./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/list-simple/dll2c_insert_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_insert_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 535caea86e22f289c2fcb0364594f5e7b1dfaabfa814e56099346e6a240c0067 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-15 23:55:32,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 23:55:32,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 23:55:33,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 23:55:33,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 23:55:33,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 23:55:33,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 23:55:33,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 23:55:33,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 23:55:33,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 23:55:33,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 23:55:33,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 23:55:33,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 23:55:33,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 23:55:33,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 23:55:33,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 23:55:33,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 23:55:33,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 23:55:33,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 23:55:33,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 23:55:33,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 23:55:33,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 23:55:33,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 23:55:33,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 23:55:33,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 23:55:33,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 23:55:33,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 23:55:33,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 23:55:33,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 23:55:33,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 23:55:33,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 23:55:33,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 23:55:33,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 23:55:33,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 23:55:33,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 23:55:33,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 23:55:33,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 23:55:33,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 23:55:33,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 23:55:33,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 23:55:33,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 23:55:33,072 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 23:55:33,114 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 23:55:33,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 23:55:33,115 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 23:55:33,116 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 23:55:33,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 23:55:33,117 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 23:55:33,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 23:55:33,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 23:55:33,118 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 23:55:33,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 23:55:33,119 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 23:55:33,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 23:55:33,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 23:55:33,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 23:55:33,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 23:55:33,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 23:55:33,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 23:55:33,120 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 23:55:33,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 23:55:33,121 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 23:55:33,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 23:55:33,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 23:55:33,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 23:55:33,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 23:55:33,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:55:33,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 23:55:33,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 23:55:33,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 23:55:33,123 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 23:55:33,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 23:55:33,123 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 23:55:33,123 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 23:55:33,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 23:55:33,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 23:55:33,124 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 535caea86e22f289c2fcb0364594f5e7b1dfaabfa814e56099346e6a240c0067 [2021-12-15 23:55:33,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 23:55:33,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 23:55:33,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 23:55:33,399 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 23:55:33,400 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 23:55:33,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/dll2c_insert_equal.i [2021-12-15 23:55:33,483 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/160bdf011/c598471619b84953aabffa3de390f3af/FLAGa51ed5530 [2021-12-15 23:55:33,912 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 23:55:33,912 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2c_insert_equal.i [2021-12-15 23:55:33,928 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/160bdf011/c598471619b84953aabffa3de390f3af/FLAGa51ed5530 [2021-12-15 23:55:34,285 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/160bdf011/c598471619b84953aabffa3de390f3af [2021-12-15 23:55:34,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 23:55:34,289 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 23:55:34,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 23:55:34,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 23:55:34,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 23:55:34,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:55:34" (1/1) ... [2021-12-15 23:55:34,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f6ed858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:34, skipping insertion in model container [2021-12-15 23:55:34,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:55:34" (1/1) ... [2021-12-15 23:55:34,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 23:55:34,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 23:55:34,595 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_insert_equal.i[24877,24890] [2021-12-15 23:55:34,597 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:55:34,603 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 23:55:34,680 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_insert_equal.i[24877,24890] [2021-12-15 23:55:34,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:55:34,709 INFO L208 MainTranslator]: Completed translation [2021-12-15 23:55:34,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:34 WrapperNode [2021-12-15 23:55:34,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 23:55:34,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 23:55:34,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 23:55:34,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 23:55:34,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:34" (1/1) ... [2021-12-15 23:55:34,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:34" (1/1) ... [2021-12-15 23:55:34,776 INFO L137 Inliner]: procedures = 127, calls = 53, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 154 [2021-12-15 23:55:34,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 23:55:34,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 23:55:34,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 23:55:34,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 23:55:34,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:34" (1/1) ... [2021-12-15 23:55:34,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:34" (1/1) ... [2021-12-15 23:55:34,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:34" (1/1) ... [2021-12-15 