/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/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/loop-lit/gj2007b.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 20:17:17,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 20:17:17,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 20:17:17,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 20:17:17,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 20:17:17,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 20:17:17,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 20:17:17,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 20:17:17,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 20:17:17,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 20:17:17,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 20:17:17,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 20:17:17,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 20:17:17,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 20:17:17,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 20:17:17,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 20:17:17,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 20:17:17,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 20:17:17,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 20:17:17,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 20:17:17,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 20:17:17,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 20:17:17,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 20:17:17,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 20:17:17,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 20:17:17,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 20:17:17,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 20:17:17,990 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 20:17:17,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 20:17:17,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 20:17:17,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 20:17:17,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 20:17:17,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 20:17:17,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 20:17:17,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 20:17:17,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 20:17:17,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 20:17:17,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 20:17:17,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 20:17:17,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 20:17:17,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 20:17:17,998 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 20:17:18,033 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 20:17:18,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 20:17:18,034 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 20:17:18,034 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 20:17:18,035 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 20:17:18,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 20:17:18,035 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 20:17:18,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 20:17:18,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 20:17:18,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 20:17:18,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 20:17:18,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 20:17:18,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 20:17:18,036 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 20:17:18,036 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 20:17:18,036 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 20:17:18,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 20:17:18,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 20:17:18,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 20:17:18,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 20:17:18,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 20:17:18,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:17:18,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 20:17:18,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 20:17:18,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 20:17:18,037 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 20:17:18,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 20:17:18,037 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 20:17:18,037 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 20:17:18,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 20:17:18,038 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 20:17:18,038 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 20:17:18,038 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 20:17:18,038 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 20:17:18,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 20:17:18,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 20:17:18,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 20:17:18,283 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 20:17:18,283 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 20:17:18,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007b.i [2022-01-10 20:17:18,334 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b22565d02/83348f1b4b474843b27398c2effd9d00/FLAG3cdb9be6e [2022-01-10 20:17:18,646 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 20:17:18,647 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007b.i [2022-01-10 20:17:18,651 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b22565d02/83348f1b4b474843b27398c2effd9d00/FLAG3cdb9be6e [2022-01-10 20:17:18,661 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b22565d02/83348f1b4b474843b27398c2effd9d00 [2022-01-10 20:17:18,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 20:17:18,664 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 20:17:18,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 20:17:18,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 20:17:18,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 20:17:18,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:17:18" (1/1) ... [2022-01-10 20:17:18,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e1afe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:17:18, skipping insertion in model container [2022-01-10 20:17:18,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:17:18" (1/1) ... [2022-01-10 20:17:18,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 20:17:18,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 20:17:18,825 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007b.i[895,908] [2022-01-10 20:17:18,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:17:18,840 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 20:17:18,850 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007b.i[895,908] [2022-01-10 20:17:18,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:17:18,863 INFO L208 MainTranslator]: Completed translation [2022-01-10 20:17:18,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:17:18 WrapperNode [2022-01-10 20:17:18,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 20:17:18,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 20:17:18,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 20:17:18,865 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 20:17:18,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:17:18" (1/1) ... [2022-01-10 20:17:18,876 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:17:18" (1/1) ... [2022-01-10 20:17:18,889 INFO L137 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 38 [2022-01-10 20:17:18,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 