/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_BITWISE.epf -i ../../../trunk/examples/svcomp/loop-zilu/benchmark25_linear.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 08:45:48,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 08:45:48,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 08:45:48,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 08:45:48,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 08:45:48,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 08:45:48,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 08:45:48,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 08:45:48,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 08:45:48,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 08:45:48,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 08:45:48,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 08:45:48,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 08:45:48,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 08:45:48,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 08:45:48,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 08:45:48,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 08:45:48,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 08:45:48,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 08:45:48,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 08:45:48,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 08:45:48,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 08:45:48,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 08:45:48,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 08:45:48,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 08:45:48,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 08:45:48,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 08:45:48,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 08:45:48,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 08:45:48,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 08:45:48,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 08:45:48,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 08:45:48,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 08:45:48,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 08:45:48,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 08:45:48,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 08:45:48,796 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 08:45:48,824 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 08:45:48,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 08:45:48,824 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 08:45:48,824 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 08:45:48,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 08:45:48,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 08:45:48,826 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 08:45:48,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 08:45:48,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 08:45:48,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 08:45:48,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 08:45:48,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 08:45:48,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 08:45:48,827 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 08:45:48,827 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 08:45:48,827 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 08:45:48,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 08:45:48,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 08:45:48,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 08:45:48,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 08:45:48,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 08:45:48,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:45:48,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 08:45:48,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 08:45:48,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 08:45:48,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 08:45:48,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 08:45:48,829 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 08:45:48,829 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 08:45:48,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 08:45:48,829 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 08:45:48,829 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 08:45:48,830 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 08:45:48,830 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 08:45:49,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 08:45:49,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 08:45:49,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 08:45:49,032 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 08:45:49,039 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 08:45:49,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark25_linear.i [2022-01-10 08:45:49,089 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fb09df1a/d710a485f2444024bbcbedf1f27ae9a6/FLAGa4e78a22d [2022-01-10 08:45:49,436 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 08:45:49,437 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark25_linear.i [2022-01-10 08:45:49,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fb09df1a/d710a485f2444024bbcbedf1f27ae9a6/FLAGa4e78a22d [2022-01-10 08:45:49,450 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fb09df1a/d710a485f2444024bbcbedf1f27ae9a6 [2022-01-10 08:45:49,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 08:45:49,453 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 08:45:49,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 08:45:49,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 08:45:49,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 08:45:49,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:45:49" (1/1) ... [2022-01-10 08:45:49,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65513191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:45:49, skipping insertion in model container [2022-01-10 08:45:49,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:45:49" (1/1) ... [2022-01-10 08:45:49,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 08:45:49,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 08:45:49,642 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-zilu/benchmark25_linear.i[868,881] [2022-01-10 08:45:49,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:45:49,679 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 08:45:49,692 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-zilu/benchmark25_linear.i[868,881] [2022-01-10 08:45:49,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:45:49,701 INFO L208 MainTranslator]: Completed translation [2022-01-10 08:45:49,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:45:49 WrapperNode [2022-01-10 08:45:49,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 08:45:49,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 08:45:49,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 08:45:49,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 08:45:49,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:45:49" (1/1) ... [2022-01-10 08:45:49,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:45:49" (1/1) ... [2022-01-10 08:45:49,726 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 25 [2022-01-10 08:45:49,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 08:45:49,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 08:45:49,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 08:45:49,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 08:45:49,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:45:49" (1/1) ... [2022-01-10 08:45:49,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:45:49" (1/1) ... [2022-01-10 08:45:49,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:45:49" (1/1) ... [2022-01-10 08:45:49,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:45:49" (1/1) ... [2022-01-10 08:45:49,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:45:49" (1/1) ... [2022-01-10 08:45:49,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:45:49" (1/1) ... [2022-01-10 