/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_SUM.epf -i ../../../trunk/examples/svcomp/array-fpi/brs4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 03:19:52,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 03:19:52,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 03:19:52,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 03:19:52,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 03:19:52,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 03:19:52,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 03:19:52,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 03:19:52,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 03:19:52,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 03:19:52,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 03:19:52,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 03:19:52,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 03:19:52,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 03:19:52,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 03:19:52,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 03:19:52,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 03:19:52,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 03:19:52,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 03:19:52,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 03:19:52,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 03:19:52,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 03:19:52,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 03:19:52,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 03:19:52,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 03:19:52,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 03:19:52,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 03:19:52,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 03:19:52,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 03:19:52,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 03:19:52,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 03:19:52,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 03:19:52,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 03:19:52,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 03:19:52,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 03:19:52,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 03:19:52,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 03:19:52,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 03:19:52,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 03:19:52,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 03:19:52,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 03:19:52,956 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 03:19:52,982 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 03:19:52,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 03:19:52,983 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 03:19:52,983 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 03:19:52,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 03:19:52,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 03:19:52,984 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 03:19:52,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 03:19:52,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 03:19:52,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 03:19:52,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 03:19:52,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 03:19:52,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 03:19:52,984 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 03:19:52,985 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 03:19:52,985 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 03:19:52,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 03:19:52,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 03:19:52,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 03:19:52,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 03:19:52,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 03:19:52,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 03:19:52,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 03:19:52,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 03:19:52,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 03:19:52,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 03:19:52,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 03:19:52,986 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 03:19:52,986 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 03:19:52,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 03:19:52,986 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 03:19:52,986 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 03:19:52,987 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 03:19:52,987 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 03:19:53,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 03:19:53,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 03:19:53,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 03:19:53,204 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 03:19:53,204 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 03:19:53,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs4.c [2022-01-11 03:19:53,247 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56834a48e/f3e465311a144b5e9df7f30b5e8085d5/FLAG45401bfcf [2022-01-11 03:19:53,622 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 03:19:53,622 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs4.c [2022-01-11 03:19:53,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56834a48e/f3e465311a144b5e9df7f30b5e8085d5/FLAG45401bfcf [2022-01-11 03:19:53,644 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56834a48e/f3e465311a144b5e9df7f30b5e8085d5 [2022-01-11 03:19:53,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 03:19:53,649 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 03:19:53,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 03:19:53,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 03:19:53,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 03:19:53,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:19:53" (1/1) ... [2022-01-11 03:19:53,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30456b05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:19:53, skipping insertion in model container [2022-01-11 03:19:53,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:19:53" (1/1) ... [2022-01-11 03:19:53,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 03:19:53,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 03:19:53,826 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs4.c[587,600] [2022-01-11 03:19:53,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 03:19:53,850 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 03:19:53,858 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs4.c[587,600] [2022-01-11 03:19:53,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 03:19:53,875 INFO L208 MainTranslator]: Completed translation [2022-01-11 03:19:53,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:19:53 WrapperNode [2022-01-11 03:19:53,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 03:19:53,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 03:19:53,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 03:19:53,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 03:19:53,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:19:53" (1/1) ... [2022-01-11 03:19:53,895 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:19:53" (1/1) ... [2022-01-11 03:19:53,914 INFO L137 Inliner]: procedures = 21, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2022-01-11 03:19:53,914 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 03:19:53,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 03:19:53,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 03:19:53,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 03:19:53,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:19:53" (1/1) ... [2022-01-11 03:19:53,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:19:53" (1/1) ... [2022-01-11 03:19:53,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:19:53" (1/1) ... [2022-01-11 03:19:53,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:19:53" (1/1) ... [2022-01-11 