/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_2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 11:41:51,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 11:41:51,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 11:41:51,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 11:41:51,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 11:41:51,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 11:41:51,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 11:41:51,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 11:41:51,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 11:41:51,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 11:41:51,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 11:41:51,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 11:41:51,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 11:41:51,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 11:41:51,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 11:41:51,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 11:41:51,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 11:41:51,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 11:41:51,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 11:41:51,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 11:41:51,339 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-06 11:41:51,348 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 11:41:51,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 11:41:51,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 11:41:51,350 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 11:41:51,350 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 11:41:51,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 11:41:51,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 11:41:51,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 11:41:51,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 11:41:51,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 11:41:51,351 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 11:41:51,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 11:41:51,352 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 11:41:51,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 11:41:51,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 11:41:51,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 11:41:51,352 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 11:41:51,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 11:41:51,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 11:41:51,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 11:41:51,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-06 11:41:51,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 11:41:51,353 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-06 11:41:51,353 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 11:41:51,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 11:41:51,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 11:41:51,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 11:41:51,670 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 11:41:51,672 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 11:41:51,673 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c [2021-05-06 11:41:51,736 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da9f402f5/5c21730daa8342a6b5a966393e038327/FLAG081139dbf [2021-05-06 11:41:52,203 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 11:41:52,204 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c [2021-05-06 11:41:52,211 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da9f402f5/5c21730daa8342a6b5a966393e038327/FLAG081139dbf [2021-05-06 11:41:52,701 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da9f402f5/5c21730daa8342a6b5a966393e038327 [2021-05-06 11:41:52,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 11:41:52,705 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 11:41:52,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 11:41:52,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 11:41:52,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 11:41:52,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:41:52" (1/1) ... [2021-05-06 11:41:52,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e04f441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:41:52, skipping insertion in model container [2021-05-06 11:41:52,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:41:52" (1/1) ... [2021-05-06 11:41:52,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 11:41:52,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 11:41:53,019 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_2.c[11342,11355] [2021-05-06 11:41:53,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:41:53,069 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 11:41:53,144 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_2.c[11342,11355] [2021-05-06 11:41:53,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:41:53,159 INFO L208 MainTranslator]: Completed translation [2021-05-06 11:41:53,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:41:53 WrapperNode [2021-05-06 11:41:53,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 11:41:53,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 11:41:53,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 11:41:53,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 11:41:53,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:41:53" (1/1) ... [2021-05-06 11:41:53,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:41:53" (1/1) ... [2021-05-06 11:41:53,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:41:53" (1/1) ... [2021-05-06 11:41:53,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:41:53" (1/1) ... [2021-05-06 11:41:53,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:41:53" (1/1) ... [2021-05-06 11:41:53,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:41:53" (1/1) ... [2021-05-06 11:41:53,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:41:53" (1/1) ... [2021-05-06 11:41:53,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 11:41:53,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 11:41:53,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 11:41:53,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 11:41:53,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:41:53" (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 [2021-05-06 11:41:53,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 11:41:53,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 11:41:53,297 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 11:41:53,297 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 11:41:53,297 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2021-05-06 11:41:53,297 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2021-05-06 11:41:53,297 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2021-05-06 11:41:53,297 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2021-05-06 11:41:53,298 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2021-05-06 11:41:53,298 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2021-05-06 11:41:53,298 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2021-05-06 11:41:53,298 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2021-05-06 11:41:53,299 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 11:41:53,299 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 11:41:53,299 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 11:41:53,299 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 11:41:53,299 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 11:41:53,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 11:41:53,300 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 11:41:53,301 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2021-05-06 11:41:53,301 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-05-06 11:41:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2021-05-06 11:41:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2021-05-06 11:41:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2021-05-06 11:41:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2021-05-06 11:41:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2021-05-06 11:41:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-05-06 11:41:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2021-05-06 11:41:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2021-05-06 11:41:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-05-06 11:41:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 11:41:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 11:41:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-05-06 11:41:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 11:41:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 11:41:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 11:41:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 11:41:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-05-06 11:41:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-05-06 11:41:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 11:41:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-05-06 11:41:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 11:41:54,143 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 11:41:54,143 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-05-06 11:41:54,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:41:54 BoogieIcfgContainer [2021-05-06 11:41:54,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 11:41:54,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 11:41:54,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 11:41:54,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 11:41:54,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 11:41:52" (1/3) ... [2021-05-06 11:41:54,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227d6bda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:41:54, skipping insertion in model container [2021-05-06 11:41:54,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:41:53" (2/3) ... [2021-05-06 11:41:54,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227d6bda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:41:54, skipping insertion in model container [2021-05-06 11:41:54,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:41:54" (3/3) ... [2021-05-06 11:41:54,156 INFO L111 eAbstractionObserver]: Analyzing ICFG ofuf_2.c [2021-05-06 11:41:54,161 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-06 11:41:54,166 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 11:41:54,182 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 11:41:54,199 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 11:41:54,199 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 11:41:54,199 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-06 11:41:54,199 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 11:41:54,200 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 11:41:54,200 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 11:41:54,200 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 11:41:54,200 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 11:41:54,215 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) [2021-05-06 11:41:54,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-06 11:41:54,225 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:41:54,226 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] [2021-05-06 11:41:54,226 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:41:54,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:41:54,231 INFO L82 PathProgramCache]: Analyzing trace with hash -540283313, now seen corresponding path program 1 times [2021-05-06 11:41:54,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:41:54,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071606055] [2021-05-06 11:41:54,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:41:54,289 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:41:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:54,740 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-05-06 11:41:54,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:41:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:54,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-06 11:41:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:54,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-05-06 11:41:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:41:54,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:41:54,793 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:41:54,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071606055] [2021-05-06 11:41:54,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1071606055] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:41:54,795 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:41:54,795 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 11:41:54,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27947582] [2021-05-06 11:41:54,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 11:41:54,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:41:54,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 11:41:54,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 11:41:54,810 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) [2021-05-06 11:41:55,019 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-05-06 11:41:55,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:41:55,516 INFO L93 Difference]: Finished difference Result 243 states and 363 transitions. [2021-05-06 11:41:55,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 11:41:55,518 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 [2021-05-06 11:41:55,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:41:55,529 INFO L225 Difference]: With dead ends: 243 [2021-05-06 11:41:55,529 INFO L226 Difference]: Without dead ends: 119 [2021-05-06 11:41:55,537 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 376.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 11:41:55,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-06 11:41:55,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-05-06 11:41:55,605 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) [2021-05-06 11:41:55,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 165 transitions. [2021-05-06 11:41:55,608 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 165 transitions. Word has length 39 [2021-05-06 11:41:55,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:41:55,608 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 165 transitions. [2021-05-06 11:41:55,608 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) [2021-05-06 11:41:55,609 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 165 transitions. [2021-05-06 11:41:55,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-06 11:41:55,611 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:41:55,611 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] [2021-05-06 11:41:55,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 11:41:55,611 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:41:55,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:41:55,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1349629939, now seen corresponding path program 1 times [2021-05-06 11:41:55,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:41:55,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814750347] [2021-05-06 11:41:55,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:41:55,616 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:41:55,677 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-06 11:41:55,677 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-06 11:41:55,680 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 11:41:55,702 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-06 11:41:55,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 11:41:55 BoogieIcfgContainer [2021-05-06 11:41:55,702 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 11:41:55,703 INFO L168 Benchmark]: Toolchain (without parser) took 2998.30 ms. Allocated memory was 204.5 MB in the beginning and 256.9 MB in the end (delta: 52.4 MB). Free memory was 169.3 MB in the beginning and 197.5 MB in the end (delta: -28.2 MB). Peak memory consumption was 23.6 MB. Max. memory is 8.0 GB. [2021-05-06 11:41:55,704 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 204.5 MB. Free memory is still 187.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 11:41:55,704 INFO L168 Benchmark]: CACSL2BoogieTranslator took 452.67 ms. Allocated memory is still 204.5 MB. Free memory was 169.0 MB in the beginning and 182.5 MB in the end (delta: -13.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-06 11:41:55,705 INFO L168 Benchmark]: Boogie Preprocessor took 65.63 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 178.7 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-05-06 11:41:55,705 INFO L168 Benchmark]: RCFGBuilder took 917.39 ms. Allocated memory is still 204.5 MB. Free memory was 178.7 MB in the beginning and 172.1 MB in the end (delta: 6.6 MB). Peak memory consumption was 52.1 MB. Max. memory is 8.0 GB. [2021-05-06 11:41:55,706 INFO L168 Benchmark]: TraceAbstraction took 1556.81 ms. Allocated memory was 204.5 MB in the beginning and 256.9 MB in the end (delta: 52.4 MB). Free memory was 171.5 MB in the beginning and 197.5 MB in the end (delta: -25.9 MB). Peak memory consumption was 26.0 MB. Max. memory is 8.0 GB. [2021-05-06 11:41:55,709 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 204.5 MB. Free memory is still 187.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 452.67 ms. Allocated memory is still 204.5 MB. Free memory was 169.0 MB in the beginning and 182.5 MB in the end (delta: -13.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 65.63 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 178.7 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 917.39 ms. Allocated memory is still 204.5 MB. Free memory was 178.7 MB in the beginning and 172.1 MB in the end (delta: 6.6 MB). Peak memory consumption was 52.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1556.81 ms. Allocated memory was 204.5 MB in the beginning and 256.9 MB in the end (delta: 52.4 MB). Free memory was 171.5 MB in the beginning and 197.5 MB in the end (delta: -25.9 MB). Peak memory consumption was 26.0 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_117 - (Id_MCDC_120 * Id_MCDC_118)) >= 0 && ( long long ) (Id_MCDC_117 - (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: 1483.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 16.0ms, AutomataDifference: 738.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 145 SDtfs, 204 SDslu, 29 SDs, 0 SdLazy, 107 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 350.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 376.8ms 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: 59.5ms 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...