/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_LAZY.epf -i ../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:19:33,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:19:33,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:19:33,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:19:33,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:19:33,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:19:33,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:19:33,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:19:33,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:19:33,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:19:33,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:19:33,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:19:33,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:19:33,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:19:33,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:19:33,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:19:33,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:19:33,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:19:33,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:19:33,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:19:33,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:19:33,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:19:33,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:19:33,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:19:33,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 18:19:33,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:19:33,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:19:33,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:19:33,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:19:33,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:19:33,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:19:33,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:19:33,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:19:33,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:19:33,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:19:33,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:19:33,932 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:19:33,950 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:19:33,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:19:33,951 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:19:33,951 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:19:33,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:19:33,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:19:33,952 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:19:33,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:19:33,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:19:33,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:19:33,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:19:33,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:19:33,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:19:33,954 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:19:33,954 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:19:33,954 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:19:33,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:19:33,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:19:33,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:19:33,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:19:33,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:19:33,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:19:33,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:19:33,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:19:33,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:19:33,956 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:19:33,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:19:33,956 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:19:33,956 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:19:33,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:19:33,957 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:19:33,957 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:19:33,957 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:19:33,958 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:19:34,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:19:34,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:19:34,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:19:34,224 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:19:34,224 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:19:34,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c [2022-01-10 18:19:34,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29f3ec100/74200897bfb14ee3b1753cf2b91a5d23/FLAGf35aa6226 [2022-01-10 18:19:34,642 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:19:34,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/EvenOdd01-1.c [2022-01-10 18:19:34,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29f3ec100/74200897bfb14ee3b1753cf2b91a5d23/FLAGf35aa6226 [2022-01-10 18:19:35,064 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29f3ec100/74200897bfb14ee3b1753cf2b91a5d23 [2022-01-10 18:19:35,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:19:35,067 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:19:35,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:19:35,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:19:35,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:19:35,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:19:35" (1/1) ... [2022-01-10 18:19:35,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e48d385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:35, skipping insertion in model container [2022-01-10 18:19:35,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:19:35" (1/1) ... [2022-01-10 18:19:35,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:19:35,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:19:35,301 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/EvenOdd01-1.c[975,988] [2022-01-10 18:19:35,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:19:35,313 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:19:35,326 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/EvenOdd01-1.c[975,988] [2022-01-10 18:19:35,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:19:35,339 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:19:35,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:35 WrapperNode [2022-01-10 18:19:35,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:19:35,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:19:35,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:19:35,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:19:35,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:35" (1/1) ... [2022-01-10 18:19:35,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:35" (1/1) ... [2022-01-10 18:19:35,367 INFO L137 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2022-01-10 18:19:35,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:19:35,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:19:35,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:19:35,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:19:35,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:35" (1/1) ... [2022-01-10 18:19:35,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:35" (1/1) ... [2022-01-10 18:19:35,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:35" (1/1) ... [2022-01-10 18:19:35,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:35" (1/1) ... [2022-01-10 18:19:35,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:35" (1/1) ... [2022-01-10 18:19:35,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:35" (1/1) ... [2022-01-10 18:19:35,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:35" (1/1) ... [2022-01-10 