/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_10-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 05:59:23,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 05:59:23,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 05:59:23,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 05:59:23,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 05:59:23,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 05:59:23,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 05:59:23,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 05:59:23,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 05:59:23,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 05:59:23,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 05:59:23,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 05:59:23,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 05:59:23,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 05:59:23,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 05:59:23,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 05:59:23,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 05:59:23,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 05:59:23,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 05:59:23,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 05:59:23,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 05:59:23,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 05:59:23,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 05:59:23,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 05:59:23,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 05:59:23,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 05:59:23,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 05:59:23,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 05:59:23,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 05:59:23,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 05:59:23,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 05:59:23,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 05:59:23,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 05:59:23,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 05:59:23,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 05:59:23,111 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 05:59:23,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 05:59:23,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 05:59:23,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 05:59:23,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 05:59:23,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 05:59:23,120 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 05:59:23,152 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 05:59:23,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 05:59:23,152 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 05:59:23,152 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 05:59:23,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 05:59:23,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 05:59:23,154 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 05:59:23,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 05:59:23,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 05:59:23,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 05:59:23,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 05:59:23,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 05:59:23,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 05:59:23,155 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 05:59:23,155 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 05:59:23,155 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 05:59:23,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 05:59:23,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 05:59:23,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 05:59:23,155 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 05:59:23,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 05:59:23,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:59:23,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 05:59:23,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 05:59:23,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 05:59:23,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 05:59:23,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 05:59:23,156 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 05:59:23,157 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 05:59:23,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 05:59:23,157 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 05:59:23,157 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 05:59:23,157 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 05:59:23,158 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 05:59:23,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 05:59:23,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 05:59:23,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 05:59:23,405 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 05:59:23,405 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 05:59:23,407 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_10-1.c [2022-01-11 05:59:23,463 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53a2498c8/8d82fb8ad0bb40c8a5f431a874923260/FLAG2fc58d10e [2022-01-11 05:59:23,826 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 05:59:23,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_10-1.c [2022-01-11 05:59:23,836 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53a2498c8/8d82fb8ad0bb40c8a5f431a874923260/FLAG2fc58d10e [2022-01-11 05:59:23,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53a2498c8/8d82fb8ad0bb40c8a5f431a874923260 [2022-01-11 05:59:23,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 05:59:23,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 05:59:23,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 05:59:23,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 05:59:23,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 05:59:23,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:59:23" (1/1) ... [2022-01-11 05:59:23,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42ff57f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:59:23, skipping insertion in model container [2022-01-11 05:59:23,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:59:23" (1/1) ... [2022-01-11 05:59:23,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 05:59:23,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:59:24,062 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-simple/fibo_2calls_10-1.c[949,962] [2022-01-11 05:59:24,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:59:24,076 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 05:59:24,096 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-simple/fibo_2calls_10-1.c[949,962] [2022-01-11 05:59:24,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:59:24,111 INFO L208 MainTranslator]: Completed translation [2022-01-11 05:59:24,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:59:24 WrapperNode [2022-01-11 05:59:24,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 05:59:24,113 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 05:59:24,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 05:59:24,113 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 05:59:24,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:59:24" (1/1) ... [2022-01-11 05:59:24,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:59:24" (1/1) ... [2022-01-11 05:59:24,138 INFO L137 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-01-11 05:59:24,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 05:59:24,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 05:59:24,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 05:59:24,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 05:59:24,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:59:24" (1/1) ... [2022-01-11 05:59:24,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:59:24" (1/1) ... [2022-01-11 05:59:24,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:59:24" (1/1) ... [2022-01-11 05:59:24,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:59:24" (1/1) ... [2022-01-11 05:59:24,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:59:24" (1/1) ... [2022-01-11 05:59:24,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:59:24" (1/1) ... [2022-01-11 05:59:24,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:59:24" (1/1) ... [2022-01-11 05:59:24,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 05:59:24,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 05:59:24,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 05:59:24,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 05:59:24,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:59:24" (1/1) ... [2022-01-11 05:59:24,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:59:24,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:59:24,236 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 05:59:24,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 