/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/list-simple/sll2c_append_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 05:26:50,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 05:26:50,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 05:26:50,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 05:26:50,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 05:26:50,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 05:26:50,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 05:26:50,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 05:26:50,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 05:26:50,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 05:26:50,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 05:26:50,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 05:26:50,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 05:26:50,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 05:26:50,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 05:26:50,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 05:26:50,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 05:26:50,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 05:26:50,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 05:26:50,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 05:26:50,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 05:26:50,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 05:26:50,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 05:26:50,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 05:26:50,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 05:26:50,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 05:26:50,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 05:26:50,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 05:26:50,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 05:26:50,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 05:26:50,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 05:26:50,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 05:26:50,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 05:26:50,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 05:26:50,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 05:26:50,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 05:26:50,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 05:26:50,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 05:26:50,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 05:26:50,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 05:26:50,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 05:26:50,513 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 05:26:50,531 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 05:26:50,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 05:26:50,531 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 05:26:50,531 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 05:26:50,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 05:26:50,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 05:26:50,532 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 05:26:50,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 05:26:50,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 05:26:50,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 05:26:50,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 05:26:50,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 05:26:50,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 05:26:50,533 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 05:26:50,533 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 05:26:50,533 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 05:26:50,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 05:26:50,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 05:26:50,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 05:26:50,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 05:26:50,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 05:26:50,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:26:50,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 05:26:50,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 05:26:50,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 05:26:50,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 05:26:50,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 05:26:50,534 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 05:26:50,534 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 05:26:50,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 05:26:50,535 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 05:26:50,535 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 05:26:50,536 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 05:26:50,536 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 05:26:50,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 05:26:50,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 05:26:50,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 05:26:50,703 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 05:26:50,703 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 05:26:50,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_append_equal.i [2022-01-11 05:26:50,763 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/def6e23a6/ba527814c4654e15b2a8c19f2c16c21d/FLAGf77e593be [2022-01-11 05:26:51,176 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 05:26:51,176 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_append_equal.i [2022-01-11 05:26:51,187 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/def6e23a6/ba527814c4654e15b2a8c19f2c16c21d/FLAGf77e593be [2022-01-11 05:26:51,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/def6e23a6/ba527814c4654e15b2a8c19f2c16c21d [2022-01-11 05:26:51,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 05:26:51,201 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 05:26:51,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 05:26:51,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 05:26:51,204 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 05:26:51,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:26:51" (1/1) ... [2022-01-11 05:26:51,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d45937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:26:51, skipping insertion in model container [2022-01-11 05:26:51,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:26:51" (1/1) ... [2022-01-11 05:26:51,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 05:26:51,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:26:51,505 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_append_equal.i[24433,24446] [2022-01-11 05:26:51,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:26:51,514 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 05:26:51,549 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_append_equal.i[24433,24446] [2022-01-11 05:26:51,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:26:51,573 INFO L208 MainTranslator]: Completed translation [2022-01-11 05:26:51,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:26:51 WrapperNode [2022-01-11 05:26:51,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 05:26:51,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 05:26:51,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 