/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:15:09,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:15:09,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:15:09,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 00:15:09,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 00:15:09,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 00:15:09,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 00:15:09,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 00:15:09,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 00:15:09,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 00:15:09,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 00:15:09,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 00:15:09,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:15:09,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:15:09,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:15:09,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:15:09,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:15:09,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:15:09,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:15:09,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:15:09,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:15:09,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:15:09,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:15:09,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:15:09,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 00:15:09,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 00:15:09,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 00:15:09,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 00:15:09,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 00:15:09,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 00:15:09,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 00:15:09,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 00:15:09,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 00:15:09,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 00:15:09,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 00:15:09,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 00:15:09,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 00:15:09,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 00:15:09,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:15:09,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:15:09,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:15:09,120 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:15:09,145 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:15:09,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:15:09,146 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:15:09,146 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:15:09,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:15:09,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:15:09,147 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:15:09,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:15:09,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:15:09,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:15:09,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:15:09,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:15:09,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:15:09,148 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:15:09,148 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:15:09,148 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:15:09,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:15:09,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:15:09,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:15:09,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:15:09,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:15:09,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:15:09,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:15:09,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:15:09,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:15:09,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:15:09,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:15:09,150 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:15:09,150 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:15:09,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:15:09,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:15:09,150 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:15:09,151 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:15:09,151 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:15:09,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:15:09,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:15:09,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:15:09,359 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:15:09,359 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:15:09,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2022-01-11 00:15:09,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0333f989/f0a9031043f247cea279f38b9ad9860c/FLAG7a60cdd97 [2022-01-11 00:15:09,737 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:15:09,738 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2022-01-11 00:15:09,744 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0333f989/f0a9031043f247cea279f38b9ad9860c/FLAG7a60cdd97 [2022-01-11 00:15:09,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0333f989/f0a9031043f247cea279f38b9ad9860c [2022-01-11 00:15:09,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:15:09,758 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:15:09,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:15:09,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:15:09,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:15:09,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:15:09" (1/1) ... [2022-01-11 00:15:09,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd906b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:15:09, skipping insertion in model container [2022-01-11 00:15:09,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:15:09" (1/1) ... [2022-01-11 00:15:09,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:15:09,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:15:09,925 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-with-pointer/simple-recursive.c[439,452] [2022-01-11 00:15:09,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:15:09,939 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:15:09,951 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-with-pointer/simple-recursive.c[439,452] [2022-01-11 00:15:09,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:15:09,966 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:15:09,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:15:09 WrapperNode [2022-01-11 00:15:09,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:15:09,967 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:15:09,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:15:09,968 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:15:09,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:15:09" (1/1) ... [2022-01-11 00:15:09,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:15:09" (1/1) ... [2022-01-11 00:15:09,990 INFO L137 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-01-11 00:15:09,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:15:09,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:15:09,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:15:09,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:15:09,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:15:09" (1/1) ... [2022-01-11 00:15:09,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:15:09" (1/1) ... [2022-01-11 00:15:10,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:15:09" (1/1) ... [2022-01-11 00:15:10,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:15:09" (1/1) ... [2022-01-11 00:15:10,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:15:09" (1/1) ... [2022-01-11 00:15:10,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:15:09" (1/1) ... [2022-01-11 00:15:10,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:15:09" (1/1) ... [2022-01-11 00:15:10,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:15:10,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:15:10,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:15:10,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:15:10,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:15:09" (1/1) ... [2022-01-11 00:15:10,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:15:10,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:15:10,047 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 00:15:10,065 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 00:15:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:15:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-01-11 00:15:10,080 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-01-11 00:15:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:15:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-11 00:15:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-11 00:15:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2022-01-11 00:15:10,081 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2022-01-11 00:15:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-11 00:15:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:15:10,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:15:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-11 00:15:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-11 00:15:10,144 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:15:10,145 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:15:10,276 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:15:10,280 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:15:10,280 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 00:15:10,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:15:10 BoogieIcfgContainer [2022-01-11 00:15:10,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:15:10,282 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:15:10,282 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:15:10,282 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:15:10,284 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:15:10" (1/1) ... [2022-01-11 00:15:10,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:15:10 BasicIcfg [2022-01-11 00:15:10,349 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:15:10,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:15:10,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:15:10,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:15:10,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:15:09" (1/4) ... [2022-01-11 00:15:10,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446110bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:15:10, skipping insertion in model container [2022-01-11 00:15:10,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:15:09" (2/4) ... [2022-01-11 00:15:10,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446110bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:15:10, skipping insertion in model container [2022-01-11 00:15:10,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:15:10" (3/4) ... [2022-01-11 00:15:10,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446110bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:15:10, skipping insertion in model container [2022-01-11 00:15:10,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:15:10" (4/4) ... [2022-01-11 00:15:10,354 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-recursive.cTransformedIcfg [2022-01-11 00:15:10,357 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:15:10,357 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:15:10,395 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:15:10,401 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 