05:59:24,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 05:59:24,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 05:59:24,281 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-01-11 05:59:24,281 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-01-11 05:59:24,282 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-01-11 05:59:24,282 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-01-11 05:59:24,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 05:59:24,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 05:59:24,338 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 05:59:24,340 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 05:59:24,491 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 05:59:24,496 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 05:59:24,496 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 05:59:24,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:59:24 BoogieIcfgContainer [2022-01-11 05:59:24,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 05:59:24,498 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 05:59:24,499 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 05:59:24,511 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 05:59:24,514 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:59:24" (1/1) ... [2022-01-11 05:59:24,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:59:24 BasicIcfg [2022-01-11 05:59:24,622 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 05:59:24,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 05:59:24,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 05:59:24,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 05:59:24,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 05:59:23" (1/4) ... [2022-01-11 05:59:24,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652f6990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:59:24, skipping insertion in model container [2022-01-11 05:59:24,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:59:24" (2/4) ... [2022-01-11 05:59:24,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652f6990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:59:24, skipping insertion in model container [2022-01-11 05:59:24,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:59:24" (3/4) ... [2022-01-11 05:59:24,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652f6990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 05:59:24, skipping insertion in model container [2022-01-11 05:59:24,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:59:24" (4/4) ... [2022-01-11 05:59:24,629 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_2calls_10-1.cTransformedIcfg [2022-01-11 05:59:24,635 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 05:59:24,635 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 05:59:24,683 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 05:59:24,698 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 05:59:24,698 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 05:59:24,713 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-11 05:59:24,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-11 05:59:24,716 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:59:24,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:59:24,717 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:59:24,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:59:24,721 INFO L85 PathProgramCache]: Analyzing trace with hash 409070419, now seen corresponding path program 1 times [2022-01-11 05:59:24,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:59:24,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386410763] [2022-01-11 05:59:24,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:59:24,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:59:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:24,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 05:59:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:24,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:59:24,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:59:24,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386410763] [2022-01-11 05:59:24,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386410763] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:59:24,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:59:24,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:59:24,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623843696] [2022-01-11 05:59:25,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:59:25,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:59:25,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:59:25,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:59:25,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:59:25,027 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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) [2022-01-11 05:59:25,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:59:25,104 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2022-01-11 05:59:25,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:59:25,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 10 [2022-01-11 05:59:25,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:59:25,112 INFO L225 Difference]: With dead ends: 37 [2022-01-11 05:59:25,113 INFO L226 Difference]: Without dead ends: 25 [2022-01-11 05:59:25,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:59:25,118 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 14 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:59:25,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 82 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:59:25,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-11 05:59:25,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-01-11 05:59:25,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-01-11 05:59:25,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2022-01-11 05:59:25,149 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 10 [2022-01-11 05:59:25,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:59:25,150 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2022-01-11 05:59:25,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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) [2022-01-11 05:59:25,150 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2022-01-11 05:59:25,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 05:59:25,151 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:59:25,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:59:25,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 05:59:25,152 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:59:25,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:59:25,152 INFO L85 PathProgramCache]: Analyzing trace with hash 697486659, now seen corresponding path program 1 times [2022-01-11 05:59:25,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:59:25,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538655493] [2022-01-11 05:59:25,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:59:25,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:59:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:25,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 05:59:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:25,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:59:25,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:59:25,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538655493] [2022-01-11 05:59:25,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538655493] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:59:25,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:59:25,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:59:25,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933030842] [2022-01-11 05:59:25,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:59:25,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:59:25,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:59:25,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:59:25,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:59:25,217 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2022-01-11 05:59:25,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:59:25,265 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2022-01-11 05:59:25,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:59:25,265 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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 [2022-01-11 05:59:25,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:59:25,266 INFO L225 Difference]: With dead ends: 31 [2022-01-11 05:59:25,266 INFO L226 Difference]: Without dead ends: 27 [2022-01-11 05:59:25,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:59:25,268 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 8 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:59:25,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 72 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:59:25,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-11 