23:55:34,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:34" (1/1) ... [2021-12-15 23:55:34,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:34" (1/1) ... [2021-12-15 23:55:34,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:34" (1/1) ... [2021-12-15 23:55:34,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:34" (1/1) ... [2021-12-15 23:55:34,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 23:55:34,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 23:55:34,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 23:55:34,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 23:55:34,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:34" (1/1) ... [2021-12-15 23:55:34,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:55:34,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:55:34,850 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 23:55:34,852 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 23:55:34,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 23:55:34,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 23:55:34,875 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-12-15 23:55:34,875 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-12-15 23:55:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 23:55:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 23:55:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 23:55:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 23:55:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 23:55:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 23:55:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-15 23:55:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 23:55:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 23:55:34,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 23:55:34,981 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 23:55:34,982 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 23:55:35,349 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 23:55:35,355 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 23:55:35,355 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-15 23:55:35,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:55:35 BoogieIcfgContainer [2021-12-15 23:55:35,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 23:55:35,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 23:55:35,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 23:55:35,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 23:55:35,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:55:34" (1/3) ... [2021-12-15 23:55:35,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f10ec6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:55:35, skipping insertion in model container [2021-12-15 23:55:35,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:55:34" (2/3) ... [2021-12-15 23:55:35,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f10ec6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:55:35, skipping insertion in model container [2021-12-15 23:55:35,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:55:35" (3/3) ... [2021-12-15 23:55:35,368 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2c_insert_equal.i [2021-12-15 23:55:35,372 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 23:55:35,372 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 23:55:35,414 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 23:55:35,420 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 23:55:35,420 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 23:55:35,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 32 states have (on average 1.5) internal successors, (48), 33 states have internal predecessors, (48), 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 23:55:35,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-15 23:55:35,447 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:55:35,447 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, 1] [2021-12-15 23:55:35,448 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:55:35,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:55:35,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1237252285, now seen corresponding path program 1 times [2021-12-15 23:55:35,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:55:35,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108541089] [2021-12-15 23:55:35,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:35,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:55:35,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:35,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-15 23:55:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:35,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-15 23:55:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:35,721 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 23:55:35,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:55:35,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108541089] [2021-12-15 23:55:35,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108541089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:55:35,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:55:35,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 23:55:35,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654282437] [2021-12-15 23:55:35,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:55:35,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 23:55:35,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:55:35,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 23:55:35,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 23:55:35,755 INFO L87 Difference]: Start difference. First operand has 38 states, 32 states have (on average 1.5) internal successors, (48), 33 states have internal predecessors, (48), 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 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 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 23:55:35,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:55:35,844 INFO L93 Difference]: Finished difference Result 67 states and 94 transitions. [2021-12-15 23:55:35,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 23:55:35,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 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 25 [2021-12-15 23:55:35,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:55:35,853 INFO L225 Difference]: With dead ends: 67 [2021-12-15 23:55:35,854 INFO L226 Difference]: Without dead ends: 30 [2021-12-15 23:55:35,856 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 23:55:35,860 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 23:55:35,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 23:55:35,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-15 23:55:35,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-12-15 23:55:35,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 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 23:55:35,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2021-12-15 23:55:35,903 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 25 [2021-12-15 23:55:35,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:55:35,906 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2021-12-15 23:55:35,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 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 23:55:35,907 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2021-12-15 23:55:35,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-15 23:55:35,909 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:55:35,909 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, 1] [2021-12-15 23:55:35,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 23:55:35,910 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:55:35,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:55:35,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1104710801, now seen corresponding path program 1 times [2021-12-15 23:55:35,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:55:35,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928192821] [2021-12-15 23:55:35,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:35,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:55:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:36,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-15 23:55:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:36,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-15 23:55:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:36,090 