18:19:35,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:19:35,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:19:35,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:19:35,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:19:35,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:35" (1/1) ... [2022-01-10 18:19:35,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:19:35,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:19:35,440 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 18:19:35,463 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 18:19:35,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:19:35,484 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2022-01-10 18:19:35,484 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2022-01-10 18:19:35,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:19:35,484 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2022-01-10 18:19:35,484 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2022-01-10 18:19:35,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:19:35,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:19:35,535 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:19:35,537 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:19:35,671 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:19:35,676 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:19:35,676 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 18:19:35,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:19:35 BoogieIcfgContainer [2022-01-10 18:19:35,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:19:35,678 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:19:35,679 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:19:35,680 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:19:35,682 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:19:35" (1/1) ... [2022-01-10 18:19:35,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:19:35 BasicIcfg [2022-01-10 18:19:35,742 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:19:35,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:19:35,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:19:35,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:19:35,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:19:35" (1/4) ... [2022-01-10 18:19:35,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440b8fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:19:35, skipping insertion in model container [2022-01-10 18:19:35,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:35" (2/4) ... [2022-01-10 18:19:35,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440b8fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:19:35, skipping insertion in model container [2022-01-10 18:19:35,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:19:35" (3/4) ... [2022-01-10 18:19:35,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440b8fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:19:35, skipping insertion in model container [2022-01-10 18:19:35,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:19:35" (4/4) ... [2022-01-10 18:19:35,748 INFO L111 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.cTransformedIcfg [2022-01-10 18:19:35,754 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:19:35,754 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 18:19:35,823 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:19:35,829 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 18:19:35,830 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 18:19:35,863 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 18:19:35,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 18:19:35,867 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:19:35,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:19:35,868 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:19:35,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:19:35,873 INFO L85 PathProgramCache]: Analyzing trace with hash -293542936, now seen corresponding path program 1 times [2022-01-10 18:19:35,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:19:35,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738750612] [2022-01-10 18:19:35,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:19:35,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:19:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:19:36,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 18:19:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:19:36,391 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 18:19:36,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:19:36,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738750612] [2022-01-10 18:19:36,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738750612] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:19:36,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:19:36,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:19:36,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079050813] [2022-01-10 18:19:36,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:19:36,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:19:36,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:19:36,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:19:36,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:19:36,421 INFO L87 Difference]: Start difference. First operand has 25 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 18:19:36,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:19:36,504 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2022-01-10 18:19:36,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:19:36,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-01-10 18:19:36,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:19:36,513 INFO L225 Difference]: With dead ends: 37 [2022-01-10 18:19:36,513 INFO L226 Difference]: Without dead ends: 24 [2022-01-10 18:19:36,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:19:36,518 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 17 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:19:36,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 102 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:19:36,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-01-10 18:19:36,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-01-10 18:19:36,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-10 18:19:36,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-01-10 18:19:36,549 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 11 [2022-01-10 18:19:36,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:19:36,549 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-01-10 18:19:36,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 18:19:36,550 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-01-10 18:19:36,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 18:19:36,551 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:19:36,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:19:36,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:19:36,552 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:19:36,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:19:36,552 INFO L85 PathProgramCache]: Analyzing trace with hash 393959604, now seen corresponding path program 1 times [2022-01-10 18:19:36,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:19:36,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350942602] [2022-01-10 18:19:36,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:19:36,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:19:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:19:36,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 18:19:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:19:36,788 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 18:19:36,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:19:36,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350942602] [2022-01-10 