05:59:25,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2022-01-11 05:59:25,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-01-11 05:59:25,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2022-01-11 05:59:25,276 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 11 [2022-01-11 05:59:25,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:59:25,276 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2022-01-11 05:59:25,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2022-01-11 05:59:25,276 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2022-01-11 05:59:25,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-11 05:59:25,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:59:25,277 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:59:25,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 05:59:25,278 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:59:25,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:59:25,278 INFO L85 PathProgramCache]: Analyzing trace with hash 63510830, now seen corresponding path program 1 times [2022-01-11 05:59:25,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:59:25,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069952094] [2022-01-11 05:59:25,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:59:25,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:59:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:25,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 05:59:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:25,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:25,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 05:59:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:25,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 05:59:25,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:59:25,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069952094] [2022-01-11 05:59:25,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069952094] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:59:25,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025739414] [2022-01-11 05:59:25,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:59:25,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:59:25,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:59:25,669 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:59:25,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 05:59:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:25,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-11 05:59:25,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:59:25,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 05:59:25,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 05:59:25,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025739414] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:59:25,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-11 05:59:25,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9 [2022-01-11 05:59:25,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206511983] [2022-01-11 05:59:25,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:59:25,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 05:59:25,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:59:25,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 05:59:25,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:59:25,975 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-11 05:59:26,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:59:26,130 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2022-01-11 05:59:26,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:59:26,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-01-11 05:59:26,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:59:26,132 INFO L225 Difference]: With dead ends: 36 [2022-01-11 05:59:26,132 INFO L226 Difference]: Without dead ends: 32 [2022-01-11 05:59:26,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-11 05:59:26,133 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 15 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:59:26,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 78 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:59:26,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-11 05:59:26,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2022-01-11 05:59:26,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-01-11 05:59:26,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2022-01-11 05:59:26,142 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 22 [2022-01-11 05:59:26,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:59:26,142 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2022-01-11 05:59:26,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-11 05:59:26,143 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2022-01-11 05:59:26,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-11 05:59:26,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:59:26,147 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] [2022-01-11 05:59:26,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 05:59:26,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:59:26,365 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:59:26,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:59:26,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1726490069, now seen corresponding path program 1 times [2022-01-11 05:59:26,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:59:26,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160712664] [2022-01-11 05:59:26,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:59:26,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:59:26,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:26,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 05:59:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:26,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:26,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 05:59:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:26,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 05:59:26,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:59:26,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160712664] [2022-01-11 05:59:26,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160712664] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:59:26,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:59:26,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 05:59:26,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201769525] [2022-01-11 05:59:26,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:59:26,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 05:59:26,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:59:26,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 05:59:26,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:59:26,511 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-11 05:59:26,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:59:26,625 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2022-01-11 05:59:26,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:59:26,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-01-11 05:59:26,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:59:26,630 INFO L225 Difference]: With dead ends: 41 [2022-01-11 05:59:26,631 INFO L226 Difference]: Without dead ends: 37 [2022-01-11 05:59:26,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:59:26,638 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:59:26,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 90 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:59:26,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-11 05:59:26,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2022-01-11 05:59:26,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2022-01-11 05:59:26,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 43 transitions. [2022-01-11 05:59:26,646 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 43 transitions. Word has length 23 [2022-01-11 05:59:26,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:59:26,646 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 43 transitions. [2022-01-11 05:59:26,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-11 05:59:26,646 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 43 transitions. [2022-01-11 05:59:26,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-11 05:59:26,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:59:26,648 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:59:26,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 05:59:26,648 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:59:26,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:59:26,648 INFO L85 PathProgramCache]: Analyzing trace with hash -312577904, now seen corresponding path program 1 times [2022-01-11 05:59:26,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:59:26,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540745741] [2022-01-11 05:59:26,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:59:26,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:59:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:26,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 