00:15:10,401 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:15:10,415 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-11 00:15:10,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-11 00:15:10,419 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:15:10,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:15:10,420 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:15:10,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:15:10,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1972517223, now seen corresponding path program 1 times [2022-01-11 00:15:10,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:15:10,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656847492] [2022-01-11 00:15:10,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:15:10,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:15:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:15:10,696 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 00:15:10,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:15:10,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656847492] [2022-01-11 00:15:10,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656847492] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:15:10,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:15:10,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:15:10,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600495537] [2022-01-11 00:15:10,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:15:10,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:15:10,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:15:10,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:15:10,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:15:10,720 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:15:10,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:15:10,772 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-01-11 00:15:10,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:15:10,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-01-11 00:15:10,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:15:10,778 INFO L225 Difference]: With dead ends: 33 [2022-01-11 00:15:10,779 INFO L226 Difference]: Without dead ends: 14 [2022-01-11 00:15:10,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 00:15:10,783 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:15:10,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 56 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:15:10,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-01-11 00:15:10,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2022-01-11 00:15:10,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:15:10,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-01-11 00:15:10,804 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2022-01-11 00:15:10,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:15:10,805 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-01-11 00:15:10,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:15:10,805 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-01-11 00:15:10,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-11 00:15:10,805 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:15:10,805 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:15:10,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:15:10,806 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:15:10,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:15:10,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1494089744, now seen corresponding path program 1 times [2022-01-11 00:15:10,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:15:10,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031671161] [2022-01-11 00:15:10,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:15:10,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:15:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:15:11,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:15:11,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:15:11,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031671161] [2022-01-11 00:15:11,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031671161] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:15:11,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660199152] [2022-01-11 00:15:11,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:15:11,069 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:15:11,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:15:11,075 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 00:15:11,081 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 00:15:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:15:11,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 48 conjunts are in the unsatisfiable core [2022-01-11 00:15:11,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:15:11,211 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-11 00:15:11,291 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-11 00:15:11,291 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2022-01-11 00:15:11,329 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-11 00:15:11,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:15:11,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:15:11,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:15:11,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660199152] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:15:11,676 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:15:11,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 23 [2022-01-11 00:15:11,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444612644] [2022-01-11 00:15:11,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:15:11,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-11 00:15:11,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:15:11,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-11 00:15:11,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-01-11 00:15:11,679 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 23 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 14 states have internal predecessors, (20), 7 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:15:12,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:15:12,058 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2022-01-11 00:15:12,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-11 00:15:12,059 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 14 states have internal predecessors, (20), 7 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-01-11 00:15:12,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:15:12,060 INFO L225 Difference]: With dead ends: 27 [2022-01-11 00:15:12,060 INFO L226 Difference]: Without dead ends: 24 [2022-01-11 00:15:12,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=691, Unknown=0, NotChecked=0, Total=812 [2022-01-11 00:15:12,061 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:15:12,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 42 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 00:15:12,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-01-11 00:15:12,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-01-11 00:15:12,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 7 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:15:12,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-01-11 00:15:12,066 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 12 [2022-01-11 00:15:12,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:15:12,067 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-01-11 00:15:12,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 14 states have internal predecessors, (20), 7 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:15:12,067 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-01-11 00:15:12,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-11 00:15:12,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:15:12,070 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2022-01-11 00:15:12,090 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 00:15:12,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:15:12,287 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:15:12,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:15:12,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1655225744, now seen corresponding path program 2 times [2022-01-11 00:15:12,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:15:12,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628001078] [2022-01-11 00:15:12,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:15:12,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:15:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:15:12,764 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:15:12,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:15:12,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628001078] [2022-01-11 00:15:12,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628001078] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:15:12,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24977037] [2022-01-11 00:15:12,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 00:15:12,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:15:12,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:15:12,766 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 00:15:12,767 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 00:15:12,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 00:15:12,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 00:15:12,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 102 conjunts are in the unsatisfiable core [2022-01-11 00:15:12,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:15:12,970 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-11 00:15:13,064 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-11 00:15:13,065 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2022-01-11 00:15:13,301 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-11 00:15:13,301 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 44 [2022-01-11 00:15:13,671 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-11 00:15:13,672 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 75 [2022-01-11 00:15:18,181 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 92 [2022-01-11 00:15:18,227 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:15:18,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:15:32,085 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:15:32,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24977037] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:15:32,086 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:15:32,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 18] total 47 [2022-01-11 00:15:32,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144829377] [2022-01-11 00:15:32,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:15:32,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-11 00:15:32,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:15:32,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-11 00:15:32,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1990, Unknown=1, NotChecked=0, Total=2162 [2022-01-11 00:15:32,088 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 47 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 26 states have internal predecessors, (39), 20 states have call successors, (21), 21 states have call predecessors, (21), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:15:33,948 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-11 00:16:15,601 WARN L228 SmtUtils]: Spent 20.87s on a formula simplification. DAG size of input: 77 DAG size of output: 65 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-11 00:16:26,262 WARN L228 SmtUtils]: Spent 8.45s on a formula simplification. DAG size of input: 42 DAG size of output: 30 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)