03:19:53,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:19:53" (1/1) ... [2022-01-11 03:19:53,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:19:53" (1/1) ... [2022-01-11 03:19:53,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:19:53" (1/1) ... [2022-01-11 03:19:53,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 03:19:53,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 03:19:53,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 03:19:53,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 03:19:53,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:19:53" (1/1) ... [2022-01-11 03:19:53,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 03:19:53,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:19:53,980 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) [2022-01-11 03:19:53,982 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 [2022-01-11 03:19:54,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 03:19:54,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 03:19:54,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-11 03:19:54,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-11 03:19:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-11 03:19:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-11 03:19:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 03:19:54,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 03:19:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-11 03:19:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-11 03:19:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-11 03:19:54,084 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 03:19:54,085 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 03:19:54,279 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 03:19:54,286 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 03:19:54,286 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-11 03:19:54,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:19:54 BoogieIcfgContainer [2022-01-11 03:19:54,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 03:19:54,288 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 03:19:54,288 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 03:19:54,291 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 03:19:54,293 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:19:54" (1/1) ... [2022-01-11 03:19:54,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:19:54 BasicIcfg [2022-01-11 03:19:54,418 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 03:19:54,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 03:19:54,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 03:19:54,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 03:19:54,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 03:19:53" (1/4) ... [2022-01-11 03:19:54,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de2ce62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:19:54, skipping insertion in model container [2022-01-11 03:19:54,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:19:53" (2/4) ... [2022-01-11 03:19:54,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de2ce62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:19:54, skipping insertion in model container [2022-01-11 03:19:54,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:19:54" (3/4) ... [2022-01-11 03:19:54,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de2ce62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 03:19:54, skipping insertion in model container [2022-01-11 03:19:54,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:19:54" (4/4) ... [2022-01-11 03:19:54,424 INFO L111 eAbstractionObserver]: Analyzing ICFG brs4.cTransformedIcfg [2022-01-11 03:19:54,428 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 03:19:54,428 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 03:19:54,458 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 03:19:54,462 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 [2022-01-11 03:19:54,462 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 03:19:54,470 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 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) [2022-01-11 03:19:54,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 03:19:54,473 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:19:54,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:19:54,474 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:19:54,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:19:54,477 INFO L85 PathProgramCache]: Analyzing trace with hash -289435600, now seen corresponding path program 1 times [2022-01-11 03:19:54,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:19:54,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206604334] [2022-01-11 03:19:54,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:19:54,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:19:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:19:54,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:19:54,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:19:54,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206604334] [2022-01-11 03:19:54,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206604334] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:19:54,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:19:54,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:19:54,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087537083] [2022-01-11 03:19:54,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:19:54,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 03:19:54,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:19:54,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 03:19:54,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 03:19:54,678 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-01-11 03:19:54,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:19:54,688 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2022-01-11 03:19:54,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 03:19:54,690 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2022-01-11 03:19:54,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:19:54,697 INFO L225 Difference]: With dead ends: 36 [2022-01-11 03:19:54,697 INFO L226 Difference]: Without dead ends: 16 [2022-01-11 03:19:54,699 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 [2022-01-11 03:19:54,703 INFO L933 BasicCegarLoop]: 24 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, 24 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 [2022-01-11 03:19:54,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 03:19:54,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-01-11 03:19:54,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-01-11 03:19:54,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 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) [2022-01-11 03:19:54,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-01-11 03:19:54,728 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2022-01-11 03:19:54,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:19:54,728 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-01-11 03:19:54,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-01-11 03:19:54,730 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2022-01-11 03:19:54,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 03:19:54,730 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:19:54,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:19:54,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 03:19:54,731 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:19:54,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:19:54,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1482033677, now seen corresponding path program 1 times [2022-01-11 03:19:54,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:19:54,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772964960] [2022-01-11 03:19:54,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:19:54,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:19:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:19:54,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:19:54,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:19:54,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772964960] [2022-01-11 