./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/list-simple/dll2c_append_equal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/list-simple/dll2c_append_equal.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 208d04089fa2c50848123d29dd18b6b2021c1b591464bd422fd10955aaeec7fc --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-15 23:55:27,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 23:55:27,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 23:55:28,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 23:55:28,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 23:55:28,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 23:55:28,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 23:55:28,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 23:55:28,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 23:55:28,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 23:55:28,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 23:55:28,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 23:55:28,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 23:55:28,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 23:55:28,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 23:55:28,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 23:55:28,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 23:55:28,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 23:55:28,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 23:55:28,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 23:55:28,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 23:55:28,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 23:55:28,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 23:55:28,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 23:55:28,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 23:55:28,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 23:55:28,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 23:55:28,065 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 23:55:28,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 23:55:28,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 23:55:28,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 23:55:28,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 23:55:28,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 23:55:28,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 23:55:28,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 23:55:28,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 23:55:28,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 23:55:28,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 23:55:28,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 23:55:28,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 23:55:28,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 23:55:28,072 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 23:55:28,098 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 23:55:28,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 23:55:28,099 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 23:55:28,099 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 23:55:28,100 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 23:55:28,100 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 23:55:28,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 23:55:28,100 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 23:55:28,100 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 23:55:28,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 23:55:28,101 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 23:55:28,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 23:55:28,102 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 23:55:28,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 23:55:28,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 23:55:28,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 23:55:28,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 23:55:28,102 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 23:55:28,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 23:55:28,103 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 23:55:28,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 23:55:28,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 23:55:28,103 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 23:55:28,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 23:55:28,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:55:28,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 23:55:28,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 23:55:28,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 23:55:28,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 23:55:28,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 23:55:28,104 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 23:55:28,104 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 23:55:28,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 23:55:28,105 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 23:55:28,105 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 208d04089fa2c50848123d29dd18b6b2021c1b591464bd422fd10955aaeec7fc [2021-12-15 23:55:28,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 23:55:28,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 23:55:28,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 23:55:28,317 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 23:55:28,328 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 23:55:28,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/dll2c_append_equal.i [2021-12-15 23:55:28,373 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53b56974c/2ce6cc8b1d5e4b45933eea9658591127/FLAG0a5262b37 [2021-12-15 23:55:28,837 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 23:55:28,843 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2c_append_equal.i [2021-12-15 23:55:28,858 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53b56974c/2ce6cc8b1d5e4b45933eea9658591127/FLAG0a5262b37 [2021-12-15 23:55:29,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53b56974c/2ce6cc8b1d5e4b45933eea9658591127 [2021-12-15 23:55:29,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 23:55:29,164 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 23:55:29,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 23:55:29,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 23:55:29,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 23:55:29,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:55:29" (1/1) ... [2021-12-15 23:55:29,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432c0672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:29, skipping insertion in model container [2021-12-15 23:55:29,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:55:29" (1/1) ... [2021-12-15 23:55:29,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 23:55:29,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 23:55:29,392 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2c_append_equal.i[24585,24598] [2021-12-15 23:55:29,394 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:55:29,399 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 23:55:29,456 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2c_append_equal.i[24585,24598] [2021-12-15 23:55:29,457 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:55:29,481 INFO L208 MainTranslator]: Completed translation [2021-12-15 23:55:29,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:29 WrapperNode [2021-12-15 23:55:29,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 23:55:29,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 23:55:29,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 23:55:29,483 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 23:55:29,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:29" (1/1) ... [2021-12-15 23:55:29,510 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:29" (1/1) ... [2021-12-15 23:55:29,533 INFO L137 Inliner]: procedures = 127, calls = 47, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 134 [2021-12-15 23:55:29,533 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 23:55:29,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 23:55:29,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 23:55:29,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 23:55:29,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:29" (1/1) ... [2021-12-15 23:55:29,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:29" (1/1) ... [2021-12-15 23:55:29,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:29" (1/1) ... [2021-12-15 23:55:29,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:29" (1/1) ... [2021-12-15 23:55:29,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:29" (1/1) ... [2021-12-15 23:55:29,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:29" (1/1) ... [2021-12-15 23:55:29,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:29" (1/1) ... [2021-12-15 