08:45:49,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:45:49" (1/1) ... [2022-01-10 08:45:49,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 08:45:49,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 08:45:49,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 08:45:49,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 08:45:49,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:45:49" (1/1) ... [2022-01-10 08:45:49,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:45:49,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:45:49,776 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 08:45:49,791 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 08:45:49,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 08:45:49,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 08:45:49,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 08:45:49,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 08:45:49,859 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 08:45:49,860 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 08:45:49,916 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 08:45:49,919 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 08:45:49,919 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 08:45:49,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:45:49 BoogieIcfgContainer [2022-01-10 08:45:49,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 08:45:49,922 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 08:45:49,922 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 08:45:49,923 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 08:45:49,925 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:45:49" (1/1) ... [2022-01-10 08:45:49,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:45:49 BasicIcfg [2022-01-10 08:45:49,979 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 08:45:49,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 08:45:49,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 08:45:49,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 08:45:49,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:45:49" (1/4) ... [2022-01-10 08:45:49,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ef0c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:45:49, skipping insertion in model container [2022-01-10 08:45:49,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:45:49" (2/4) ... [2022-01-10 08:45:49,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ef0c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:45:49, skipping insertion in model container [2022-01-10 08:45:49,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:45:49" (3/4) ... [2022-01-10 08:45:49,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ef0c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:45:49, skipping insertion in model container [2022-01-10 08:45:49,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:45:49" (4/4) ... [2022-01-10 08:45:49,986 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark25_linear.iTransformedIcfg [2022-01-10 08:45:49,990 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 08:45:49,990 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 08:45:50,036 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 08:45:50,042 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 08:45:50,043 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 08:45:50,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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 08:45:50,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-10 08:45:50,055 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:45:50,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:45:50,056 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:45:50,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:45:50,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1973472424, now seen corresponding path program 1 times [2022-01-10 08:45:50,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:45:50,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318743252] [2022-01-10 08:45:50,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:45:50,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:45:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:45:50,239 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 08:45:50,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:45:50,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318743252] [2022-01-10 08:45:50,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318743252] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:45:50,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:45:50,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:45:50,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928071059] [2022-01-10 08:45:50,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:45:50,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 08:45:50,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:45:50,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 08:45:50,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 08:45:50,285 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 08:45:50,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:45:50,295 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2022-01-10 08:45:50,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 08:45:50,297 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-01-10 08:45:50,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:45:50,302 INFO L225 Difference]: With dead ends: 20 [2022-01-10 08:45:50,302 INFO L226 Difference]: Without dead ends: 8 [2022-01-10 08:45:50,304 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 08:45:50,307 INFO L933 BasicCegarLoop]: 13 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, 13 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 08:45:50,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:45:50,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-01-10 08:45:50,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-01-10 08:45:50,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 08:45:50,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-01-10 08:45:50,329 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2022-01-10 08:45:50,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:45:50,330 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-01-10 08:45:50,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 08:45:50,330 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-01-10 08:45:50,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-10 08:45:50,331 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:45:50,331 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:45:50,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 08:45:50,331 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:45:50,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:45:50,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1973502215, now seen corresponding path program 1 times [2022-01-10 08:45:50,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:45:50,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493054128] [2022-01-10 08:45:50,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:45:50,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:45:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:45:50,411 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 08:45:50,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:45:50,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493054128] [2022-01-10 08:45:50,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493054128] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:45:50,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:45:50,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:45:50,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314588782] [2022-01-10 08:45:50,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:45:50,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:45:50,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:45:50,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:45:50,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:45:50,417 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 08:45:50,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:45:50,437 