/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 06:07:19,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 06:07:19,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 06:07:19,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 06:07:19,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 06:07:19,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 06:07:19,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 06:07:19,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 06:07:19,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 06:07:19,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 06:07:19,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 06:07:19,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 06:07:19,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 06:07:19,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 06:07:19,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 06:07:19,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 06:07:19,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 06:07:19,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 06:07:19,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 06:07:19,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 06:07:19,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 06:07:19,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 06:07:19,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 06:07:19,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 06:07:19,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-06 06:07:19,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-06 06:07:19,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-06 06:07:19,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-06 06:07:19,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-06 06:07:19,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-06 06:07:19,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-06 06:07:19,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-06 06:07:19,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-06 06:07:19,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-06 06:07:19,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-06 06:07:19,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-06 06:07:19,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-06 06:07:19,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-06 06:07:19,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 06:07:19,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 06:07:19,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 06:07:19,997 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 06:07:20,011 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 06:07:20,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 06:07:20,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 06:07:20,014 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 06:07:20,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 06:07:20,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 06:07:20,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 06:07:20,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 06:07:20,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 06:07:20,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 06:07:20,015 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 06:07:20,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 06:07:20,016 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 06:07:20,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 06:07:20,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 06:07:20,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 06:07:20,016 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 06:07:20,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 06:07:20,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:07:20,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 06:07:20,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 06:07:20,018 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 06:07:20,018 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 06:07:20,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 06:07:20,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 06:07:20,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 06:07:20,310 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 06:07:20,311 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 06:07:20,311 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+nlh-reducer.c [2021-05-06 06:07:20,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fc3c81f8/35bfad5cf5de449fa49718f14d9953a2/FLAGeb4446d9d [2021-05-06 06:07:20,773 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 06:07:20,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+nlh-reducer.c [2021-05-06 06:07:20,797 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fc3c81f8/35bfad5cf5de449fa49718f14d9953a2/FLAGeb4446d9d [2021-05-06 06:07:21,148 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fc3c81f8/35bfad5cf5de449fa49718f14d9953a2 [2021-05-06 06:07:21,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 06:07:21,151 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 06:07:21,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 06:07:21,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 06:07:21,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 06:07:21,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:07:21" (1/1) ... [2021-05-06 06:07:21,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e587408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:07:21, skipping insertion in model container [2021-05-06 06:07:21,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:07:21" (1/1) ... [2021-05-06 06:07:21,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 06:07:21,222 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 06:07:21,514 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/aiob_4.c.v+nlh-reducer.c[38357,38370] [2021-05-06 06:07:21,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:07:21,540 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 06:07:21,639 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/aiob_4.c.v+nlh-reducer.c[38357,38370] [2021-05-06 06:07:21,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:07:21,676 INFO L208 MainTranslator]: Completed translation [2021-05-06 06:07:21,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:07:21 WrapperNode [2021-05-06 06:07:21,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 06:07:21,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 06:07:21,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 06:07:21,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 06:07:21,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:07:21" (1/1) ... [2021-05-06 06:07:21,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:07:21" (1/1) ... [2021-05-06 06:07:21,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:07:21" (1/1) ... [2021-05-06 06:07:21,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:07:21" (1/1) ... [2021-05-06 06:07:21,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:07:21" (1/1) ... [2021-05-06 06:07:21,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:07:21" (1/1) ... [2021-05-06 06:07:21,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:07:21" (1/1) ... [2021-05-06 06:07:21,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 06:07:21,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 06:07:21,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 06:07:21,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 06:07:21,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:07:21" (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 06:07:21,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 06:07:21,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 06:07:21,929 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 06:07:21,929 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 06:07:21,929 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 06:07:21,929 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 06:07:21,929 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 06:07:21,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 06:07:21,930 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2021-05-06 06:07:21,930 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-05-06 06:07:21,930 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 06:07:21,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 06:07:21,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 06:07:21,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-05-06 06:07:21,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 06:07:21,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 06:07:21,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 06:07:21,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 06:07:21,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-05-06 06:07:21,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 06:07:23,398 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 06:07:23,398 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-06 06:07:23,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:07:23 BoogieIcfgContainer [2021-05-06 06:07:23,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 06:07:23,400 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 06:07:23,400 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 06:07:23,400 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 06:07:23,402 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:07:23" (1/1) ... [2021-05-06 06:07:23,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:07:23 BasicIcfg [2021-05-06 06:07:23,420 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 06:07:23,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 06:07:23,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 06:07:23,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 06:07:23,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 