18:19:36,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350942602] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:19:36,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:19:36,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:19:36,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896450860] [2022-01-10 18:19:36,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:19:36,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:19:36,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:19:36,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:19:36,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:19:36,795 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 18:19:36,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:19:36,880 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-01-10 18:19:36,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:19:36,881 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-01-10 18:19:36,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:19:36,882 INFO L225 Difference]: With dead ends: 30 [2022-01-10 18:19:36,882 INFO L226 Difference]: Without dead ends: 26 [2022-01-10 18:19:36,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:19:36,888 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 8 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:19:36,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 98 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:19:36,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-10 18:19:36,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-01-10 18:19:36,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-10 18:19:36,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-01-10 18:19:36,894 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 12 [2022-01-10 18:19:36,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:19:36,895 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-01-10 18:19:36,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 18:19:36,895 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-01-10 18:19:36,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 18:19:36,896 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:19:36,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:19:36,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:19:36,897 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:19:36,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:19:36,897 INFO L85 PathProgramCache]: Analyzing trace with hash -325217637, now seen corresponding path program 1 times [2022-01-10 18:19:36,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:19:36,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486368252] [2022-01-10 18:19:36,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:19:36,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:19:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:19:36,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 18:19:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:19:37,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 18:19:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:19:37,048 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 18:19:37,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:19:37,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486368252] [2022-01-10 18:19:37,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486368252] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:19:37,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:19:37,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:19:37,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711950298] [2022-01-10 18:19:37,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:19:37,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:19:37,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:19:37,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:19:37,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:19:37,050 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 18:19:37,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:19:37,091 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2022-01-10 18:19:37,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:19:37,092 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-01-10 18:19:37,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:19:37,093 INFO L225 Difference]: With dead ends: 38 [2022-01-10 18:19:37,093 INFO L226 Difference]: Without dead ends: 26 [2022-01-10 18:19:37,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:19:37,101 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 18 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:19:37,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 70 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:19:37,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-10 18:19:37,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-01-10 18:19:37,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-10 18:19:37,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-01-10 18:19:37,114 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 18 [2022-01-10 18:19:37,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:19:37,114 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-01-10 18:19:37,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 18:19:37,114 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-01-10 18:19:37,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 18:19:37,115 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:19:37,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:19:37,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:19:37,115 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:19:37,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:19:37,116 INFO L85 PathProgramCache]: Analyzing trace with hash 837635920, now seen corresponding path program 1 times [2022-01-10 18:19:37,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:19:37,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155924626] [2022-01-10 18:19:37,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:19:37,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:19:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:19:37,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 18:19:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:19:37,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 18:19:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:19:37,540 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 18:19:37,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:19:37,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155924626] [2022-01-10 18:19:37,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155924626] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:19:37,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:19:37,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-10 18:19:37,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026875273] [2022-01-10 18:19:37,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:19:37,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 18:19:37,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:19:37,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 18:19:37,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-10 18:19:37,543 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 18:19:37,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:19:37,702 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2022-01-10 18:19:37,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:19:37,703 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-01-10 18:19:37,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:19:37,706 INFO L225 Difference]: With dead ends: 35 [2022-01-10 18:19:37,706 INFO L226 Difference]: Without dead ends: 31 [2022-01-10 18:19:37,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-01-10 