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-01-10 08:45:50,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:45:50,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2022-01-10 08:45:50,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:45:50,438 INFO L225 Difference]: With dead ends: 13 [2022-01-10 08:45:50,438 INFO L226 Difference]: Without dead ends: 9 [2022-01-10 08:45:50,438 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 [2022-01-10 08:45:50,440 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:45:50,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:45:50,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-01-10 08:45:50,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-01-10 08:45:50,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 08:45:50,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-01-10 08:45:50,443 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2022-01-10 08:45:50,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:45:50,444 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-01-10 08:45:50,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 08:45:50,444 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-01-10 08:45:50,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 08:45:50,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:45:50,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:45:50,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 08:45:50,445 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:45:50,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:45:50,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1049859691, now seen corresponding path program 1 times [2022-01-10 08:45:50,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:45:50,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349841052] [2022-01-10 08:45:50,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:45:50,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:45:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:45:50,576 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 08:45:50,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:45:50,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349841052] [2022-01-10 08:45:50,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349841052] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 08:45:50,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744821619] [2022-01-10 08:45:50,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:45:50,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:45:50,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:45:50,580 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 08:45:50,594 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 08:45:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:45:50,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 08:45:50,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:45:50,792 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 08:45:50,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 08:45:50,954 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 08:45:50,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744821619] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 08:45:50,955 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 08:45:50,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-10 08:45:50,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035068646] [2022-01-10 08:45:50,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 08:45:50,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 08:45:50,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:45:50,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 08:45:50,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:45:50,961 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 08:45:50,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:45:50,986 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2022-01-10 08:45:50,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:45:50,987 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 8 [2022-01-10 08:45:50,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:45:50,988 INFO L225 Difference]: With dead ends: 15 [2022-01-10 08:45:50,988 INFO L226 Difference]: Without dead ends: 11 [2022-01-10 08:45:50,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:45:50,993 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:45:50,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 2 Unchecked, 0.0s Time] [2022-01-10 08:45:50,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-01-10 08:45:50,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-01-10 08:45:50,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 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) [2022-01-10 08:45:51,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2022-01-10 08:45:51,000 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2022-01-10 08:45:51,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:45:51,000 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2022-01-10 08:45:51,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 08:45:51,001 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2022-01-10 08:45:51,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 08:45:51,002 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:45:51,002 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:45:51,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 08:45:51,223 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 08:45:51,224 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:45:51,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:45:51,224 INFO L85 PathProgramCache]: Analyzing trace with hash -375490069, now seen corresponding path program 2 times [2022-01-10 08:45:51,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:45:51,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525420881] [2022-01-10 08:45:51,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:45:51,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:45:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:45:51,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:45:51,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:45:51,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525420881] [2022-01-10 08:45:51,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525420881] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 08:45:51,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242325575] [2022-01-10 08:45:51,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 08:45:51,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:45:51,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:45:51,405 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 08:45:51,438 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 08:45:51,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 08:45:51,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 08:45:51,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 08:45:51,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:45:51,906 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 08:45:51,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:45:51,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242325575] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:45:51,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 08:45:51,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-01-10 08:45:51,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586048029] [2022-01-10 08:45:51,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:45:51,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:45:51,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:45:51,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:45:51,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-10 08:45:51,915 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 08:45:51,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:45:51,972 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2022-01-10 08:45:51,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:45:51,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 10 [2022-01-10 08:45:51,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:45:51,973 INFO L225 Difference]: With