03:19:54,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772964960] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:19:54,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:19:54,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 03:19:54,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523236745] [2022-01-11 03:19:54,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:19:54,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:19:54,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:19:54,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:19:54,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:19:54,932 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-01-11 03:19:57,004 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-11 03:19:57,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:19:57,114 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2022-01-11 03:19:57,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:19:57,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2022-01-11 03:19:57,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:19:57,116 INFO L225 Difference]: With dead ends: 36 [2022-01-11 03:19:57,117 INFO L226 Difference]: Without dead ends: 28 [2022-01-11 03:19:57,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:19:57,118 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 16 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-11 03:19:57,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 14 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-11 03:19:57,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-01-11 03:19:57,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2022-01-11 03:19:57,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 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) [2022-01-11 03:19:57,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-01-11 03:19:57,122 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 11 [2022-01-11 03:19:57,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:19:57,123 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-01-11 03:19:57,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-01-11 03:19:57,125 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-01-11 03:19:57,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-11 03:19:57,125 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:19:57,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:19:57,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 03:19:57,126 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:19:57,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:19:57,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1285844753, now seen corresponding path program 1 times [2022-01-11 03:19:57,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:19:57,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792952716] [2022-01-11 03:19:57,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:19:57,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:19:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:19:57,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 03:19:57,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:19:57,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792952716] [2022-01-11 03:19:57,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792952716] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:19:57,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:19:57,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 03:19:57,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884666582] [2022-01-11 03:19:57,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:19:57,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 03:19:57,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:19:57,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 03:19:57,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-11 03:19:57,641 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2022-01-11 03:19:57,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:19:57,823 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2022-01-11 03:19:57,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 03:19:57,824 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 17 [2022-01-11 03:19:57,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:19:57,824 INFO L225 Difference]: With dead ends: 25 [2022-01-11 03:19:57,824 INFO L226 Difference]: Without dead ends: 21 [2022-01-11 03:19:57,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-11 03:19:57,825 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 03:19:57,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 28 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 03:19:57,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-01-11 03:19:57,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2022-01-11 03:19:57,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 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) [2022-01-11 03:19:57,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2022-01-11 03:19:57,829 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 17 [2022-01-11 03:19:57,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:19:57,830 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2022-01-11 03:19:57,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2022-01-11 03:19:57,830 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2022-01-11 03:19:57,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-11 03:19:57,830 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:19:57,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:19:57,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 03:19:57,831 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:19:57,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:19:57,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1257215602, now seen corresponding path program 1 times [2022-01-11 03:19:57,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:19:57,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002902438] [2022-01-11 03:19:57,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:19:57,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:19:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:19:57,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 03:19:57,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:19:57,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002902438] [2022-01-11 03:19:57,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002902438] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:19:57,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:19:57,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:19:57,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194277595] [2022-01-11 03:19:57,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:19:57,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:19:57,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:19:57,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:19:57,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:19:57,906 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-01-11 03:19:57,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:19:57,963 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2022-01-11 03:19:57,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:19:57,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2022-01-11 03:19:57,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:19:57,964 INFO L225 Difference]: With dead ends: 36 [2022-01-11 03:19:57,964 INFO L226 Difference]: Without dead ends: 23 [2022-01-11 03:19:57,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:19:57,965 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 03:19:57,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 19 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 03:19:57,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-01-11 03:19:57,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2022-01-11 03:19:57,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 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) [2022-01-11 03:19:57,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-01-11 03:19:57,971 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 17 [2022-01-11 03:19:57,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:19:57,971 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-01-11 03:19:57,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-01-11 03:19:57,972 