53.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 463]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L181] unsigned int Id_MCDC_104; [L182] UINT16 Id_MCDC_105; [L183] UINT16 Id_MCDC_106; [L184] Od_IndexTable* Id_MCDC_107; [L185] Od_IndexTable* Id_MCDC_108; [L186] Od_IndexTable* Id_MCDC_109; [L187] Od_IndexTable* Id_MCDC_110; [L188] Od_IndexTable* Id_MCDC_111; [L189] UINT32 Id_MCDC_112 [4]; [L190] CanOpenNode Id_MCDC_113; [L191] UINT32 Id_MCDC_114=0; [L429] void * Id_MCDC_143; [L430] void * Id_MCDC_144; [L431] void * Id_MCDC_145; [L432] void * Id_MCDC_146; [L433] void * Id_MCDC_147; [L434] void * Id_MCDC_148; [L435] int Id_MCDC_149; [L436] int Id_MCDC_150; [L437] int Id_MCDC_151; [L438] int Id_MCDC_152; [L439] int Id_MCDC_153; [L440] int Id_MCDC_154; [L441] int Id_MCDC_155; [L442] short Id_MCDC_156; [L443] short Id_MCDC_157; [L444] FILE* Id_MCDC_158; [L445] unsigned short Id_MCDC_159; [L446] unsigned short Id_MCDC_160; [L447] unsigned short Id_MCDC_161=0; [L448] unsigned short Id_MCDC_162=0; [L449] char Id_MCDC_163; [L450] char Id_MCDC_164; [L451] Id_MCDC_158 = fopen("in.eds", "r") [L452] COND FALSE !(Id_MCDC_158 == (( void * ) 0)) [L457] CALL Id_MCDC_100() [L422] int Id_MCDC_141; [L423] void * Id_MCDC_142; [L424] CALL Id_MCDC_99() [L402] CHAR Id_MCDC_139 [4]={0, 0, 0, 0}; [L403] UINT32 Id_MCDC_140=0; [L404] Id_MCDC_113.Id_MCDC_66 = ( PDO_Buffer* ) malloc(372) [L405] CALL Id_MCDC_97() [L333] UINT32 Id_MCDC_123; [L334] UINT32 Id_MCDC_124; [L335] UINT32 Id_MCDC_125; [L336] UINT32 Id_MCDC_126; [L337] UINT32 Id_MCDC_127; [L338] UINT32 Id_MCDC_128=0x00; [L339] UINT16 Id_MCDC_129; [L340] UINT32 Id_MCDC_130=0x00; [L341] UINT32 Id_MCDC_131=0x00; [L342] UINT8 Id_MCDC_35=0; [L343] UINT8 Id_MCDC_132=0; [L344] UINT8 Id_MCDC_36=0; [L345] UINT8 Id_MCDC_133=0; [L346] UINT8 Id_MCDC_134=0x00; [L347] INT32 Id_MCDC_135; [L348] void * Id_MCDC_136; [L349] UINT32* Id_MCDC_137; [L350] UINT16 Id_MCDC_138; [L351] Id_MCDC_123 = 0x1800 [L352] Id_MCDC_132 = 0 [L352] COND FALSE !(Id_MCDC_132 < 4) [L356] COND FALSE !(Id_MCDC_123 <= 0x1803) [L398] return 0x00; [L338] UINT32 Id_MCDC_128=0x00; [L398] return 0x00; [L340] UINT32 Id_MCDC_130=0x00; [L398] return 0x00; [L341] UINT32 Id_MCDC_131=0x00; [L398] return 0x00; [L398] return 0x00; [L398] return 0x00; [L405] RET Id_MCDC_97() [L406] Id_MCDC_140 = 0 [L406] COND FALSE !(Id_MCDC_140 < 4) [L417] CALL Id_MCDC_95(4, Id_MCDC_139) [L282] UINT32 Id_MCDC_121=0; [L283] UINT32 Id_MCDC_122=0; [L284] COND FALSE !(Id_MCDC_93 < 2) [L288] COND FALSE !(Id_MCDC_93 != 2) [L294] EXPR Id_MCDC_94[1] [L294] Id_MCDC_122 = Id_MCDC_94[1] [L296] EXPR Id_MCDC_94[0] [L296] CALL Id_MCDC_92(Id_MCDC_94[0], Id_MCDC_122) [L251] UINT32 Id_MCDC_117=0; [L252] UINT32 Id_MCDC_118=0; [L253] UINT32 Id_MCDC_119=1; [L254] UINT32 Id_MCDC_120=0; [L255] COND TRUE Id_MCDC_90 > Id_MCDC_91 [L257] Id_MCDC_117 = Id_MCDC_90 [L258] Id_MCDC_118 = Id_MCDC_91 [L270] COND TRUE Id_MCDC_119 != 0 [L272] CALL avoid_zero(Id_MCDC_118 != 0) [L11] COND FALSE !(!y) [L272] RET avoid_zero(Id_MCDC_118 != 0) [L273] Id_MCDC_120 = ( UINT32 ) (Id_MCDC_117 / Id_MCDC_118) [L274] CALL __VERIFIER_assert(( long long ) (Id_MCDC_120 * Id_MCDC_118) >= 0 && ( long long ) (Id_MCDC_120 * Id_MCDC_118) <= 4294967295) [L461] COND TRUE ! (Id_MCDC_103) [L463] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 14 procedures, 135 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 1543.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 25.7ms, AutomataDifference: 757.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 145 SDtfs, 204 SDslu, 29 SDs, 0 SdLazy, 107 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 330.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 341.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 48.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...