/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-with-pointer/simple-recursive.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:03:08,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:03:08,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:03:08,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:03:08,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:03:08,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:03:08,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:03:08,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:03:08,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:03:08,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:03:08,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:03:08,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:03:08,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:03:08,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:03:08,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:03:08,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:03:08,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:03:08,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:03:08,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:03:08,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:03:08,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:03:08,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:03:08,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:03:08,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:03:08,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:03:08,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:03:08,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:03:08,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:03:08,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:03:08,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:03:08,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:03:08,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:03:08,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:03:08,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:03:08,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:03:08,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:03:08,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:03:08,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:03:08,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:03:08,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:03:08,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:03:08,194 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 06:03:08,219 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:03:08,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:03:08,220 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:03:08,220 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:03:08,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:03:08,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:03:08,221 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:03:08,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:03:08,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:03:08,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:03:08,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:03:08,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:03:08,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:03:08,222 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:03:08,222 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:03:08,222 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:03:08,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:03:08,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:03:08,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:03:08,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:03:08,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:03:08,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:03:08,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:03:08,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:03:08,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:03:08,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:03:08,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:03:08,224 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:03:08,224 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:03:08,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:03:08,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:03:08,225 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:03:08,225 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:03:08,225 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:03:08,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:03:08,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:03:08,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:03:08,488 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:03:08,490 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:03:08,492 INFO L432 ainManager$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 06:03:08,560 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4634cb9c0/2c75f62dac6f4c6d998266416d41db8a/FLAGf11228640 [2022-01-11 06:03:08,945 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:03:08,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2022-01-11 06:03:08,950 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4634cb9c0/2c75f62dac6f4c6d998266416d41db8a/FLAGf11228640 [2022-01-11 06:03:08,959 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4634cb9c0/2c75f62dac6f4c6d998266416d41db8a [2022-01-11 06:03:08,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:03:08,964 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:03:08,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:03:08,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:03:08,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:03:08,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:03:08" (1/1) ... [2022-01-11 06:03:08,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45e4f5c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:03:08, skipping insertion in model container [2022-01-11 06:03:08,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:03:08" (1/1) ... [2022-01-11 06:03:08,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:03:08,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:03:09,106 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 06:03:09,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:03:09,131 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:03:09,149 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 06:03:09,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:03:09,168 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:03:09,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:03:09 WrapperNode [2022-01-11 06:03:09,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:03:09,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:03:09,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:03:09,170 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:03:09,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:03:09" (1/1) ... [2022-01-11 06:03:09,182 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:03:09" (1/1) ... [2022-01-11 06:03:09,200 INFO L137 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-01-11 06:03:09,201 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:03:09,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:03:09,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:03:09,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:03:09,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:03:09" (1/1) ... [2022-01-11 06:03:09,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:03:09" (1/1) ... [2022-01-11 06:03:09,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:03:09" (1/1) ... [2022-01-11 06:03:09,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:03:09" (1/1) ... [2022-01-11 06:03:09,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:03:09" (1/1) ... [2022-01-11 06:03:09,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:03:09" (1/1) ... [2022-01-11 06:03:09,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:03:09" (1/1) ... [2022-01-11 06:03:09,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:03:09,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:03:09,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:03:09,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:03:09,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:03:09" (1/1) ... [2022-01-11 06:03:09,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:03:09,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:03:09,248 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 06:03:09,249 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 06:03:09,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:03:09,274 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-01-11 06:03:09,275 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-01-11 06:03:09,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:03:09,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-11 06:03:09,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-11 06:03:09,275 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2022-01-11 06:03:09,275 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2022-01-11 06:03:09,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-11 06:03:09,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:03:09,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:03:09,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-11 06:03:09,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-11 06:03:09,383 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:03:09,385 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:03:09,544 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:03:09,556 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:03:09,556 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:03:09,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:03:09 BoogieIcfgContainer [2022-01-11 06:03:09,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:03:09,559 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:03:09,559 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:03:09,561 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:03:09,564 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:03:09" (1/1) ... [2022-01-11 06:03:09,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:03:09 BasicIcfg [2022-01-11 06:03:09,670 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:03:09,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:03:09,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:03:09,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:03:09,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:03:08" (1/4) ... [2022-01-11 06:03:09,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1047748a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:03:09, skipping insertion in model container [2022-01-11 06:03:09,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:03:09" (2/4) ... [2022-01-11 06:03:09,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1047748a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:03:09, skipping insertion in model container [2022-01-11 06:03:09,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:03:09" (3/4) ... [2022-01-11 06:03:09,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1047748a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:03:09, skipping insertion in model container [2022-01-11 