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 23:55:36,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:55:36,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928192821] [2021-12-15 23:55:36,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928192821] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:55:36,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:55:36,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 23:55:36,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559691759] [2021-12-15 23:55:36,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:55:36,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 23:55:36,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:55:36,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 23:55:36,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 23:55:36,093 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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 23:55:36,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:55:36,175 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2021-12-15 23:55:36,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 23:55:36,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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 25 [2021-12-15 23:55:36,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:55:36,178 INFO L225 Difference]: With dead ends: 56 [2021-12-15 23:55:36,178 INFO L226 Difference]: Without dead ends: 35 [2021-12-15 23:55:36,179 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 23:55:36,182 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 4 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 23:55:36,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 82 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 23:55:36,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-12-15 23:55:36,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2021-12-15 23:55:36,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 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 23:55:36,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2021-12-15 23:55:36,190 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 25 [2021-12-15 23:55:36,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:55:36,191 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2021-12-15 23:55:36,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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 23:55:36,191 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2021-12-15 23:55:36,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-15 23:55:36,192 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:55:36,192 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, 1] [2021-12-15 23:55:36,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 23:55:36,192 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:55:36,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:55:36,193 INFO L85 PathProgramCache]: Analyzing trace with hash -313226979, now seen corresponding path program 1 times [2021-12-15 23:55:36,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:55:36,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351596688] [2021-12-15 23:55:36,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:36,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:55:36,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:36,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-15 23:55:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:36,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:55:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:36,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-15 23:55:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:36,334 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-15 23:55:36,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:55:36,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351596688] [2021-12-15 23:55:36,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351596688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:55:36,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:55:36,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 23:55:36,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624279691] [2021-12-15 23:55:36,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:55:36,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 23:55:36,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:55:36,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 23:55:36,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 23:55:36,337 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-15 23:55:36,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:55:36,401 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2021-12-15 23:55:36,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 23:55:36,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2021-12-15 23:55:36,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:55:36,404 INFO L225 Difference]: With dead ends: 49 [2021-12-15 23:55:36,404 INFO L226 Difference]: Without dead ends: 41 [2021-12-15 23:55:36,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 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 23:55:36,413 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 13 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 23:55:36,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 95 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 23:55:36,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-12-15 23:55:36,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2021-12-15 23:55:36,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 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 23:55:36,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2021-12-15 23:55:36,429 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 35 [2021-12-15 23:55:36,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:55:36,429 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2021-12-15 23:55:36,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-15 23:55:36,430 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2021-12-15 23:55:36,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-15 23:55:36,431 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:55:36,431 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, 1, 1] [2021-12-15 23:55:36,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 23:55:36,432 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:55:36,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:55:36,433 INFO L85 PathProgramCache]: Analyzing trace with hash 415590512, now seen corresponding path program 1 times [2021-12-15 23:55:36,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:55:36,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541300368] [2021-12-15 23:55:36,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:36,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:55:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:37,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-15 23:55:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:37,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:55:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:37,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-15 23:55:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:37,955 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-15 23:55:37,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:55:37,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541300368] [2021-12-15 23:55:37,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541300368] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:55:37,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539700639] [2021-12-15 23:55:37,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:37,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:55:37,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:55:37,958 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 23:55:37,987 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 23:55:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:38,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 164 conjunts are in the unsatisfiable core [2021-12-15 23:55:38,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:55:38,698 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 23:55:38,798 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 23:55:38,983 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-15 23:55:38,985 INFO L388 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 [2021-12-15 23:55:39,208 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 23:55:39,298 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 23:55:39,426 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-12-15 23:55:39,427 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 23:55:39,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 23:55:39,547 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 23:55:39,673 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 23:55:39,685 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 23:55:39,982 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-12-15 23:55:39,982 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 55 [2021-12-15 23:55:39,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:39,991 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 26 treesize of output 23 [2021-12-15 23:55:40,003 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 23:55:40,287 INFO L354 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2021-12-15 23:55:40,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 39 [2021-12-15 23:55:40,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2021-12-15 23:55:40,304 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 23:55:40,311 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 7 treesize of output 3 [2021-12-15 23:55:40,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:40,642 INFO L354 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2021-12-15 23:55:40,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 87 treesize of output 75 [2021-12-15 23:55:40,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:40,653 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 18 treesize of output 20 [2021-12-15 23:55:40,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:40,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:40,678 INFO L354 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2021-12-15 23:55:40,679 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 23:55:40,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:40,706 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 23:55:41,200 INFO L354 Elim1Store]: treesize reduction 104, result has 14.8 percent of original size [2021-12-15 23:55:41,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 202 treesize of output 119 [2021-12-15 23:55:41,258 INFO L354 Elim1Store]: treesize reduction 74, result has 17.8 percent of original size [2021-12-15 23:55:41,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 210 treesize of output 163 [2021-12-15 23:55:41,267 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 159 treesize of output 129 [2021-12-15 23:55:41,273 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 51 [2021-12-15 23:55:41,291 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-12-15 23:55:41,291 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 146 treesize of output 119 [2021-12-15 23:55:41,334 INFO L354 Elim1Store]: treesize reduction 66, result has 23.3 percent of original size [2021-12-15 23:55:41,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 141 treesize of output 137 [2021-12-15 23:55:41,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2021-12-15 23:55:41,450 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 23:55:41,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 38 [2021-12-15 23:55:41,454 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 0 case distinctions, treesize of input 26 treesize of output 13 [2021-12-15 23:55:41,508 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 15 treesize of output 7 [2021-12-15 23:55:41,555 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 23:55:41,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 23:55:41,673 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_722 (Array Int Int)) (v_ArrVal_732 (Array Int Int)) (v_ArrVal_721 (Array Int Int)) (v_ArrVal_726 (Array Int Int)) (v_ArrVal_736 (Array Int Int)) (v_ArrVal_738 Int) (v_ArrVal_720 (Array Int Int))) (= (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|) |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| v_ArrVal_738)) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_720) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_721) (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|) |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_736) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_732) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|) |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_726) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_722) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 8)) |c_ULTIMATE.start_main_~data~0#1|)) is different from false [2021-12-15 23:55:41,693 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_722 (Array Int Int)) (v_ArrVal_721 (Array Int Int)) (v_ArrVal_732 (Array Int Int)) (v_ArrVal_726 (Array Int Int)) (v_ArrVal_736 (Array Int Int)) (v_ArrVal_738 Int) (v_ArrVal_720 (Array Int Int))) (= (let ((.cse1 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.offset|))) (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.offset| v_ArrVal_738)) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_720) .cse0 v_ArrVal_721) (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store .cse1 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_736) .cse0 v_ArrVal_732) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_726) .cse0 v_ArrVal_722) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 8)))) |c_ULTIMATE.start_main_~data~0#1|)) is different from false [2021-12-15 23:55:41,707 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_722 (Array Int Int)) (v_ArrVal_721 (Array Int Int)) (v_ArrVal_732 (Array Int Int)) (v_ArrVal_726 (Array Int Int)) (v_ArrVal_736 (Array Int Int)) (v_ArrVal_738 Int) (v_ArrVal_720 (Array Int Int))) (= (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse3 (select |c_#memory_$Pointer$.base| .cse0)) (.cse1 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse2 (select .cse3 .cse1))) (select (select (store (store (store |c_#memory_int| .cse0 (store (select |c_#memory_int| .cse0) .cse1 v_ArrVal_738)) |c_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base| v_ArrVal_720) .cse2 v_ArrVal_721) (select (select (store (store (store |c_#memory_$Pointer$.base| .cse0 (store .cse3 .cse1 |c_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base|)) |c_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base| v_ArrVal_736) .cse2 v_ArrVal_732) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ (select (select (store (store (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) .cse1 |c_ULTIMATE.start_dll_circular_insert_#t~ret9#1.offset|)) |c_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base| v_ArrVal_726) .cse2 v_ArrVal_722) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 8))))) |c_ULTIMATE.start_main_~data~0#1|)) is different from false [2021-12-15 23:55:41,843 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_722 (Array Int Int)) (v_ArrVal_721 (Array Int Int)) (v_ArrVal_732 (Array Int Int)) (|v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_9| Int) (v_ArrVal_748 (Array Int Int)) (v_ArrVal_726 (Array Int Int)) (v_ArrVal_747 (Array Int Int)) (v_ArrVal_736 (Array Int Int)) (v_ArrVal_749 (Array Int Int)) (v_ArrVal_738 Int) (v_ArrVal_720 (Array Int Int))) (or (not (= 0 (select |c_#valid| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_9|))) (= (let ((.cse4 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_9| v_ArrVal_747))) (let ((.cse6 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_9| v_ArrVal_749)) (.cse1 (select (select .cse4 |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse5 (select .cse4 .cse1)) (.cse2 (select (select .cse6 |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse3 (select .cse5 .cse2))) (select (select (store (store (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_9| v_ArrVal_748))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_ArrVal_738))) |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_9| v_ArrVal_720) .cse3 v_ArrVal_721) (select (select (store (store (store .cse4 .cse1 (store .cse5 .cse2 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_9|)) |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_9| v_ArrVal_736) .cse3 v_ArrVal_732) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ (select (select (store (store (store .cse6 .cse1 (store (select .cse6 .cse1) .cse2 0)) |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_9| v_ArrVal_726) .cse3 v_ArrVal_722) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 