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-01-11 03:19:57,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-11 03:19:57,972 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:19:57,972 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:19:57,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 03:19:57,972 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:19:57,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:19:57,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1664260436, now seen corresponding path program 1 times [2022-01-11 03:19:57,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:19:57,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069266308] [2022-01-11 03:19:57,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:19:57,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:19:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:19:58,172 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:19:58,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:19:58,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069266308] [2022-01-11 03:19:58,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069266308] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 03:19:58,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933004703] [2022-01-11 03:19:58,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:19:58,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:19:58,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:19:58,176 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) [2022-01-11 03:19:58,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 03:19:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:19:58,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-11 03:19:58,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:19:58,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:19:58,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 03:19:58,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:19:58,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933004703] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 03:19:58,829 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 03:19:58,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-01-11 03:19:58,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240218289] [2022-01-11 03:19:58,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 03:19:58,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-11 03:19:58,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:19:58,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-11 03:19:58,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-01-11 03:19:58,831 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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) [2022-01-11 03:20:01,041 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-11 03:20:01,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:20:01,189 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2022-01-11 03:20:01,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 03:20:01,189 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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 20 [2022-01-11 03:20:01,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:20:01,190 INFO L225 Difference]: With dead ends: 47 [2022-01-11 03:20:01,190 INFO L226 Difference]: Without dead ends: 27 [2022-01-11 03:20:01,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-01-11 03:20:01,191 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 27 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-11 03:20:01,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 41 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 144 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-01-11 03:20:01,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-11 03:20:01,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2022-01-11 03:20:01,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 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) [2022-01-11 03:20:01,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-01-11 03:20:01,196 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 20 [2022-01-11 03:20:01,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:20:01,196 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-01-11 03:20:01,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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) [2022-01-11 03:20:01,197 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-01-11 03:20:01,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-11 03:20:01,197 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:20:01,197 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:20:01,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 03:20:01,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:20:01,408 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:20:01,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:20:01,408 INFO L85 PathProgramCache]: Analyzing trace with hash 634847915, now seen corresponding path program 1 times [2022-01-11 03:20:01,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:20:01,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003071636] [2022-01-11 03:20:01,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:20:01,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:20:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:20:39,287 WARN L228 SmtUtils]: Spent 13.54s on a formula simplification. DAG size of input: 94 DAG size of output: 76 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-11 03:20:53,416 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 (div |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 2147483648))) (let ((.cse3 (div c_~N~0Int 2147483648)) (.cse5 (div .cse6 2))) (let ((.cse4 (let ((.cse9 (* 73786976277658337280 .cse6)) (.cse10 (* |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 4)) (.cse11 (* .cse5 (- 147573952555316674560)))) (let ((.cse8 (* (- 18446744073709551616) (div (+ .cse9 .cse10 .cse11) 18446744073709551616)))) (+ .cse8 .cse9 .cse10 |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| .cse11 (* (div (+ .cse8 .cse9 .cse10 |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| .cse11) 18446744073709551616) (- 18446744073709551616)))))) (.cse7 (div .cse3 2))) (and (not (= |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt| |c_ULTIMATE.start_ULTIMATE.start_main_~#sum~0#1.baseInt|)) (<= |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| (+ (* 1073741824 (div (let ((.cse0 (* (- 4294967296) .cse3)) (.cse1 (* (div (+ (* (- 1) |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int|) 2147483648) 2147483648) (- 4294967296))) (.cse2 (* (div (+ |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 1) 4294967296) (- 4294967296)))) (+ (- 1) .cse0 .cse1 c_~N~0Int .cse2 (* (- 1073741824) (div (+ 536870910 |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int|) 536870912)) (* (div (+ (- 2) .cse0 .cse1 c_~N~0Int .cse2) 1073741824) 2147483648))) 1073741824)) 1)) (= .cse4 4) (= (+ (* (- 2) .cse5) .cse6) 0) (<= 1 (+ (* (div (+ (* .cse7 (- 36893488138829168640)) (* 18446744069414584320 .cse3) 2 (* (- 2) |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int|) (* (- 4611686018427387904) (div (+ (* c_~N~0Int 4) (* 73786976277658337280 .cse3) (* .cse7 (- 147573952555316674560))) 18446744073709551616)) c_~N~0Int) 4294967296) 2147483648) |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int|)) (= |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| 0) (= (select (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) .cse4) 0) (< 0 (+ .cse7 1)))))) is different from false [2022-01-11 03:21:03,693 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-01-11 03:21:03,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:21:03,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003071636] [2022-01-11 03:21:03,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003071636] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 03:21:03,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604915440] [2022-01-11 03:21:03,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:21:03,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:21:03,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:21:03,695 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) [2022-01-11 03:21:03,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process