/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:35:16,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:35:16,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:35:16,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:35:16,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:35:16,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:35:16,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:35:16,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:35:16,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:35:16,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:35:16,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:35:16,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:35:16,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:35:16,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:35:16,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:35:16,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:35:16,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:35:16,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:35:16,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:35:16,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:35:16,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:35:16,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:35:16,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:35:16,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:35:16,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 12:35:16,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:35:16,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:35:16,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:35:16,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:35:16,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:35:16,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:35:16,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:35:16,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:35:16,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:35:16,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:35:16,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:35:16,538 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:35:16,559 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:35:16,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:35:16,559 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:35:16,559 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:35:16,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:35:16,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:35:16,560 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:35:16,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:35:16,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:35:16,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:35:16,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:35:16,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:35:16,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:35:16,561 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:35:16,561 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:35:16,561 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:35:16,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:35:16,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:35:16,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:35:16,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:35:16,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:35:16,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:35:16,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:35:16,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:35:16,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:35:16,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:35:16,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:35:16,562 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:35:16,563 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:35:16,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:35:16,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:35:16,563 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:35:16,563 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:35:16,563 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:35:16,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:35:16,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:35:16,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:35:16,789 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:35:16,789 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:35:16,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2022-01-10 12:35:16,835 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e59abce8/c973e250e11f42dbba8af55d4d4477ad/FLAGbdc418998 [2022-01-10 12:35:17,226 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:35:17,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2022-01-10 12:35:17,234 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e59abce8/c973e250e11f42dbba8af55d4d4477ad/FLAGbdc418998 [2022-01-10 12:35:17,245 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e59abce8/c973e250e11f42dbba8af55d4d4477ad [2022-01-10 12:35:17,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:35:17,249 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:35:17,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:35:17,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:35:17,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:35:17,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:35:17" (1/1) ... [2022-01-10 12:35:17,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@615d00de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:17, skipping insertion in model container [2022-01-10 12:35:17,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:35:17" (1/1) ... [2022-01-10 12:35:17,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:35:17,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:35:17,386 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] [2022-01-10 12:35:17,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:35:17,398 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:35:17,406 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] [2022-01-10 12:35:17,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:35:17,416 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:35:17,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:17 WrapperNode [2022-01-10 12:35:17,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:35:17,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:35:17,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:35:17,417 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:35:17,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:17" (1/1) ... [2022-01-10 12:35:17,427 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:17" (1/1) ... [2022-01-10 12:35:17,436 INFO L137 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-01-10 12:35:17,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:35:17,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:35:17,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:35:17,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:35:17,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:17" (1/1) ... [2022-01-10 12:35:17,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:17" (1/1) ... [2022-01-10 12:35:17,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:17" (1/1) ... [2022-01-10 12:35:17,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:17" (1/1) ... [2022-01-10 12:35:17,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:17" (1/1) ... [2022-01-10 12:35:17,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:17" (1/1) ... [2022-01-10 12:35:17,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:17" (1/1) ... [2022-01-10 12:35:17,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:35:17,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:35:17,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:35:17,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:35:17,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:17" (1/1) ... [2022-01-10 12:35:17,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:35:17,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:35:17,477 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 12:35:17,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 12:35:17,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:35:17,514 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-01-10 12:35:17,514 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-01-10 12:35:17,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:35:17,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 12:35:17,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 12:35:17,514 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2022-01-10 12:35:17,514 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2022-01-10 12:35:17,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 12:35:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:35:17,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:35:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 12:35:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 12:35:17,558 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:35:17,559 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:35:17,693 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:35:17,697 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:35:17,697 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 12:35:17,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:35:17 BoogieIcfgContainer [2022-01-10 12:35:17,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:35:17,699 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:35:17,699 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:35:17,703 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:35:17,705 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:35:17" (1/1) ... [2022-01-10 12:35:17,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:35:17 BasicIcfg [2022-01-10 12:35:17,772 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:35:17,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:35:17,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:35:17,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:35:17,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:35:17" (1/4) ... [2022-01-10 12:35:17,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321ff8d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:35:17, skipping insertion in model container [2022-01-10 12:35:17,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:17" (2/4) ... [2022-01-10 12:35:17,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321ff8d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:35:17, skipping insertion in model container [2022-01-10 12:35:17,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:35:17" (3/4) ... [2022-01-10 12:35:17,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321ff8d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:35:17, skipping insertion in model container [2022-01-10 12:35:17,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:35:17" (4/4) ... [2022-01-10 12:35:17,777 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-recursive.cTransformedIcfg [2022-01-10 12:35:17,780 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:35:17,780 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 