8)))))) |c_ULTIMATE.start_main_~data~0#1|) (<= |c_#StackHeapBarrier| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_9|))) is different from false [2021-12-15 23:55:41,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539700639] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:55:41,846 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-15 23:55:41,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 47 [2021-12-15 23:55:41,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91552306] [2021-12-15 23:55:41,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-15 23:55:41,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-12-15 23:55:41,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:55:41,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-12-15 23:55:41,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2208, Unknown=6, NotChecked=388, Total=2756 [2021-12-15 23:55:41,849 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 47 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 38 states have internal predecessors, (58), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-15 23:55:42,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:55:42,723 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2021-12-15 23:55:42,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-15 23:55:42,724 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 38 states have internal predecessors, (58), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 36 [2021-12-15 23:55:42,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:55:42,727 INFO L225 Difference]: With dead ends: 64 [2021-12-15 23:55:42,727 INFO L226 Difference]: Without dead ends: 62 [2021-12-15 23:55:42,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=213, Invalid=2877, Unknown=6, NotChecked=444, Total=3540 [2021-12-15 23:55:42,729 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 26 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-15 23:55:42,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 424 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 611 Invalid, 0 Unknown, 85 Unchecked, 0.5s Time] [2021-12-15 23:55:42,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-12-15 23:55:42,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 53. [2021-12-15 23:55:42,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 45 states have (on average 1.288888888888889) internal successors, (58), 45 states have internal predecessors, (58), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-15 23:55:42,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2021-12-15 23:55:42,738 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 36 [2021-12-15 23:55:42,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:55:42,738 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2021-12-15 23:55:42,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 38 states have internal predecessors, (58), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-15 23:55:42,739 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2021-12-15 23:55:42,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-15 23:55:42,740 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:55:42,740 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, 1, 1, 1] [2021-12-15 23:55:42,767 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 23:55:42,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:55:42,956 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:55:42,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:55:42,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1234028387, now seen corresponding path program 1 times [2021-12-15 23:55:42,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:55:42,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526867940] [2021-12-15 23:55:42,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:42,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:55:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:43,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-15 23:55:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:43,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:55:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:43,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-15 23:55:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:43,112 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-15 23:55:43,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:55:43,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526867940] [2021-12-15 23:55:43,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526867940] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:55:43,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:55:43,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 23:55:43,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974285483] [2021-12-15 23:55:43,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:55:43,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 23:55:43,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:55:43,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 23:55:43,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 23:55:43,115 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-15 23:55:43,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:55:43,181 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-12-15 23:55:43,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 23:55:43,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2021-12-15 23:55:43,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:55:43,184 INFO L225 Difference]: With dead ends: 63 [2021-12-15 23:55:43,184 INFO L226 Difference]: Without dead ends: 52 [2021-12-15 23:55:43,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-15 23:55:43,185 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 19 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:55:43,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 87 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 23:55:43,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-12-15 23:55:43,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-12-15 23:55:43,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.25) internal successors, (55), 44 states have internal predecessors, (55), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-15 23:55:43,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2021-12-15 23:55:43,200 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 37 [2021-12-15 23:55:43,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:55:43,202 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2021-12-15 23:55:43,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-15 23:55:43,202 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2021-12-15 23:55:43,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-15 23:55:43,208 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:55:43,208 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 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 23:55:43,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-15 23:55:43,209 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:55:43,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:55:43,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1534096253, now seen corresponding path program 2 times [2021-12-15 23:55:43,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:55:43,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791267094] [2021-12-15 23:55:43,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:43,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:55:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:43,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-15 23:55:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:43,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:55:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:43,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-15 23:55:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:43,345 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-15 23:55:43,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:55:43,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791267094] [2021-12-15 23:55:43,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791267094] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:55:43,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:55:43,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 23:55:43,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825446681] [2021-12-15 23:55:43,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:55:43,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 