23:55:29,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 23:55:29,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 23:55:29,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 23:55:29,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 23:55:29,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:29" (1/1) ... [2021-12-15 23:55:29,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:55:29,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:55:29,590 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) [2021-12-15 23:55:29,605 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 [2021-12-15 23:55:29,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 23:55:29,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 23:55:29,630 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-12-15 23:55:29,630 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-12-15 23:55:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 23:55:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 23:55:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 23:55:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 23:55:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 23:55:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 23:55:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-15 23:55:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 23:55:29,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 23:55:29,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 23:55:29,698 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 23:55:29,699 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 23:55:29,911 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 23:55:29,915 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 23:55:29,916 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-15 23:55:29,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:55:29 BoogieIcfgContainer [2021-12-15 23:55:29,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 23:55:29,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 23:55:29,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 23:55:29,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 23:55:29,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:55:29" (1/3) ... [2021-12-15 23:55:29,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4326c6bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:55:29, skipping insertion in model container [2021-12-15 23:55:29,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:29" (2/3) ... [2021-12-15 23:55:29,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4326c6bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:55:29, skipping insertion in model container [2021-12-15 23:55:29,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:55:29" (3/3) ... [2021-12-15 23:55:29,939 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2c_append_equal.i [2021-12-15 23:55:29,942 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 23:55:29,942 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 23:55:29,986 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 23:55:29,990 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 [2021-12-15 23:55:29,990 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 23:55:30,000 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 30 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 23:55:30,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-15 23:55:30,004 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:55:30,004 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:55:30,005 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:55:30,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:55:30,008 INFO L85 PathProgramCache]: Analyzing trace with hash 976010426, now seen corresponding path program 1 times [2021-12-15 23:55:30,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:55:30,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072498268] [2021-12-15 23:55:30,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:30,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:55:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:30,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-15 23:55:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:30,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-15 23:55:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:30,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-15 23:55:30,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:55:30,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072498268] [2021-12-15 23:55:30,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072498268] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:55:30,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:55:30,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 23:55:30,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257108541] [2021-12-15 23:55:30,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:55:30,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 23:55:30,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:55:30,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 23:55:30,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 23:55:30,306 INFO L87 Difference]: Start difference. First operand has 35 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 30 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 23:55:30,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:55:30,375 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2021-12-15 23:55:30,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 23:55:30,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2021-12-15 23:55:30,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:55:30,386 INFO L225 Difference]: With dead ends: 61 [2021-12-15 23:55:30,387 INFO L226 Difference]: Without dead ends: 27 [2021-12-15 23:55:30,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 23:55:30,393 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:55:30,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 23:55:30,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-15 23:55:30,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-12-15 23:55:30,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 23:55:30,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2021-12-15 23:55:30,423 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 24 [2021-12-15 23:55:30,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:55:30,424 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-12-15 23:55:30,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 23:55:30,424 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2021-12-15 23:55:30,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-15 23:55:30,425 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:55:30,425 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:55:30,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 23:55:30,426 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:55:30,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:55:30,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1442307826, now seen corresponding path program 1 times [2021-12-15 23:55:30,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:55:30,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889690863] [2021-12-15 23:55:30,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:30,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:55:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:30,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-15 23:55:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:30,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-15 23:55:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:30,528 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-15 23:55:30,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:55:30,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889690863] [2021-12-15 23:55:30,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889690863] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:55:30,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:55:30,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 23:55:30,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521285904] [2021-12-15 23:55:30,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:55:30,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 23:55:30,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:55:30,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 23:55:30,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 23:55:30,532 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 23:55:30,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:55:30,567 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2021-12-15 23:55:30,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 23:55:30,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2021-12-15 23:55:30,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:55:30,568 