06:07:21" (1/4) ... [2021-05-06 06:07:23,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c411c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:07:23, skipping insertion in model container [2021-05-06 06:07:23,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:07:21" (2/4) ... [2021-05-06 06:07:23,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c411c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:07:23, skipping insertion in model container [2021-05-06 06:07:23,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:07:23" (3/4) ... [2021-05-06 06:07:23,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c411c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:07:23, skipping insertion in model container [2021-05-06 06:07:23,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:07:23" (4/4) ... [2021-05-06 06:07:23,425 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+nlh-reducer.cJordan [2021-05-06 06:07:23,429 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 06:07:23,432 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 06:07:23,444 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 06:07:23,457 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 06:07:23,457 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 06:07:23,457 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 06:07:23,457 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 06:07:23,457 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 06:07:23,457 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 06:07:23,457 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 06:07:23,457 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 06:07:23,469 INFO L276 IsEmpty]: Start isEmpty. Operand has 184 states, 178 states have (on average 1.9719101123595506) internal successors, (351), 179 states have internal predecessors, (351), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 06:07:23,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-05-06 06:07:23,479 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:07:23,480 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, 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, 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, 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, 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 06:07:23,480 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:07:23,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:07:23,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1211810567, now seen corresponding path program 1 times [2021-05-06 06:07:23,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:07:23,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954194947] [2021-05-06 06:07:23,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:07:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:07:28,266 WARN L205 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2021-05-06 06:07:28,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:07:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:07:28,304 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 06:07:28,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:07:28,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954194947] [2021-05-06 06:07:28,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954194947] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:07:28,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:07:28,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2021-05-06 06:07:28,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565797733] [2021-05-06 06:07:28,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-06 06:07:28,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:07:28,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-06 06:07:28,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=4401, Unknown=0, NotChecked=0, Total=4556 [2021-05-06 06:07:28,322 INFO L87 Difference]: Start difference. First operand has 184 states, 178 states have (on average 1.9719101123595506) internal successors, (351), 179 states have internal predecessors, (351), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 68 states, 68 states have (on average 2.588235294117647) internal successors, (176), 67 states have internal predecessors, (176), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:07:44,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:07:44,853 INFO L93 Difference]: Finished difference Result 179 states and 282 transitions. [2021-05-06 06:07:44,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-06 06:07:44,855 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.588235294117647) internal successors, (176), 67 states have internal predecessors, (176), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 179 [2021-05-06 06:07:44,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:07:44,859 INFO L225 Difference]: With dead ends: 179 [2021-05-06 06:07:44,859 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 06:07:44,861 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 3166.7ms TimeCoverageRelationStatistics Valid=160, Invalid=4532, Unknown=0, NotChecked=0, Total=4692 [2021-05-06 06:07:44,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 06:07:44,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 06:07:44,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-06 06:07:44,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 06:07:44,876 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 179 [2021-05-06 06:07:44,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:07:44,877 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 06:07:44,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 68 states, 68 states have (on average 2.588235294117647) internal successors, (176), 67 states have internal predecessors, (176), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:07:44,877 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 06:07:44,877 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 06:07:44,877 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 06:07:44,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:07:44 BasicIcfg [2021-05-06 06:07:44,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 06:07:44,881 INFO L168 Benchmark]: Toolchain (without parser) took 23729.99 ms. Allocated memory was 204.5 MB in the beginning and 464.5 MB in the end (delta: 260.0 MB). Free memory was 166.7 MB in the beginning and 355.8 MB in the end (delta: -189.1 MB). Peak memory consumption was 71.3 MB. Max. memory is 8.0 GB. [2021-05-06 06:07:44,881 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 204.5 MB. Free memory is still 184.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 06:07:44,881 INFO L168 Benchmark]: CACSL2BoogieTranslator took 521.87 ms. Allocated memory is still 204.5 MB. Free memory was 166.5 MB in the beginning and 166.7 MB in the end (delta: -171.0 kB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. [2021-05-06 06:07:44,882 INFO L168 Benchmark]: Boogie Preprocessor took 116.91 ms. Allocated memory is still 204.5 MB. Free memory was 166.7 MB in the beginning and 155.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-05-06 06:07:44,882 INFO L168 Benchmark]: RCFGBuilder took 1604.43 ms. Allocated memory was 204.5 MB in the beginning and 254.8 MB in the end (delta: 50.3 MB). Free memory was 155.1 MB in the beginning and 132.0 MB in the end (delta: 23.2 MB). Peak memory consumption was 76.5 MB. Max. memory is 8.0 GB. [2021-05-06 06:07:44,882 INFO L168 Benchmark]: IcfgTransformer took 20.94 ms. Allocated memory is still 254.8 MB. Free memory was 132.0 MB in the beginning and 128.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-05-06 06:07:44,883 INFO L168 Benchmark]: TraceAbstraction took 21458.87 ms. Allocated memory was 254.8 MB in the beginning and 464.5 MB in the end (delta: 209.7 MB). Free memory was 127.8 MB in the beginning and 355.8 MB in the end (delta: -228.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 06:07:44,884 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 204.5 MB. Free memory is still 184.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 521.87 ms. Allocated memory is still 204.5 MB. Free memory was 166.5 MB in the beginning and 166.7 MB in the end (delta: -171.0 kB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 116.91 ms. Allocated memory is still 204.5 MB. Free memory was 166.7 MB in the beginning and 155.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1604.43 ms. Allocated memory was 204.5 MB in the beginning and 254.8 MB in the end (delta: 50.3 MB). Free memory was 155.1 MB in the beginning and 132.0 MB in the end (delta: 23.2 MB). Peak memory consumption was 76.5 MB. Max. memory is 8.0 GB. * IcfgTransformer took 20.94 ms. Allocated memory is still 254.8 MB. Free memory was 132.0 MB in the beginning and 128.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21458.87 ms. Allocated memory was 254.8 MB in the beginning and 464.5 MB in the end (delta: 209.7 MB). Free memory was 127.8 MB in the beginning and 355.8 MB in the end (delta: -228.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1287]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 184 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 21422.6ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 13.4ms, AutomataDifference: 16549.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 71 SDtfs, 66 SDslu, 4011 SDs, 0 SdLazy, 14553 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13851.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 3166.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=0, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 6.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 21.7ms SsaConstructionTime, 1268.8ms SatisfiabilityAnalysisTime, 3482.3ms InterpolantComputationTime, 179 NumberOfCodeBlocks, 179 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 178 ConstructedInterpolants, 0 QuantifiedInterpolants, 3251 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...