20:17:18,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 20:17:18,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 20:17:18,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 20:17:18,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:17:18" (1/1) ... [2022-01-10 20:17:18,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:17:18" (1/1) ... [2022-01-10 20:17:18,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:17:18" (1/1) ... [2022-01-10 20:17:18,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:17:18" (1/1) ... [2022-01-10 20:17:18,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:17:18" (1/1) ... [2022-01-10 20:17:18,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:17:18" (1/1) ... [2022-01-10 20:17:18,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:17:18" (1/1) ... [2022-01-10 20:17:18,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 20:17:18,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 20:17:18,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 20:17:18,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 20:17:18,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:17:18" (1/1) ... [2022-01-10 20:17:18,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:17:18,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:17:18,930 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 20:17:18,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 20:17:18,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 20:17:18,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 20:17:18,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 20:17:18,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 20:17:19,006 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 20:17:19,007 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 20:17:19,103 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 20:17:19,108 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 20:17:19,109 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 20:17:19,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:17:19 BoogieIcfgContainer [2022-01-10 20:17:19,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 20:17:19,111 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 20:17:19,111 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 20:17:19,112 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 20:17:19,114 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:17:19" (1/1) ... [2022-01-10 20:17:19,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:17:19 BasicIcfg [2022-01-10 20:17:19,192 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 20:17:19,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 20:17:19,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 20:17:19,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 20:17:19,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:17:18" (1/4) ... [2022-01-10 20:17:19,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aac3264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:17:19, skipping insertion in model container [2022-01-10 20:17:19,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:17:18" (2/4) ... [2022-01-10 20:17:19,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aac3264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:17:19, skipping insertion in model container [2022-01-10 20:17:19,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:17:19" (3/4) ... [2022-01-10 20:17:19,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aac3264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:17:19, skipping insertion in model container [2022-01-10 20:17:19,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:17:19" (4/4) ... [2022-01-10 20:17:19,198 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007b.iTransformedIcfg [2022-01-10 20:17:19,205 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 20:17:19,205 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 20:17:19,257 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 20:17:19,263 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 20:17:19,267 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 20:17:19,280 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 14 states have (on average 1.5) internal successors, (21), 16 states have internal predecessors, (21), 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) [2022-01-10 20:17:19,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-10 20:17:19,285 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:17:19,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-10 20:17:19,286 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:17:19,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:17:19,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1986469560, now seen corresponding path program 1 times [2022-01-10 20:17:19,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:17:19,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979883409] [2022-01-10 20:17:19,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:17:19,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:17:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:17:19,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:17:19,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:17:19,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979883409] [2022-01-10 20:17:19,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979883409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:17:19,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:17:19,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:17:19,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099382669] [2022-01-10 20:17:19,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:17:19,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 20:17:19,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:17:19,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 20:17:19,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 20:17:19,510 INFO L87 Difference]: Start difference. First operand has 17 states, 14 states have (on average 1.5) internal successors, (21), 16 states have internal predecessors, (21), 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-01-10 20:17:19,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:17:19,521 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2022-01-10 20:17:19,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 20:17:19,522 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) Word has length 6 [2022-01-10 20:17:19,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:17:19,527 INFO L225 Difference]: With dead ends: 29 [2022-01-10 20:17:19,528 INFO L226 Difference]: Without dead ends: 13 [2022-01-10 20:17:19,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 20:17:19,532 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:17:19,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:17:19,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-01-10 20:17:19,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-01-10 20:17:19,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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) [2022-01-10 20:17:19,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-01-10 20:17:19,556 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 6 [2022-01-10 20:17:19,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:17:19,556 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-01-10 20:17:19,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-01-10 20:17:19,556 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-01-10 20:17:19,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-10 20:17:19,557 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:17:19,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-10 