05:59:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:26,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:26,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 05:59:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:26,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:27,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 05:59:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:27,064 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-11 05:59:27,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:59:27,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540745741] [2022-01-11 05:59:27,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540745741] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:59:27,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295599868] [2022-01-11 05:59:27,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:59:27,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:59:27,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:59:27,068 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:59:27,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 05:59:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:27,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-11 05:59:27,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:59:27,371 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-11 05:59:27,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:59:27,778 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-11 05:59:27,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295599868] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 05:59:27,779 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 05:59:27,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 20 [2022-01-11 05:59:27,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665469244] [2022-01-11 05:59:27,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 05:59:27,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-11 05:59:27,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:59:27,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-11 05:59:27,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-01-11 05:59:27,781 INFO L87 Difference]: Start difference. First operand 31 states and 43 transitions. Second operand has 20 states, 16 states have (on average 2.5625) internal successors, (41), 19 states have internal predecessors, (41), 9 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (12), 5 states have call predecessors, (12), 9 states have call successors, (12) [2022-01-11 05:59:28,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:59:28,265 INFO L93 Difference]: Finished difference Result 71 states and 111 transitions. [2022-01-11 05:59:28,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 05:59:28,266 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 2.5625) internal successors, (41), 19 states have internal predecessors, (41), 9 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (12), 5 states have call predecessors, (12), 9 states have call successors, (12) Word has length 34 [2022-01-11 05:59:28,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:59:28,267 INFO L225 Difference]: With dead ends: 71 [2022-01-11 05:59:28,268 INFO L226 Difference]: Without dead ends: 43 [2022-01-11 05:59:28,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2022-01-11 05:59:28,269 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 45 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 05:59:28,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 196 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 05:59:28,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-11 05:59:28,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2022-01-11 05:59:28,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (18), 9 states have call predecessors, (18), 7 states have call successors, (18) [2022-01-11 05:59:28,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2022-01-11 05:59:28,280 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 34 [2022-01-11 05:59:28,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:59:28,280 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2022-01-11 05:59:28,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 2.5625) internal successors, (41), 19 states have internal predecessors, (41), 9 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (12), 5 states have call predecessors, (12), 9 states have call successors, (12) [2022-01-11 05:59:28,281 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2022-01-11 05:59:28,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-11 05:59:28,283 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:59:28,283 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:59:28,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 05:59:28,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:59:28,508 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:59:28,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:59:28,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1907496380, now seen corresponding path program 1 times [2022-01-11 05:59:28,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:59:28,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647256196] [2022-01-11 05:59:28,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:59:28,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:59:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:28,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 05:59:28,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:28,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:28,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:28,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:59:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:28,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:59:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:28,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:28,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:59:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:28,737 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-11 05:59:28,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:59:28,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647256196] [2022-01-11 05:59:28,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647256196] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:59:28,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791357028] [2022-01-11 05:59:28,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:59:28,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:59:28,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:59:28,739 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:59:28,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 05:59:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:28,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-11 05:59:28,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:59:28,982 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-11 05:59:28,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:59:29,493 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-11 05:59:29,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791357028] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 05:59:29,494 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 05:59:29,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 9] total 19 [2022-01-11 05:59:29,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859809191] [2022-01-11 05:59:29,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 05:59:29,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-11 05:59:29,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:59:29,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-11 05:59:29,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2022-01-11 05:59:29,496 INFO L87 Difference]: Start difference. First operand 35 states and 50 transitions. Second operand has 19 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 17 states have internal predecessors, (47), 12 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (17), 11 states have call predecessors, (17), 12 states have call successors, (17) [2022-01-11 05:59:29,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:59:29,906 INFO L93 Difference]: Finished difference Result 105 states and 181 transitions. [2022-01-11 05:59:29,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-11 05:59:29,907 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 17 states have internal predecessors, (47), 12 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (17), 11 states have call predecessors, (17), 12 states have call successors, (17) Word has length 48 [2022-01-11 05:59:29,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:59:29,908 INFO L225 Difference]: With dead ends: 105 [2022-01-11 05:59:29,909 INFO L226 Difference]: Without dead ends: 58 [2022-01-11 05:59:29,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 97 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2022-01-11 05:59:29,910 