dead ends: 11 [2022-01-10 08:45:51,973 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 08:45:51,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-10 08:45:51,974 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:45:51,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 7 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:45:51,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 08:45:51,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 08:45:51,975 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 08:45:51,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 08:45:51,976 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2022-01-10 08:45:51,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:45:51,976 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 08:45:51,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 08:45:51,976 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 08:45:51,976 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 08:45:51,979 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 08:45:51,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 08:45:52,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-10 08:45:52,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 08:45:52,258 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-01-10 08:45:52,258 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-01-10 08:45:52,258 INFO L858 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2022-01-10 08:45:52,259 INFO L861 garLoopResultBuilder]: At program point L26(lines 19 27) the Hoare annotation is: true [2022-01-10 08:45:52,259 INFO L854 garLoopResultBuilder]: At program point L22-2(lines 22 24) the Hoare annotation is: (or (and (<= (+ |ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int| 1) (* (div |ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int| 2147483648) 4294967296)) (<= |ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int| 4294967295)) (and (<= 0 |ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int|) (< |ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int| 4294967296) (let ((.cse0 (* (- 1) |ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int|))) (< (div (+ .cse0 10) (- 4294967296)) (+ (div (+ .cse0 4294967296) 4294967296) (div (+ (- 1) |ULTIMATE.start_ULTIMATE.start_main_~x~0#1Int|) 2147483648) 1))))) [2022-01-10 08:45:52,259 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-01-10 08:45:52,259 INFO L858 garLoopResultBuilder]: For program point L22-3(lines 22 24) no Hoare annotation was computed. [2022-01-10 08:45:52,259 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-01-10 08:45:52,259 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2022-01-10 08:45:52,259 INFO L858 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-01-10 08:45:52,259 INFO L858 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2022-01-10 08:45:52,260 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-01-10 08:45:52,262 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-01-10 08:45:52,263 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 08:45:52,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:45:52 BasicIcfg [2022-01-10 08:45:52,292 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 08:45:52,293 INFO L158 Benchmark]: Toolchain (without parser) took 2839.73ms. Allocated memory was 195.0MB in the beginning and 285.2MB in the end (delta: 90.2MB). Free memory was 137.7MB in the beginning and 103.7MB in the end (delta: 33.9MB). Peak memory consumption was 123.8MB. Max. memory is 8.0GB. [2022-01-10 08:45:52,293 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 195.0MB. Free memory is still 153.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 08:45:52,294 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.33ms. Allocated memory was 195.0MB in the beginning and 285.2MB in the end (delta: 90.2MB). Free memory was 137.4MB in the beginning and 258.3MB in the end (delta: -120.8MB). Peak memory consumption was 13.3MB. Max. memory is 8.0GB. [2022-01-10 08:45:52,294 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.98ms. Allocated memory is still 285.2MB. Free memory was 258.3MB in the beginning and 256.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 08:45:52,295 INFO L158 Benchmark]: Boogie Preprocessor took 13.89ms. Allocated memory is still 285.2MB. Free memory was 256.8MB in the beginning and 255.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 08:45:52,295 INFO L158 Benchmark]: RCFGBuilder took 179.55ms. Allocated memory is still 285.2MB. Free memory was 255.8MB in the beginning and 245.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-10 08:45:52,295 INFO L158 Benchmark]: IcfgTransformer took 57.57ms. Allocated memory is still 285.2MB. Free memory was 245.8MB in the beginning and 243.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 08:45:52,296 INFO L158 Benchmark]: TraceAbstraction took 2311.43ms. Allocated memory is still 285.2MB. Free memory was 242.7MB in the beginning and 103.7MB in the end (delta: 138.9MB). Peak memory consumption was 138.4MB. Max. memory is 8.0GB. [2022-01-10 08:45:52,298 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 195.0MB. Free memory is still 153.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 248.33ms. Allocated memory was 195.0MB in the beginning and 285.2MB in the end (delta: 90.2MB). Free memory was 137.4MB in the beginning and 258.3MB in the end (delta: -120.8MB). Peak memory consumption was 13.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.98ms. Allocated memory is still 285.2MB. Free memory was 258.3MB in the beginning and 256.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 13.89ms. Allocated memory is still 285.2MB. Free memory was 256.8MB in the beginning and 255.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 179.55ms. Allocated memory is still 285.2MB. Free memory was 255.8MB in the beginning and 245.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 57.57ms. Allocated memory is still 285.2MB. Free memory was 245.8MB in the beginning and 243.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 2311.43ms. Allocated memory is still 285.2MB. Free memory was 242.7MB in the beginning and 103.7MB in the end (delta: 138.9MB). Peak memory consumption was 138.4MB. 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: 16]: 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, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26 IncrementalHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 30 mSDtfsCounter, 26 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 16, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 44 HoareAnnotationTreeSize, 2 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 91 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 51 ConstructedInterpolants, 1 QuantifiedInterpolants, 258 SizeOfPredicates, 3 NumberOfNonLiveVariables, 138 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 6/15 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((~bvule32(0bv32, x) && ~bvslt32((if !(0bv65 == ~bvurem65(~bvadd16(~sign_extendFrom8To32(~bvmul64(~zero_extendFrom32To64(x), 18446744073709551615bv64)), 10bv65), 36893488143124135936bv65)) then (if 1bv1 == ~bvadd16(~sign_extendFrom8To32(~bvmul64(~zero_extendFrom32To64(x), 18446744073709551615bv64)), 10bv65)[64:64] then ~bvadd16(~bvsdiv65(~bvadd16(~sign_extendFrom8To32(~bvmul64(~zero_extendFrom32To64(x), 18446744073709551615bv64)), 10bv65), 36893488143124135936bv65), 1bv65) else ~bvsdiv65(~bvadd16(~sign_extendFrom8To32(~bvmul64(~zero_extendFrom32To64(x), 18446744073709551615bv64)), 10bv65), 36893488143124135936bv65)) else ~bvsdiv65(~bvadd16(~sign_extendFrom8To32(~bvmul64(~zero_extendFrom32To64(x), 18446744073709551615bv64)), 10bv65), 36893488143124135936bv65)), ~sign_extendFrom8To32(~bvadd16(~bvadd16(~sign_extendFrom8To32(~bvadd16(~sign_extendFrom8To32(~bvmul64(~zero_extendFrom32To64(x), 18446744073709551615bv64)), 4294967296bv65)[64:32]), ~sign_extendFrom8To32(~bvadd16(8589934591bv33, ~zero_extendFrom32To33(x))[32:31])), 1bv34)))) && ~bvult64(~zero_extendFrom32To33(x), 4294967296bv33)) || (~bvule33(~bvadd16(~zero_extendFrom32To33(x), 1bv33), x[31:31] ++ 0bv32) && ~bvule32(x, 4294967295bv32)) RESULT: Ultimate proved your program to be correct! [2022-01-10 08:45:52,335 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...