20:17:19,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 20:17:19,557 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:17:19,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:17:19,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1986439769, now seen corresponding path program 1 times [2022-01-10 20:17:19,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:17:19,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190318038] [2022-01-10 20:17:19,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:17:19,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:17:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:17:19,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:17:19,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:17:19,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190318038] [2022-01-10 20:17:19,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190318038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:17:19,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:17:19,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 20:17:19,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735212242] [2022-01-10 20:17:19,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:17:19,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:17:19,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:17:19,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:17:19,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:17:19,671 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-01-10 20:17:19,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:17:19,718 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-01-10 20:17:19,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 20:17:19,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) Word has length 6 [2022-01-10 20:17:19,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:17:19,719 INFO L225 Difference]: With dead ends: 24 [2022-01-10 20:17:19,719 INFO L226 Difference]: Without dead ends: 16 [2022-01-10 20:17:19,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:17:19,721 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:17:19,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 32 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:17:19,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-01-10 20:17:19,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-01-10 20:17:19,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 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) [2022-01-10 20:17:19,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-01-10 20:17:19,725 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 6 [2022-01-10 20:17:19,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:17:19,726 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-01-10 20:17:19,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-01-10 20:17:19,726 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-01-10 20:17:19,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 20:17:19,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:17:19,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:17:19,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 20:17:19,727 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:17:19,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:17:19,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1049959717, now seen corresponding path program 1 times [2022-01-10 20:17:19,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:17:19,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293051183] [2022-01-10 20:17:19,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:17:19,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:17:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:17:19,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:17:19,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:17:19,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293051183] [2022-01-10 20:17:19,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293051183] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 20:17:19,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037723227] [2022-01-10 20:17:19,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:17:19,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:17:19,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:17:19,843 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:17:19,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 20:17:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:17:19,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 20:17:19,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:17:20,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:17:20,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:17:20,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:17:20,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037723227] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:17:20,177 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 20:17:20,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-01-10 20:17:20,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662712823] [2022-01-10 20:17:20,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 20:17:20,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 20:17:20,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:17:20,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 20:17:20,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-10 20:17:20,179 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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) [2022-01-10 20:17:20,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:17:20,312 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2022-01-10 20:17:20,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 20:17:20,313 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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) Word has length 9 [2022-01-10 20:17:20,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:17:20,314 INFO L225 Difference]: With dead ends: 51 [2022-01-10 20:17:20,315 INFO L226 Difference]: Without dead ends: 39 [2022-01-10 20:17:20,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-01-10 20:17:20,316 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 26 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:17:20,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 43 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:17:20,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-10 20:17:20,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26. [2022-01-10 20:17:20,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 25 states have internal predecessors, (32), 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) [2022-01-10 20:17:20,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-01-10 20:17:20,323 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2022-01-10 20:17:20,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:17:20,323 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-01-10 20:17:20,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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) [2022-01-10 20:17:20,324 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-01-10 20:17:20,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 20:17:20,324 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:17:20,324 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:17:20,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 20:17:20,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:17:20,525 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:17:20,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:17:20,526 INFO L85 PathProgramCache]: Analyzing trace with