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 42 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 05:59:29,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 183 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 05:59:29,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-01-11 05:59:29,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 45. [2022-01-11 05:59:29,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 30 states have internal predecessors, (31), 8 states have call successors, (8), 3 states have call predecessors, (8), 9 states have return successors, (24), 11 states have call predecessors, (24), 8 states have call successors, (24) [2022-01-11 05:59:29,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 63 transitions. [2022-01-11 05:59:29,921 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 63 transitions. Word has length 48 [2022-01-11 05:59:29,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:59:29,921 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 63 transitions. [2022-01-11 05:59:29,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 17 states have internal predecessors, (47), 12 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (17), 11 states have call predecessors, (17), 12 states have call successors, (17) [2022-01-11 05:59:29,921 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 63 transitions. [2022-01-11 05:59:29,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-11 05:59:29,923 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:59:29,923 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:59:29,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-11 05:59:30,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:59:30,143 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:59:30,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:59:30,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1166758002, now seen corresponding path program 2 times [2022-01-11 05:59:30,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:59:30,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482414095] [2022-01-11 05:59:30,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:59:30,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:59:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:30,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 05:59:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:30,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:30,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:30,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:30,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 05:59:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:30,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-11 05:59:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:30,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-11 05:59:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:30,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:30,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:30,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 05:59:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:30,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-11 05:59:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:30,625 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 18 proven. 41 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-01-11 05:59:30,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:59:30,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482414095] [2022-01-11 05:59:30,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482414095] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:59:30,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574369165] [2022-01-11 05:59:30,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 05:59:30,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:59:30,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:59:30,627 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:59:30,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-11 05:59:30,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 05:59:30,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 05:59:30,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-11 05:59:30,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:59:31,488 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 36 proven. 12 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-01-11 05:59:31,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:59:34,009 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 35 proven. 13 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-01-11 05:59:34,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574369165] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 05:59:34,010 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 05:59:34,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 26 [2022-01-11 05:59:34,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782785938] [2022-01-11 05:59:34,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 05:59:34,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-11 05:59:34,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:59:34,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-11 05:59:34,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2022-01-11 05:59:34,012 INFO L87 Difference]: Start difference. First operand 45 states and 63 transitions. Second operand has 26 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 25 states have internal predecessors, (56), 11 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (21), 11 states have call predecessors, (21), 11 states have call successors, (21) [2022-01-11 05:59:35,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:59:35,761 INFO L93 Difference]: Finished difference Result 111 states and 179 transitions. [2022-01-11 05:59:35,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-11 05:59:35,762 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 25 states have internal predecessors, (56), 11 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (21), 11 states have call predecessors, (21), 11 states have call successors, (21) Word has length 70 [2022-01-11 05:59:35,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:59:35,763 INFO L225 Difference]: With dead ends: 111 [2022-01-11 05:59:35,763 INFO L226 Difference]: Without dead ends: 69 [2022-01-11 05:59:35,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 147 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=179, Invalid=943, Unknown=0, NotChecked=0, Total=1122 [2022-01-11 05:59:35,765 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 75 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-11 05:59:35,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 255 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-11 05:59:35,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-01-11 05:59:35,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 56. [2022-01-11 05:59:35,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 36 states have internal predecessors, (39), 11 states have call successors, (11), 5 states have call predecessors, (11), 10 states have return successors, (28), 14 states have call predecessors, (28), 11 states have call successors, (28) [2022-01-11 05:59:35,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2022-01-11 05:59:35,775 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 70 [2022-01-11 05:59:35,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:59:35,775 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2022-01-11 05:59:35,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 25 states have internal predecessors, (56), 11 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (21), 11 states have call predecessors, (21), 11 states have call successors, (21) [2022-01-11 05:59:35,776 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2022-01-11 05:59:35,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-11 05:59:35,778 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:59:35,778 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:59:35,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-11 05:59:35,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:59:35,999 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:59:36,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:59:36,000 INFO L85 PathProgramCache]: Analyzing trace with hash 2090305454, now seen corresponding path program 1 times [2022-01-11 05:59:36,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:59:36,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011335348] [2022-01-11 05:59:36,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:59:36,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:59:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:36,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 05:59:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:36,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:36,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:36,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:36,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:59:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:36,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:59:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:36,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 05:59:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:36,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:36,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:36,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:59:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:36,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:59:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:36,261 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 17 proven. 