06:03:09,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:03:09" (4/4) ... [2022-01-11 06:03:09,678 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-recursive.cTransformedIcfg [2022-01-11 06:03:09,683 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:03:09,683 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:03:09,741 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:03:09,752 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 06:03:09,753 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:03:09,767 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 06:03:09,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-11 06:03:09,771 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:03:09,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:03:09,772 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:03:09,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:03:09,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1972517223, now seen corresponding path program 1 times [2022-01-11 06:03:09,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:03:09,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162922690] [2022-01-11 06:03:09,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:03:09,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:03:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:03:10,112 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 06:03:10,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:03:10,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162922690] [2022-01-11 06:03:10,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162922690] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:03:10,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:03:10,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:03:10,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906847457] [2022-01-11 06:03:10,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:03:10,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:03:10,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:03:10,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:03:10,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:03:10,153 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 06:03:10,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:03:10,241 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-01-11 06:03:10,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:03:10,245 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 06:03:10,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:03:10,256 INFO L225 Difference]: With dead ends: 33 [2022-01-11 06:03:10,256 INFO L226 Difference]: Without dead ends: 14 [2022-01-11 06:03:10,259 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 06:03:10,262 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 06:03:10,263 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 06:03:10,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-01-11 06:03:10,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2022-01-11 06:03:10,288 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 06:03:10,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-01-11 06:03:10,290 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2022-01-11 06:03:10,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:03:10,291 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-01-11 06:03:10,291 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 06:03:10,291 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-01-11 06:03:10,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-11 06:03:10,292 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:03:10,292 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:03:10,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:03:10,292 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:03:10,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:03:10,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1494089744, now seen corresponding path program 1 times [2022-01-11 06:03:10,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:03:10,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534440123] [2022-01-11 06:03:10,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:03:10,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:03:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:03:10,572 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 06:03:10,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:03:10,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534440123] [2022-01-11 06:03:10,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534440123] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 06:03:10,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748304612] [2022-01-11 06:03:10,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:03:10,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 06:03:10,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:03:10,576 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 06:03:10,577 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 06:03:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:03:10,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 48 conjunts are in the unsatisfiable core [2022-01-11 06:03:10,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 06:03:10,759 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 06:03:10,889 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-11 06:03:10,890 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 06:03:10,996 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 06:03:11,015 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 06:03:11,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 06:03:11,422 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 06:03:11,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748304612] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 06:03:11,423 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 06:03:11,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 23 [2022-01-11 06:03:11,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642616307] [2022-01-11 06:03:11,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 06:03:11,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-11 06:03:11,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:03:11,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-11 06:03:11,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-01-11 06:03:11,426 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 06:03:11,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:03:11,808 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2022-01-11 06:03:11,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-11 06:03:11,809 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 06:03:11,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:03:11,810 INFO L225 Difference]: With dead ends: 27 [2022-01-11 06:03:11,810 INFO L226 Difference]: Without dead ends: 24 [2022-01-11 06:03:11,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=121, Invalid=691, Unknown=0, NotChecked=0, Total=812 [2022-01-11 06:03:11,812 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 06:03:11,812 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 06:03:11,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-01-11 06:03:11,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-01-11 06:03:11,818 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 06:03:11,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-01-11 06:03:11,819 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 12 [2022-01-11 06:03:11,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:03:11,819 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-01-11 06:03:11,819 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 06:03:11,820 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-01-11 06:03:11,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-11 06:03:11,820 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:03:11,820 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2022-01-11 06:03:11,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-11 06:03:12,047 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 06:03:12,048 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:03:12,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:03:12,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1655225744, now seen corresponding path program 2 times [2022-01-11 06:03:12,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:03:12,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475726752] [2022-01-11 06:03:12,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:03:12,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:03:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:03:12,611 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 06:03:12,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:03:12,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475726752] [2022-01-11 06:03:12,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475726752] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 06:03:12,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844519187] [2022-01-11 06:03:12,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 06:03:12,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 06:03:12,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:03:12,616 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 06:03:12,642 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 06:03:12,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 06:03:12,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 06:03:12,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 102 conjunts are in the unsatisfiable core [2022-01-11 06:03:12,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 06:03:12,853 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 06:03:13,006 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-11 06:03:13,007 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 06:03:13,286 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-11 06:03:13,287 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 06:03:13,737 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-11 06:03:13,738 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 06:03:18,362 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 06:03:18,425 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 06:03:18,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 06:03:33,239 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 06:03:33,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844519187] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 06:03:33,240 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 06:03:33,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 18] total 47 [2022-01-11 06:03:33,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210826747] [2022-01-11 06:03:33,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 06:03:33,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-11 06:03:33,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:03:33,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-11 06:03:33,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1990, Unknown=1, NotChecked=0, Total=2162 [2022-01-11 06:03:33,243 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 06:04:10,126 WARN L228 SmtUtils]: Spent 7.57s 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) [2022-01-11 06:04:23,865 WARN L228 SmtUtils]: Spent 12.20s 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)