12:35:17,830 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:35:17,841 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 12:35:17,842 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 12:35:17,853 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) [2022-01-10 12:35:17,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-10 12:35:17,857 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:35:17,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:35:17,857 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:35:17,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:35:17,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1972517223, now seen corresponding path program 1 times [2022-01-10 12:35:17,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:35:17,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101778162] [2022-01-10 12:35:17,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:35:17,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:35:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:35:18,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:35:18,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:35:18,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101778162] [2022-01-10 12:35:18,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101778162] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:35:18,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:35:18,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:35:18,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472022700] [2022-01-10 12:35:18,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:35:18,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:35:18,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:35:18,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:35:18,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:35:18,226 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) [2022-01-10 12:35:18,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:35:18,309 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-01-10 12:35:18,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:35:18,311 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 [2022-01-10 12:35:18,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:35:18,315 INFO L225 Difference]: With dead ends: 33 [2022-01-10 12:35:18,315 INFO L226 Difference]: Without dead ends: 14 [2022-01-10 12:35:18,317 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 [2022-01-10 12:35:18,319 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, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:35:18,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 56 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:35:18,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-01-10 12:35:18,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2022-01-10 12:35:18,341 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) [2022-01-10 12:35:18,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-01-10 12:35:18,343 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2022-01-10 12:35:18,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:35:18,344 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-01-10 12:35:18,344 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) [2022-01-10 12:35:18,344 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-01-10 12:35:18,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 12:35:18,345 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:35:18,345 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:35:18,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:35:18,345 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:35:18,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:35:18,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1494089744, now seen corresponding path program 1 times [2022-01-10 12:35:18,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:35:18,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19532637] [2022-01-10 12:35:18,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:35:18,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:35:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:35:18,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:35:18,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:35:18,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19532637] [2022-01-10 12:35:18,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19532637] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:35:18,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175700318] [2022-01-10 12:35:18,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:35:18,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:35:18,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:35:18,580 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:35:18,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 12:35:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:35:18,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 48 conjunts are in the unsatisfiable core [2022-01-10 12:35:18,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:35:18,721 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 [2022-01-10 12:35:18,830 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 12:35:18,831 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 [2022-01-10 12:35:18,869 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 [2022-01-10 12:35:18,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:35:18,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:35:19,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:35:19,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175700318] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 12:35:19,327 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 12:35:19,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 23 [2022-01-10 12:35:19,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62534975] [2022-01-10 12:35:19,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 12:35:19,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-10 12:35:19,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:35:19,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-10 12:35:19,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-01-10 12:35:19,329 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) [2022-01-10 12:35:19,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:35:19,651 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2022-01-10 12:35:19,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 12:35:19,652 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 [2022-01-10 12:35:19,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:35:19,653 INFO L225 Difference]: With dead ends: 27 [2022-01-10 12:35:19,653 INFO L226 Difference]: Without dead ends: 24 [2022-01-10 12:35:19,654 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 [2022-01-10 12:35:19,655 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 [2022-01-10 12:35:19,655 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] [2022-01-10 12:35:19,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-01-10 12:35:19,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-01-10 12:35:19,659 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) [2022-01-10 12:35:19,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-01-10 12:35:19,660 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 12 [2022-01-10 12:35:19,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:35:19,660 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-01-10 12:35:19,660 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) [2022-01-10 12:35:19,660 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-01-10 12:35:19,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 12:35:19,661 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:35:19,661 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2022-01-10 12:35:19,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 12:35:19,866 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 [2022-01-10 12:35:19,866 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:35:19,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:35:19,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1655225744, now seen corresponding path program 2 times [2022-01-10 12:35:19,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:35:19,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496149128] [2022-01-10 12:35:19,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:35:19,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:35:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:35:20,377 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:35:20,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:35:20,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496149128] [2022-01-10 12:35:20,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496149128] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:35:20,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379844451] [2022-01-10 12:35:20,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 12:35:20,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:35:20,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:35:20,379 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:35:20,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 12:35:20,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 12:35:20,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 12:35:20,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 102 conjunts are in the unsatisfiable core [2022-01-10 12:35:20,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:35:20,596 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 [2022-01-10 12:35:20,718 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 12:35:20,719 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 [2022-01-10 12:35:20,950 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 12:35:20,950 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 [2022-01-10 12:35:21,314 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 12:35:21,315 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 [2022-01-10 12:35:25,780 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 [2022-01-10 12:35:25,825 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:35:25,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:35:44,058 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:35:44,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379844451] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 12:35:44,058 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 12:35:44,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 18] total 47 [2022-01-10 12:35:44,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40037407] [2022-01-10 12:35:44,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 12:35:44,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-10 12:35:44,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:35:44,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-10 12:35:44,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1990, Unknown=1, NotChecked=0, Total=2162 [2022-01-10 12:35:44,061 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) [2022-01-10 12:36:20,178 WARN L228 SmtUtils]: Spent 7.11s 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) [2022-01-10 12:36:31,248 WARN L228 SmtUtils]: Spent 8.09s 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)