36 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-11 05:59:36,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:59:36,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011335348] [2022-01-11 05:59:36,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011335348] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:59:36,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663434378] [2022-01-11 05:59:36,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:59:36,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:59:36,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:59:36,263 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:59:36,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-11 05:59:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:36,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-11 05:59:36,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:59:36,586 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 17 proven. 36 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-11 05:59:36,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:59:37,173 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 17 proven. 38 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-01-11 05:59:37,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663434378] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 05:59:37,173 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 05:59:37,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 18 [2022-01-11 05:59:37,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015446511] [2022-01-11 05:59:37,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 05:59:37,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-11 05:59:37,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:59:37,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-11 05:59:37,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-01-11 05:59:37,175 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand has 18 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 17 states have internal predecessors, (50), 10 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (18), 11 states have call predecessors, (18), 10 states have call successors, (18) [2022-01-11 05:59:37,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:59:37,467 INFO L93 Difference]: Finished difference Result 135 states and 219 transitions. [2022-01-11 05:59:37,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 05:59:37,468 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 17 states have internal predecessors, (50), 10 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (18), 11 states have call predecessors, (18), 10 states have call successors, (18) Word has length 74 [2022-01-11 05:59:37,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:59:37,470 INFO L225 Difference]: With dead ends: 135 [2022-01-11 05:59:37,470 INFO L226 Difference]: Without dead ends: 82 [2022-01-11 05:59:37,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 154 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-01-11 05:59:37,471 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 35 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:59:37,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 165 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:59:37,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-01-11 05:59:37,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2022-01-11 05:59:37,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 47 states have internal predecessors, (52), 14 states have call successors, (14), 6 states have call predecessors, (14), 14 states have return successors, (44), 20 states have call predecessors, (44), 14 states have call successors, (44) [2022-01-11 05:59:37,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 110 transitions. [2022-01-11 05:59:37,485 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 110 transitions. Word has length 74 [2022-01-11 05:59:37,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:59:37,485 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 110 transitions. [2022-01-11 05:59:37,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 17 states have internal predecessors, (50), 10 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (18), 11 states have call predecessors, (18), 10 states have call successors, (18) [2022-01-11 05:59:37,485 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 110 transitions. [2022-01-11 05:59:37,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-11 05:59:37,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:59:37,490 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:59:37,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-11 05:59:37,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:59:37,701 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:59:37,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:59:37,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1096975655, now seen corresponding path program 1 times [2022-01-11 05:59:37,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:59:37,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037778905] [2022-01-11 05:59:37,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:59:37,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:59:37,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:37,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 05:59:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:37,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:38,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:38,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:38,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:59:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:38,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:59:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:38,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:38,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:59:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:38,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-11 05:59:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:38,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:38,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:38,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:38,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:38,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:38,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:38,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:59:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:38,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:59:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:38,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-11 05:59:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:38,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-11 05:59:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:38,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:38,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:38,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:38,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:59:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:38,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:59:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:38,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 05:59:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:38,369 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 30 proven. 192 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2022-01-11 05:59:38,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:59:38,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037778905] [2022-01-11 05:59:38,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037778905] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:59:38,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759334404] [2022-01-11 05:59:38,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:59:38,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:59:38,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:59:38,371 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:59:38,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-11 05:59:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:38,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-11 05:59:38,590 INFO L286 TraceCheckSpWp]: Computing forward predicates...