05:26:51,576 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 05:26:51,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:26:51" (1/1) ... [2022-01-11 05:26:51,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:26:51" (1/1) ... [2022-01-11 05:26:51,633 INFO L137 Inliner]: procedures = 130, calls = 42, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 163 [2022-01-11 05:26:51,633 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 05:26:51,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 05:26:51,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 05:26:51,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 05:26:51,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:26:51" (1/1) ... [2022-01-11 05:26:51,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:26:51" (1/1) ... [2022-01-11 05:26:51,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:26:51" (1/1) ... [2022-01-11 05:26:51,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:26:51" (1/1) ... [2022-01-11 05:26:51,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:26:51" (1/1) ... [2022-01-11 05:26:51,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:26:51" (1/1) ... [2022-01-11 05:26:51,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:26:51" (1/1) ... [2022-01-11 05:26:51,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 05:26:51,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 05:26:51,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 05:26:51,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 05:26:51,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:26:51" (1/1) ... [2022-01-11 05:26:51,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:26:51,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:26:51,711 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 05:26:51,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 05:26:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-11 05:26:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-11 05:26:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 05:26:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-11 05:26:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-11 05:26:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-11 05:26:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-11 05:26:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-11 05:26:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-11 05:26:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 05:26:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 05:26:51,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 05:26:51,827 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 05:26:51,828 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 05:26:52,082 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 05:26:52,088 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 05:26:52,088 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-11 05:26:52,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:26:52 BoogieIcfgContainer [2022-01-11 05:26:52,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 05:26:52,090 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 05:26:52,090 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 05:26:52,094 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 05:26:52,096 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:26:52" (1/1) ... [2022-01-11 05:26:52,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:26:52 BasicIcfg [2022-01-11 05:26:52,171 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 05:26:52,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 05:26:52,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 05:26:52,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 05:26:52,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 05:26:51" (1/4) ... [2022-01-11 05:26:52,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fca5ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:26:52, skipping insertion in model container [2022-01-11 05:26:52,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:26:51" (2/4) ... [2022-01-11 05:26:52,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fca5ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:26:52, skipping insertion in model container [2022-01-11 05:26:52,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:26:52" (3/4) ... [2022-01-11 05:26:52,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fca5ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 05:26:52, skipping insertion in model container [2022-01-11 05:26:52,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:26:52" (4/4) ... [2022-01-11 05:26:52,176 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2c_append_equal.iTransformedIcfg [2022-01-11 05:26:52,180 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 05:26:52,180 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 05:26:52,208 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 05:26:52,213 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 05:26:52,214 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 05:26:52,222 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 35 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:26:52,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-11 05:26:52,226 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:26:52,226 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:26:52,226 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:26:52,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:26:52,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1511655859, now seen corresponding path program 1 times [2022-01-11 05:26:52,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:26:52,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587963260] [2022-01-11 05:26:52,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:26:52,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:26:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:26:52,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:26:52,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:26:52,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587963260] [2022-01-11 05:26:52,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587963260] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:26:52,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:26:52,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:26:52,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907509651] [2022-01-11 05:26:52,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:26:52,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 05:26:52,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:26:52,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 05:26:52,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:26:52,465 INFO L87 Difference]: Start difference. First operand has 36 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 35 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:26:52,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:26:52,482 INFO L93 Difference]: Finished difference Result 61 states and 85 transitions. [2022-01-11 05:26:52,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 05:26:52,486 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-11 05:26:52,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:26:52,492 INFO L225 Difference]: With dead ends: 61 [2022-01-11 05:26:52,492 INFO L226 Difference]: Without dead ends: 26 [2022-01-11 05:26:52,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:26:52,500 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:26:52,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:26:52,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-11 05:26:52,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-01-11 05:26:52,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:26:52,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2022-01-11 05:26:52,526 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 16 [2022-01-11 05:26:52,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:26:52,527 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-01-11 05:26:52,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:26:52,528 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-01-11 05:26:52,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-11 05:26:52,528 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:26:52,528 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:26:52,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 05:26:52,529 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:26:52,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:26:52,531 INFO L85 PathProgramCache]: Analyzing trace with hash -285295500, now seen corresponding path program 1 times [2022-01-11 05:26:52,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:26:52,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101815546] [2022-01-11 05:26:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:26:52,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:26:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:26:52,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:26:52,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:26:52,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101815546] [2022-01-11 05:26:52,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101815546] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:26:52,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:26:52,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-11 05:26:52,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781989844] [2022-01-11 05:26:52,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:26:52,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 05:26:52,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:26:52,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 05:26:52,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:26:52,965 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:26:53,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:26:53,184 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-01-11 05:26:53,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 05:26:53,185 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-11 05:26:53,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:26:53,185 INFO L225 Difference]: With dead ends: 34 [2022-01-11 05:26:53,186 INFO L226 Difference]: Without dead ends: 26 [2022-01-11 05:26:53,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-01-11 05:26:53,191 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 76 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:26:53,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 30 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:26:53,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-11 05:26:53,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-01-11 05:26:53,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:26:53,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-01-11 05:26:53,203 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 16 [2022-01-11 05:26:53,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:26:53,207 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-01-11 05:26:53,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:26:53,207 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-01-11 05:26:53,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-11 05:26:53,208 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:26:53,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:26:53,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 05:26:53,208 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:26:53,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:26:53,209 INFO L85 PathProgramCache]: Analyzing trace with hash -192203796, now seen corresponding path program 1 times [2022-01-11 05:26:53,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:26:53,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206868020] [2022-01-11 05:26:53,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:26:53,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:26:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:26:53,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:26:53,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:26:53,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206868020] [2022-01-11 05:26:53,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206868020] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:26:53,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:26:53,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:26:53,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591052801] [2022-01-11 05:26:53,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:26:53,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:26:53,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:26:53,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:26:53,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:26:53,344 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:26:53,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:26:53,354 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2022-01-11 05:26:53,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:26:53,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-11 05:26:53,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:26:53,357 INFO L225 Difference]: With dead ends: 44 [2022-01-11 05:26:53,357 INFO L226 Difference]: Without dead ends: 27 [2022-01-11 05:26:53,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:26:53,360 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 3 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:26:53,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 47 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:26:53,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-11 05:26:53,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-01-11 05:26:53,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:26:53,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-01-11 05:26:53,364 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 19 [2022-01-11 05:26:53,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:26:53,364 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-01-11 05:26:53,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:26:53,365 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-01-11 05:26:53,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-11 05:26:53,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:26:53,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:26:53,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 05:26:53,365 