INFO L225 Difference]: With dead ends: 50 [2021-12-15 23:55:30,568 INFO L226 Difference]: Without dead ends: 32 [2021-12-15 23:55:30,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 23:55:30,570 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:55:30,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 71 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 23:55:30,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-15 23:55:30,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2021-12-15 23:55:30,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 23:55:30,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2021-12-15 23:55:30,575 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 24 [2021-12-15 23:55:30,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:55:30,575 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-12-15 23:55:30,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 23:55:30,576 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2021-12-15 23:55:30,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-15 23:55:30,577 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:55:30,577 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:55:30,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 23:55:30,577 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:55:30,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:55:30,578 INFO L85 PathProgramCache]: Analyzing trace with hash 915772386, now seen corresponding path program 1 times [2021-12-15 23:55:30,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:55:30,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211813918] [2021-12-15 23:55:30,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:30,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:55:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:30,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-15 23:55:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:30,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:55:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:30,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-15 23:55:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:30,887 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-15 23:55:30,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:55:30,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211813918] [2021-12-15 23:55:30,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211813918] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:55:30,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659693212] [2021-12-15 23:55:30,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:30,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:55:30,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:55:30,899 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) [2021-12-15 23:55:30,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 23:55:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:31,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-15 23:55:31,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:55:31,465 INFO L388 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 17 treesize of output 9 [2021-12-15 23:55:31,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:31,588 INFO L388 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 24 treesize of output 24 [2021-12-15 23:55:31,625 INFO L388 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 25 treesize of output 13 [2021-12-15 23:55:31,653 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 23:55:31,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 23:55:31,747 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_9| Int) (v_ArrVal_460 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_9| v_ArrVal_460) |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (or (<= (+ .cse0 1) 0) (<= |c_#StackHeapBarrier| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_9|) (<= 1 .cse0)))) is different from false [2021-12-15 23:55:31,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659693212] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:55:31,749 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-15 23:55:31,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 25 [2021-12-15 23:55:31,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691548226] [2021-12-15 23:55:31,749 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-15 23:55:31,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-15 23:55:31,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:55:31,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-15 23:55:31,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=572, Unknown=1, NotChecked=48, Total=702 [2021-12-15 23:55:31,752 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 25 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 19 states have internal predecessors, (44), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-15 23:55:32,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:55:32,093 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2021-12-15 23:55:32,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-15 23:55:32,094 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 19 states have internal predecessors, (44), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 34 [2021-12-15 23:55:32,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:55:32,095 INFO L225 Difference]: With dead ends: 37 [2021-12-15 23:55:32,095 INFO L226 Difference]: Without dead ends: 29 [2021-12-15 23:55:32,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=920, Unknown=1, NotChecked=62, Total=1122 [2021-12-15 23:55:32,096 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 22 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 23:55:32,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 219 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 186 Invalid, 0 Unknown, 22 Unchecked, 0.2s Time] [2021-12-15 23:55:32,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-15 23:55:32,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-12-15 23:55:32,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 23:55:32,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2021-12-15 23:55:32,100 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 34 [2021-12-15 23:55:32,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:55:32,101 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2021-12-15 23:55:32,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 19 states have internal predecessors, (44), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-15 23:55:32,101 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2021-12-15 23:55:32,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-15 23:55:32,102 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:55:32,102 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:55:32,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-15 23:55:32,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:55:32,316 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:55:32,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:55:32,316 INFO L85 PathProgramCache]: Analyzing trace with hash 917619428, now seen corresponding path program 1 times [2021-12-15 23:55:32,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:55:32,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331692739] [2021-12-15 23:55:32,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:32,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:55:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:32,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-15 23:55:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:32,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:55:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:33,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-15 23:55:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:33,225 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-15 23:55:33,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:55:33,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331692739] [2021-12-15 23:55:33,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331692739] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:55:33,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982007044] [2021-12-15 23:55:33,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:33,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:55:33,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:55:33,239 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) [2021-12-15 23:55:33,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-15 23:55:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:34,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 250 conjunts are in the unsatisfiable core [2021-12-15 23:55:35,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:55:35,018 INFO L388 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 23:55:35,059 INFO L388 