18:19:37,712 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:19:37,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 108 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:19:37,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-10 18:19:37,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2022-01-10 18:19:37,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-10 18:19:37,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-01-10 18:19:37,722 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 19 [2022-01-10 18:19:37,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:19:37,723 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-01-10 18:19:37,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 18:19:37,723 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-01-10 18:19:37,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-10 18:19:37,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:19:37,724 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:19:37,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:19:37,725 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:19:37,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:19:37,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1127563943, now seen corresponding path program 1 times [2022-01-10 18:19:37,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:19:37,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155369197] [2022-01-10 18:19:37,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:19:37,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:19:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:19:37,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 18:19:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:19:37,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 18:19:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:19:37,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 18:19:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:19:37,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 18:19:37,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:19:37,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155369197] [2022-01-10 18:19:37,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155369197] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:19:37,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:19:37,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:19:37,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318696012] [2022-01-10 18:19:37,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:19:37,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:19:37,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:19:37,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:19:37,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:19:37,878 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 18:19:37,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:19:37,917 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-01-10 18:19:37,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:19:37,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-01-10 18:19:37,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:19:37,920 INFO L225 Difference]: With dead ends: 39 [2022-01-10 18:19:37,920 INFO L226 Difference]: Without dead ends: 27 [2022-01-10 18:19:37,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:19:37,921 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 17 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:19:37,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 57 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:19:37,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-10 18:19:37,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-01-10 18:19:37,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-10 18:19:37,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2022-01-10 18:19:37,929 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 25 [2022-01-10 18:19:37,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:19:37,929 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2022-01-10 18:19:37,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 18:19:37,930 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-01-10 18:19:37,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 18:19:37,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:19:37,931 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:19:37,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:19:37,931 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:19:37,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:19:37,932 INFO L85 PathProgramCache]: Analyzing trace with hash -156368041, now seen corresponding path program 1 times [2022-01-10 18:19:37,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:19:37,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250959452] [2022-01-10 18:19:37,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:19:37,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:19:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:19:38,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 18:19:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:19:38,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 18:19:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:19:38,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 18:19:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:19:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 18:19:38,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:19:38,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250959452] [2022-01-10 18:19:38,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250959452] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 18:19:38,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752761833] [2022-01-10 18:19:38,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:19:38,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:19:38,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:19:38,312 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 18:19:38,322 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 18:19:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:19:38,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 40 conjunts are in the unsatisfiable core [2022-01-10 18:19:38,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 18:19:54,468 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 18:19:54,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 18:20:00,905 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 18:20:00,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752761833] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 18:20:00,906 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 18:20:00,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 12] total 35 [2022-01-10 18:20:00,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220491657] [2022-01-10 18:20:00,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 18:20:00,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-10 18:20:00,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:20:00,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-10 18:20:00,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1066, Unknown=2, NotChecked=0, Total=1190 [2022-01-10 18:20:00,908 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 35 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 26 states have internal predecessors, (51), 9 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-10 18:20:03,134 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:20:07,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:20:07,613 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2022-01-10 18:20:07,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-10 18:20:07,614 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 26 states have internal