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:26:53,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:26:53,366 INFO L85 PathProgramCache]: Analyzing trace with hash -381048782, now seen corresponding path program 1 times [2022-01-11 05:26:53,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:26:53,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740557] [2022-01-11 05:26:53,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:26:53,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:26:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:26:54,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:26:54,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:26:54,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740557] [2022-01-11 05:26:54,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740557] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:26:54,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543106641] [2022-01-11 05:26:54,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:26:54,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:26:54,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:26:54,377 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:26:54,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 05:26:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:26:54,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 123 conjunts are in the unsatisfiable core [2022-01-11 05:26:54,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:26:54,687 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-11 05:26:54,688 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-01-11 05:26:54,866 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-11 05:26:54,866 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-11 05:26:54,991 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-11 05:26:55,076 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 05:26:55,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 05:26:55,088 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-01-11 05:26:55,209 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-11 05:26:55,209 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2022-01-11 05:26:55,214 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-01-11 05:26:55,328 INFO L353 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2022-01-11 05:26:55,329 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34 [2022-01-11 05:26:55,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 05:26:55,487 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-11 05:26:55,488 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-11 05:26:55,496 INFO L353 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-01-11 05:26:55,496 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 87 treesize of output 68 [2022-01-11 05:26:55,508 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-01-11 05:26:55,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 05:26:55,515 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 70 [2022-01-11 05:26:56,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:26:56,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:26:56,144 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_326 (Array Int Int)) (v_ArrVal_328 (Array Int Int)) (v_ArrVal_327 (Array Int Int)) (v_ArrVal_331 (Array Int Int)) (v_ArrVal_333 (Array Int Int))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offsetInt| |c_ULTIMATE.start_ULTIMATE.start_sll_circular_append_~last~1#1.baseInt| v_ArrVal_331) |c_ULTIMATE.start_ULTIMATE.start_sll_circular_append_~new_last~0#1.baseInt| v_ArrVal_333) |c_ULTIMATE.start_ULTIMATE.start_main_~#s~0#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_main_~#s~0#1.offsetInt|))) (or (= |c_ULTIMATE.start_ULTIMATE.start_main_~data~0#1Int| (select (select (store (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_sll_circular_append_~last~1#1.baseInt| v_ArrVal_328) |c_ULTIMATE.start_ULTIMATE.start_sll_circular_append_~new_last~0#1.baseInt| v_ArrVal_326) (select (select (store (store |c_#memory_$Pointer$.baseInt| |c_ULTIMATE.start_ULTIMATE.start_sll_circular_append_~last~1#1.baseInt| (store (select |c_#memory_$Pointer$.baseInt| |c_ULTIMATE.start_ULTIMATE.start_sll_circular_append_~last~1#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_sll_circular_append_~last~1#1.offsetInt| |c_ULTIMATE.start_ULTIMATE.start_sll_circular_append_~new_last~0#1.baseInt|)) |c_ULTIMATE.start_ULTIMATE.start_sll_circular_append_~new_last~0#1.baseInt| v_ArrVal_327) |c_ULTIMATE.start_ULTIMATE.start_main_~#s~0#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_main_~#s~0#1.offsetInt|)) (mod (+ 8 .cse0) 18446744073709551616))) (not (<= 0 .cse0))))) is different from false [2022-01-11 05:26:56,538 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_326 (Array Int Int)) (v_ArrVal_328 (Array Int Int)) (v_ArrVal_327 (Array Int Int)) (v_ArrVal_319 (Array Int Int)) (v_ArrVal_320 (Array Int Int)) (v_ArrVal_331 (Array Int Int)) (v_ArrVal_317 Int) (v_ArrVal_333 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$.baseInt| |c_ULTIMATE.start_ULTIMATE.start_node_create_~temp~0#1.baseInt| (store (store (select |c_#memory_$Pointer$.baseInt| |c_ULTIMATE.start_ULTIMATE.start_node_create_~temp~0#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_node_create_~temp~0#1.offsetInt| 0) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_node_create_~temp~0#1.offsetInt| 8) 18446744073709551616) v_ArrVal_317)))) (let ((.cse5 (store |c_#memory_$Pointer$.offsetInt| |c_ULTIMATE.start_ULTIMATE.start_node_create_~temp~0#1.baseInt| v_ArrVal_320)) (.cse0 (select (select .cse1 |c_ULTIMATE.start_ULTIMATE.start_sll_circular_append_~head#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_sll_circular_append_~head#1.offsetInt|))) (let ((.cse4 (select (select (store (store .cse5 .cse0 v_ArrVal_331) |c_ULTIMATE.start_ULTIMATE.start_node_create_~temp~0#1.baseInt| v_ArrVal_333) |c_ULTIMATE.start_ULTIMATE.start_main_~#s~0#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_main_~#s~0#1.offsetInt|)) (.cse2 (select .cse1 .cse0)) (.cse3 (select (select .cse5 |c_ULTIMATE.start_ULTIMATE.start_sll_circular_append_~head#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_sll_circular_append_~head#1.offsetInt|))) (or (= |c_ULTIMATE.start_ULTIMATE.start_main_~data~0#1Int| (select (select (store (store (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_node_create_~temp~0#1.baseInt| v_ArrVal_319) .cse0 v_ArrVal_328) |c_ULTIMATE.start_ULTIMATE.start_node_create_~temp~0#1.baseInt| v_ArrVal_326) (select (select (store (store .cse1 .cse0 (store .cse2 .cse3 |c_ULTIMATE.start_ULTIMATE.start_node_create_~temp~0#1.baseInt|)) |c_ULTIMATE.start_ULTIMATE.start_node_create_~temp~0#1.baseInt| v_ArrVal_327) |c_ULTIMATE.start_ULTIMATE.start_main_~#s~0#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_main_~#s~0#1.offsetInt|)) (mod (+ .cse4 8) 18446744073709551616))) (not (<= 0 .cse4)) (not (= (select .cse2 .cse3) .cse0)) (< .cse3 0)))))) is different from false [2022-01-11 05:26:56,679 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 9587 treesize of output 9399 [2022-01-11 05:26:56,728 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 9268 treesize of output 9220 [2022-01-11 05:26:56,790 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 9339 treesize of output 9247 [2022-01-11 05:26:56,813 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 9132 treesize of output 9036