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 5 treesize of output 3 [2021-12-15 23:55:35,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:35,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-12-15 23:55:35,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:35,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-15 23:55:35,340 INFO L388 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 [2021-12-15 23:55:35,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:35,417 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-12-15 23:55:35,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2021-12-15 23:55:35,510 INFO L388 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 19 treesize of output 18 [2021-12-15 23:55:35,580 INFO L388 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 14 treesize of output 16 [2021-12-15 23:55:35,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:35,772 INFO L388 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 22 treesize of output 19 [2021-12-15 23:55:35,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:35,779 INFO L388 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 14 treesize of output 14 [2021-12-15 23:55:35,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2021-12-15 23:55:35,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 14 treesize of output 18 [2021-12-15 23:55:35,959 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:55:35,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 32 [2021-12-15 23:55:35,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:35,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-12-15 23:55:35,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2021-12-15 23:55:36,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:36,169 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-15 23:55:36,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 65 [2021-12-15 23:55:36,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:36,175 INFO L388 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 18 treesize of output 20 [2021-12-15 23:55:36,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:36,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:36,191 INFO L354 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2021-12-15 23:55:36,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 33 [2021-12-15 23:55:36,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:36,207 INFO L388 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 14 treesize of output 16 [2021-12-15 23:55:36,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:36,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:36,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 23:55:36,549 INFO L354 Elim1Store]: treesize reduction 483, result has 13.9 percent of original size [2021-12-15 23:55:36,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 681 treesize of output 269 [2021-12-15 23:55:36,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:36,567 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-12-15 23:55:36,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 1572 treesize of output 1232 [2021-12-15 23:55:36,689 INFO L354 Elim1Store]: treesize reduction 138, result has 30.3 percent of original size [2021-12-15 23:55:36,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 9 new quantified variables, introduced 13 case distinctions, treesize of input 1491 treesize of output 1133 [2021-12-15 23:55:36,716 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-15 23:55:36,716 INFO L388 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 1166 treesize of output 803 [2021-12-15 23:55:36,861 INFO L354 Elim1Store]: treesize reduction 158, result has 23.7 percent of original size [2021-12-15 23:55:36,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 1405 treesize of output 1275 [2021-12-15 23:55:36,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:36,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:37,909 INFO L354 Elim1Store]: treesize reduction 2560, result has 35.3 percent of original size [2021-12-15 23:55:37,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 16 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 18 new quantified variables, introduced 41 case distinctions, treesize of input 1574 treesize of output 2622 [2021-12-15 23:55:37,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:38,044 INFO L354 Elim1Store]: treesize reduction 150, result has 33.0 percent of original size [2021-12-15 23:55:38,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 2692 treesize of output 1686 [2021-12-15 23:55:38,105 INFO L388 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 1473 treesize of output 1295 [2021-12-15 23:55:38,151 INFO L388 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 274 treesize of output 250 [2021-12-15 23:55:38,196 INFO L388 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 1305 treesize of output 1225 [2021-12-15 23:55:38,258 INFO L388 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 161 treesize of output 145 [2021-12-15 23:55:38,313 INFO L388 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 113 treesize of output 105 [2021-12-15 23:55:43,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:43,602 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-12-15 23:55:43,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 66 [2021-12-15 23:55:45,987 INFO L388 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 19 treesize of output 11 [2021-12-15 23:55:48,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:48,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:48,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 52 [2021-12-15 23:55:48,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:48,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:48,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:48,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 69 [2021-12-15 23:55:48,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:48,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:48,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 63 [2021-12-15 23:55:48,498 INFO L388 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 19 treesize of output 11 [2021-12-15 23:55:48,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:48,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:48,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:48,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:48,597 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:55:48,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 110 treesize of output 104 [2021-12-15 23:55:48,616 INFO L388 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 19 treesize of output 11 [2021-12-15 23:55:48,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:48,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:48,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 83 [2021-12-15 23:55:48,941 INFO L388 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 19 treesize of output 11 [2021-12-15 23:55:49,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:49,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:49,152 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:55:49,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 133 treesize of output 153 [2021-12-15 23:55:49,421 INFO L354 Elim1Store]: treesize reduction 12, result has 88.6 percent of original size [2021-12-15 23:55:49,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 2140 treesize of output 2176 [2021-12-15 23:55:49,509 INFO L354 Elim1Store]: treesize reduction 12, result has 88.6 percent of original size [2021-12-15 23:55:49,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 2096 treesize of output 2136 [2021-12-15 23:55:49,644 INFO L354 Elim1Store]: treesize reduction 12, result has 88.6 percent of original size [2021-12-15 23:55:49,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 2066 treesize of output 2110 [2021-12-15 23:55:49,786 INFO L354 Elim1Store]: treesize reduction 12, result has 88.6 percent of original size [2021-12-15 23:55:49,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 2022 treesize of output 1984 [2021-12-15 23:55:49,869 INFO L354 Elim1Store]: treesize reduction 12, result has 88.6 percent of original size [2021-12-15 23:55:49,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 1904 treesize of output 1940 [2021-12-15 23:55:49,992 INFO L354 Elim1Store]: treesize reduction 12, result has 88.6 percent of original size [2021-12-15 23:55:49,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 1874 treesize of output 1918 [2021-12-15 23:55:50,140 INFO L354 Elim1Store]: treesize reduction 12, result has 88.6 percent of original size [2021-12-15 23:55:50,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 1850 treesize of output 1894 [2021-12-15 23:55:50,236 INFO L354 Elim1Store]: treesize reduction 12, result has 88.6 percent of original size [2021-12-15 23:55:50,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 1812 treesize of output 1856