predecessors, (51), 9 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 26 [2022-01-10 18:20:07,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:20:07,615 INFO L225 Difference]: With dead ends: 47 [2022-01-10 18:20:07,615 INFO L226 Difference]: Without dead ends: 27 [2022-01-10 18:20:07,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=237, Invalid=1923, Unknown=2, NotChecked=0, Total=2162 [2022-01-10 18:20:07,616 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 35 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-10 18:20:07,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 239 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 249 Invalid, 0 Unknown, 18 Unchecked, 1.8s Time] [2022-01-10 18:20:07,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-10 18:20:07,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-01-10 18:20:07,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 20 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-10 18:20:07,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2022-01-10 18:20:07,621 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 26 [2022-01-10 18:20:07,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:20:07,621 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2022-01-10 18:20:07,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 26 states have internal predecessors, (51), 9 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-10 18:20:07,621 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2022-01-10 18:20:07,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-10 18:20:07,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:20:07,622 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:20:07,654 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 18:20:07,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-10 18:20:07,823 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:20:07,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:20:07,824 INFO L85 PathProgramCache]: Analyzing trace with hash 2081207233, now seen corresponding path program 1 times [2022-01-10 18:20:07,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:20:07,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777153212] [2022-01-10 18:20:07,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:20:07,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:20:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:20:07,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 18:20:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:20:08,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 18:20:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:20:08,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 18:20:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:20:08,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 18:20:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:20:08,306 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 18:20:08,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:20:08,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777153212] [2022-01-10 18:20:08,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777153212] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 18:20:08,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814733991] [2022-01-10 18:20:08,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:20:08,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:20:08,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:20:08,312 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 18:20:08,346 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 18:20:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:20:08,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 54 conjunts are in the unsatisfiable core [2022-01-10 18:20:08,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 18:20:10,105 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 18:20:10,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 18:20:26,825 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 18:20:26,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814733991] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 18:20:26,825 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 18:20:26,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 15] total 45 [2022-01-10 18:20:26,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213756763] [2022-01-10 18:20:26,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 18:20:26,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-10 18:20:26,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:20:26,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-10 18:20:26,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1807, Unknown=0, NotChecked=0, Total=1980 [2022-01-10 18:20:26,828 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 45 states, 40 states have (on average 1.55) internal successors, (62), 33 states have internal predecessors, (62), 11 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (12), 12 states have call predecessors, (12), 11 states have call successors, (12) [2022-01-10 18:20:27,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:20:27,718 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2022-01-10 18:20:27,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-10 18:20:27,719 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 40 states have (on average 1.55) internal successors, (62), 33 states have internal predecessors, (62), 11 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (12), 12 states have call predecessors, (12), 11 states have call successors, (12) Word has length 33 [2022-01-10 18:20:27,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:20:27,720 INFO L225 Difference]: With dead ends: 35 [2022-01-10 18:20:27,720 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 18:20:27,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 35 SyntacticMatches, 8 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1095 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=363, Invalid=3297, Unknown=0, NotChecked=0, Total=3660 [2022-01-10 18:20:27,721 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 19 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:20:27,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 212 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 295 Invalid, 0 Unknown, 48 Unchecked, 0.2s Time] [2022-01-10 18:20:27,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 18:20:27,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 18:20:27,722 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 18:20:27,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 18:20:27,723 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2022-01-10 18:20:27,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:20:27,723 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 18:20:27,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 40 states have (on average 1.55) internal successors, (62), 33 states have internal predecessors, (62), 11 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (12), 12 states have call predecessors, (12), 11 states have call successors, (12) [2022-01-10 18:20:27,723 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 18:20:27,723 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 18:20:27,726 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 18:20:27,755 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 18:20:27,941 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,SelfDestructingSolverStorable6 [2022-01-10 18:20:27,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 18:20:27,965 INFO L858 garLoopResultBuilder]: For program point L34-1(line 34) no Hoare annotation was computed. [2022-01-10 18:20:27,965 INFO L861 garLoopResultBuilder]: At program point isEvenENTRY(lines 28 36) the Hoare annotation is: true [2022-01-10 18:20:27,965 INFO L858 garLoopResultBuilder]: For program point