hash 152612618, now seen corresponding path program 1 times [2022-01-10 20:17:20,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:17:20,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289430335] [2022-01-10 20:17:20,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:17:20,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:17:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:17:20,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 20:17:20,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:17:20,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289430335] [2022-01-10 20:17:20,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289430335] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:17:20,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:17:20,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 20:17:20,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878276371] [2022-01-10 20:17:20,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:17:20,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 20:17:20,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:17:20,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 20:17:20,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 20:17:20,670 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-01-10 20:17:20,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:17:20,751 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2022-01-10 20:17:20,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 20:17:20,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) Word has length 14 [2022-01-10 20:17:20,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:17:20,753 INFO L225 Difference]: With dead ends: 34 [2022-01-10 20:17:20,753 INFO L226 Difference]: Without dead ends: 28 [2022-01-10 20:17:20,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-10 20:17:20,761 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:17:20,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:17:20,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-01-10 20:17:20,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 17. [2022-01-10 20:17:20,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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) [2022-01-10 20:17:20,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-01-10 20:17:20,771 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 14 [2022-01-10 20:17:20,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:17:20,771 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-01-10 20:17:20,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-01-10 20:17:20,772 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-01-10 20:17:20,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 20:17:20,772 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:17:20,772 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2022-01-10 20:17:20,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 20:17:20,773 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:17:20,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:17:20,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1352773467, now seen corresponding path program 2 times [2022-01-10 20:17:20,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:17:20,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521066394] [2022-01-10 20:17:20,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:17:20,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:17:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:17:20,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:17:20,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:17:20,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521066394] [2022-01-10 20:17:20,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521066394] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 20:17:20,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6835323] [2022-01-10 20:17:20,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 20:17:20,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:17:20,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:17:20,902 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:17:20,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 20:17:20,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 20:17:20,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 20:17:20,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 20:17:20,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:17:21,137 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:17:21,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:17:21,441 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:17:21,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6835323] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:17:21,443 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 20:17:21,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-01-10 20:17:21,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072162926] [2022-01-10 20:17:21,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 20:17:21,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 20:17:21,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:17:21,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 20:17:21,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-01-10 20:17:21,452 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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) [2022-01-10 20:17:22,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:17:22,342 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2022-01-10 20:17:22,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 20:17:22,342 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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) Word has length 15 [2022-01-10 20:17:22,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:17:22,342 INFO L225 Difference]: With dead ends: 43 [2022-01-10 20:17:22,342 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 20:17:22,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2022-01-10 20:17:22,344 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 53 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 20:17:22,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 40 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 20:17:22,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 20:17:22,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 20:17:22,345 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) [2022-01-10 20:17:22,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 20:17:22,345 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2022-01-10 20:17:22,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:17:22,345 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 20:17:22,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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) [2022-01-10 20:17:22,345 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 20:17:22,345 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 20:17:22,347 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-01-10 20:17:22,348 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-01-10 20:17:22,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-10 20:17:22,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:17:22,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 20:17:22,769 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-01-10 20:17:22,770 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-01-10 20:17:22,770 INFO L854 garLoopResultBuilder]: At program point L28-2(lines 28 33) the Hoare annotation is: (let ((.cse0 (or (<= |ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int| (* 2 (mod |ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int| 