isEvenFINAL(lines 28 36) no Hoare annotation was computed. [2022-01-10 18:20:27,966 INFO L858 garLoopResultBuilder]: For program point L29(lines 29 35) no Hoare annotation was computed. [2022-01-10 18:20:27,966 INFO L858 garLoopResultBuilder]: For program point isEvenEXIT(lines 28 36) no Hoare annotation was computed. [2022-01-10 18:20:27,966 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 35) no Hoare annotation was computed. [2022-01-10 18:20:27,966 INFO L854 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (and (< 1 isEven_isEven_~nInt) (= |isEven_isEven_#in~nInt| isEven_isEven_~nInt) (< isEven_isEven_~nInt 4294967296)) [2022-01-10 18:20:27,966 INFO L861 garLoopResultBuilder]: At program point isOddENTRY(lines 18 26) the Hoare annotation is: true [2022-01-10 18:20:27,966 INFO L858 garLoopResultBuilder]: For program point L19(lines 19 25) no Hoare annotation was computed. [2022-01-10 18:20:27,966 INFO L858 garLoopResultBuilder]: For program point isOddFINAL(lines 18 26) no Hoare annotation was computed. [2022-01-10 18:20:27,966 INFO L858 garLoopResultBuilder]: For program point L21(lines 21 25) no Hoare annotation was computed. [2022-01-10 18:20:27,966 INFO L858 garLoopResultBuilder]: For program point isOddEXIT(lines 18 26) no Hoare annotation was computed. [2022-01-10 18:20:27,966 INFO L854 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= |isOdd_isOdd_#in~nInt| isOdd_isOdd_~nInt) (<= isOdd_isOdd_~nInt |isOdd_isOdd_#in~nInt|) (< 1 isOdd_isOdd_~nInt) (<= (div (+ isOdd_isOdd_~nInt 4294967295) 4294967296) 1)) [2022-01-10 18:20:27,967 INFO L858 garLoopResultBuilder]: For program point L24-1(line 24) no Hoare annotation was computed. [2022-01-10 18:20:27,967 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-01-10 18:20:27,967 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-01-10 18:20:27,967 INFO L858 garLoopResultBuilder]: For program point L41(lines 41 43) no Hoare annotation was computed. [2022-01-10 18:20:27,967 INFO L854 garLoopResultBuilder]: At program point L39(lines 39 51) the Hoare annotation is: (<= 0 |ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int|) [2022-01-10 18:20:27,967 INFO L854 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: (and (<= |ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| (* (mod |ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int| 2147483648) 2)) (<= 0 |ULTIMATE.start_ULTIMATE.start_main_~n~0#1Int|)) [2022-01-10 18:20:27,967 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-01-10 18:20:27,967 INFO L858 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2022-01-10 18:20:27,967 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-01-10 18:20:27,967 INFO L858 garLoopResultBuilder]: For program point L46(lines 46 50) no Hoare annotation was computed. [2022-01-10 18:20:27,967 INFO L858 garLoopResultBuilder]: For program point L49(line 49) no Hoare annotation was computed. [2022-01-10 18:20:27,968 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 49) no Hoare annotation was computed. [2022-01-10 18:20:27,970 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:20:27,972 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 18:20:27,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:20:27 BasicIcfg [2022-01-10 18:20:27,980 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 18:20:27,981 INFO L158 Benchmark]: Toolchain (without parser) took 52913.56ms. Allocated memory was 177.2MB in the beginning and 313.5MB in the end (delta: 136.3MB). Free memory was 127.1MB in the beginning and 171.0MB in the end (delta: -44.0MB). Peak memory consumption was 93.4MB. Max. memory is 8.0GB. [2022-01-10 18:20:27,981 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 177.2MB. Free memory is still 142.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 18:20:27,981 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.34ms. Allocated memory was 177.2MB in the beginning and 261.1MB in the end (delta: 83.9MB). Free memory was 126.9MB in the beginning and 238.9MB in the end (delta: -112.0MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. [2022-01-10 18:20:27,981 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.39ms. Allocated memory is still 261.1MB. Free memory was 238.9MB in the beginning and 237.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 18:20:27,982 INFO L158 Benchmark]: Boogie Preprocessor took 35.17ms. Allocated memory is still 261.1MB. Free memory was 237.3MB in the beginning and 236.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 18:20:27,982 INFO L158 Benchmark]: RCFGBuilder took 274.22ms. Allocated memory is still 261.1MB. Free memory was 236.3MB in the beginning and 225.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-10 18:20:27,982 INFO L158 Benchmark]: IcfgTransformer took 63.22ms. Allocated memory is still 261.1MB. Free memory was 225.3MB in the beginning and 222.1MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-01-10 18:20:27,983 INFO L158 Benchmark]: TraceAbstraction took 52237.02ms. Allocated memory was 261.1MB in the beginning and 313.5MB in the end (delta: 52.4MB). Free memory was 221.6MB in the beginning and 171.0MB in the end (delta: 50.5MB). Peak memory consumption was 102.5MB. Max. memory is 8.0GB. [2022-01-10 18:20:27,985 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 177.2MB. Free memory is still 142.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 268.34ms. Allocated memory was 177.2MB in the beginning and 261.1MB in the end (delta: 83.9MB). Free memory was 126.9MB in the beginning and 238.9MB in the end (delta: -112.0MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.39ms. Allocated memory is still 261.1MB. Free memory was 238.9MB in the beginning and 237.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.17ms. Allocated memory is still 261.1MB. Free memory was 237.3MB in the beginning and 236.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 274.22ms. Allocated memory is still 261.1MB. Free memory was 236.3MB in the beginning and 225.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 63.22ms. Allocated memory is still 261.1MB. Free memory was 225.3MB in the beginning and 222.1MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * TraceAbstraction took 52237.02ms. Allocated memory was 261.1MB in the beginning and 313.5MB in the end (delta: 52.4MB). Free memory was 221.6MB in the beginning and 171.0MB in the end (delta: 50.5MB). Peak memory consumption was 102.5MB. 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: 49]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 52.2s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 156 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 129 mSDsluCounter, 886 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 66 IncrementalHoareTripleChecker+Unchecked, 760 mSDsCounter, 48 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 850 IncrementalHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 48 mSolverCounterUnsat, 126 mSDtfsCounter, 850 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 242 GetRequests, 89 SyntacticMatches, 12 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1598 ImplicationChecksByTransitivity, 20.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=4, InterpolantAutomatonStates: 85, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 8 PreInvPairs, 10 NumberOfFragments, 43 HoareAnnotationTreeSize, 8 FomulaSimplifications, 63 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 42.8s InterpolantComputationTime, 203 NumberOfCodeBlocks, 203 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 251 ConstructedInterpolants, 10 QuantifiedInterpolants, 4286 SizeOfPredicates, 13 NumberOfNonLiveVariables, 349 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 18/55 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: 39]: Loop Invariant Derived loop invariant: NULL RESULT: Ultimate proved your program to be correct! [2022-01-10 18:20:28,004 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...