2147483648))) (<= 4294967296 |ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int|)))) (or (and .cse0 (or (<= |ULTIMATE.start_ULTIMATE.start_main_~m~0#1Int| (* 2 (mod |ULTIMATE.start_ULTIMATE.start_main_~m~0#1Int| 2147483648))) (<= 4294967296 |ULTIMATE.start_ULTIMATE.start_main_~m~0#1Int|)) (<= (+ (* 4294967296 (div |ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| 2147483648)) |ULTIMATE.start_ULTIMATE.start_main_~m~0#1Int| 1) (+ (* (div |ULTIMATE.start_ULTIMATE.start_main_~m~0#1Int| 2147483648) 4294967296) |ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int|))) (and .cse0 (<= |ULTIMATE.start_ULTIMATE.start_main_~m~0#1Int| 0)))) [2022-01-10 20:17:22,770 INFO L858 garLoopResultBuilder]: For program point L28-3(lines 28 33) no Hoare annotation was computed. [2022-01-10 20:17:22,770 INFO L858 garLoopResultBuilder]: For program point L29(lines 29 31) no Hoare annotation was computed. [2022-01-10 20:17:22,770 INFO L858 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2022-01-10 20:17:22,770 INFO L858 garLoopResultBuilder]: For program point L29-2(lines 29 31) no Hoare annotation was computed. [2022-01-10 20:17:22,770 INFO L858 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2022-01-10 20:17:22,770 INFO L854 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_ULTIMATE.start___VERIFIER_assert_~cond#1Int|))) (or (and .cse0 (<= (+ (* 4294967296 (div |ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| 2147483648)) |ULTIMATE.start_ULTIMATE.start_main_~m~0#1Int| 1) (+ (* (div |ULTIMATE.start_ULTIMATE.start_main_~m~0#1Int| 2147483648) 4294967296) |ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int|))) (and .cse0 (<= |ULTIMATE.start_ULTIMATE.start_main_~m~0#1Int| 0)))) [2022-01-10 20:17:22,771 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-01-10 20:17:22,771 INFO L858 garLoopResultBuilder]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2022-01-10 20:17:22,771 INFO L858 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2022-01-10 20:17:22,771 INFO L861 garLoopResultBuilder]: At program point L18-5(lines 17 22) the Hoare annotation is: true [2022-01-10 20:17:22,771 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-01-10 20:17:22,771 INFO L861 garLoopResultBuilder]: At program point L36(lines 24 37) the Hoare annotation is: true [2022-01-10 20:17:22,771 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-01-10 20:17:22,771 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-01-10 20:17:22,774 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-01-10 20:17:22,775 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 20:17:22,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:17:22 BasicIcfg [2022-01-10 20:17:22,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 20:17:22,794 INFO L158 Benchmark]: Toolchain (without parser) took 4129.91ms. Allocated memory was 203.4MB in the beginning and 273.7MB in the end (delta: 70.3MB). Free memory was 146.8MB in the beginning and 151.0MB in the end (delta: -4.3MB). Peak memory consumption was 67.0MB. Max. memory is 8.0GB. [2022-01-10 20:17:22,794 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 203.4MB. Free memory is still 162.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 20:17:22,795 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.80ms. Allocated memory is still 203.4MB. Free memory was 146.6MB in the beginning and 172.9MB in the end (delta: -26.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-10 20:17:22,795 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.69ms. Allocated memory is still 203.4MB. Free memory was 172.9MB in the beginning and 171.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 20:17:22,795 INFO L158 Benchmark]: Boogie Preprocessor took 15.91ms. Allocated memory is still 203.4MB. Free memory was 171.4MB in the beginning and 170.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 20:17:22,795 INFO L158 Benchmark]: RCFGBuilder took 203.96ms. Allocated memory is still 203.4MB. Free memory was 170.4MB in the beginning and 161.4MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-01-10 20:17:22,795 INFO L158 Benchmark]: IcfgTransformer took 81.06ms. Allocated memory is still 203.4MB. Free memory was 161.4MB in the beginning and 158.3MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-01-10 20:17:22,796 INFO L158 Benchmark]: TraceAbstraction took 3600.66ms. Allocated memory was 203.4MB in the beginning and 273.7MB in the end (delta: 70.3MB). Free memory was 157.8MB in the beginning and 151.0MB in the end (delta: 6.8MB). Peak memory consumption was 78.6MB. Max. memory is 8.0GB. [2022-01-10 20:17:22,797 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 203.4MB. Free memory is still 162.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 198.80ms. Allocated memory is still 203.4MB. Free memory was 146.6MB in the beginning and 172.9MB in the end (delta: -26.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.69ms. Allocated memory is still 203.4MB. Free memory was 172.9MB in the beginning and 171.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.91ms. Allocated memory is still 203.4MB. Free memory was 171.4MB in the beginning and 170.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 203.96ms. Allocated memory is still 203.4MB. Free memory was 170.4MB in the beginning and 161.4MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 81.06ms. Allocated memory is still 203.4MB. Free memory was 161.4MB in the beginning and 158.3MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * TraceAbstraction took 3600.66ms. Allocated memory was 203.4MB in the beginning and 273.7MB in the end (delta: 70.3MB). Free memory was 157.8MB in the beginning and 151.0MB in the end (delta: 6.8MB). Peak memory consumption was 78.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 1 procedures, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 3.5s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 91 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 91 mSDsluCounter, 157 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 106 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 190 IncrementalHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 51 mSDtfsCounter, 190 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=3, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 20 NumberOfFragments, 85 HoareAnnotationTreeSize, 4 FomulaSimplifications, 373 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 546 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 650 SizeOfPredicates, 10 NumberOfNonLiveVariables, 206 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 5/44 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 2 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (~bvule32(1bv32, cond) && ~bvule34(~bvadd16(~bvadd16(~zero_extendFrom33To34(~bvmul64(4294967296bv33, ~zero_extendFrom1To33(n[31:31]))), ~zero_extendFrom32To34(m)), 1bv34), ~bvadd16(~zero_extendFrom33To34(m[31:31] ++ 0bv32), ~zero_extendFrom32To34(n)))) || (~bvule32(1bv32, cond) && ~bvule32(m, 0bv32)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((~bvule32(x, ~bvmul64(2bv32, ~zero_extendFrom31To32(x[30:0]))) || ~bvule33(4294967296bv33, ~zero_extendFrom32To33(x))) && ~bvule32(m, 0bv32)) || (((~bvule32(x, ~bvmul64(2bv32, ~zero_extendFrom31To32(x[30:0]))) || ~bvule33(4294967296bv33, ~zero_extendFrom32To33(x))) && ~bvule34(~bvadd16(~bvadd16(~zero_extendFrom33To34(~bvmul64(4294967296bv33, ~zero_extendFrom1To33(n[31:31]))), ~zero_extendFrom32To34(m)), 1bv34), ~bvadd16(~zero_extendFrom33To34(m[31:31] ++ 0bv32), ~zero_extendFrom32To34(n)))) && (~bvule32(m, ~bvmul64(2bv32, ~zero_extendFrom31To32(m[30:0]))) || ~bvule33(4294967296bv33, ~zero_extendFrom32To33(m)))) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-01-10 20:17:22,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...