23:55:43,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:55:43,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 23:55:43,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-15 23:55:43,347 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-15 23:55:43,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:55:43,400 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2021-12-15 23:55:43,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-15 23:55:43,402 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2021-12-15 23:55:43,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:55:43,403 INFO L225 Difference]: With dead ends: 64 [2021-12-15 23:55:43,403 INFO L226 Difference]: Without dead ends: 52 [2021-12-15 23:55:43,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-15 23:55:43,405 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 48 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:55:43,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 73 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 23:55:43,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-12-15 23:55:43,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-12-15 23:55:43,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 44 states have internal predecessors, (53), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-15 23:55:43,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2021-12-15 23:55:43,419 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 37 [2021-12-15 23:55:43,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:55:43,419 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2021-12-15 23:55:43,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-15 23:55:43,420 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2021-12-15 23:55:43,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-15 23:55:43,420 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:55:43,421 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, 1, 1, 1, 1] [2021-12-15 23:55:43,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 23:55:43,421 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:55:43,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:55:43,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1547967990, now seen corresponding path program 1 times [2021-12-15 23:55:43,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:55:43,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638387048] [2021-12-15 23:55:43,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:43,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:55:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:43,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-15 23:55:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:43,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:55:43,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:43,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-15 23:55:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:43,576 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-15 23:55:43,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:55:43,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638387048] [2021-12-15 23:55:43,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638387048] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:55:43,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717715433] [2021-12-15 23:55:43,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:43,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:55:43,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:55:43,578 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 23:55:43,612 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 23:55:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:43,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-15 23:55:43,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:55:43,994 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 15 treesize of output 7 [2021-12-15 23:55:43,999 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 15 treesize of output 7 [2021-12-15 23:55:44,012 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-15 23:55:44,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 23:55:44,136 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-15 23:55:44,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717715433] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 23:55:44,136 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 23:55:44,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2021-12-15 23:55:44,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892704736] [2021-12-15 23:55:44,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 23:55:44,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-15 23:55:44,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:55:44,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-15 23:55:44,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-15 23:55:44,139 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-15 23:55:44,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:55:44,229 INFO L93 Difference]: Finished difference Result 69 states and 82 transitions. [2021-12-15 23:55:44,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 23:55:44,230 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2021-12-15 23:55:44,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:55:44,231 INFO L225 Difference]: With dead ends: 69 [2021-12-15 23:55:44,231 INFO L226 Difference]: Without dead ends: 60 [2021-12-15 23:55:44,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 75 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-15 23:55:44,232 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 10 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 23:55:44,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 147 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 23:55:44,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-12-15 23:55:44,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2021-12-15 23:55:44,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 44 states have internal predecessors, (52), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-15 23:55:44,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2021-12-15 23:55:44,244 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 38 [2021-12-15 23:55:44,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:55:44,245 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2021-12-15 23:55:44,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-15 23:55:44,245 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2021-12-15 23:55:44,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-15 23:55:44,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:55:44,247 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, 1, 1, 1, 1] [2021-12-15 23:55:44,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-15 23:55:44,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-15 23:55:44,472 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:55:44,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:55:44,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1605226292, now seen corresponding path program 1 times [2021-12-15 23:55:44,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:55:44,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072664303] [2021-12-15 23:55:44,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:44,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:55:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:44,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-15 23:55:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:44,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:55:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:44,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-15 23:55:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:44,742 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-15 23:55:44,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:55:44,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072664303] [2021-12-15 23:55:44,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072664303] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:55:44,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491705924] [2021-12-15 23:55:44,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:44,743 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:55:44,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:55:44,744 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 23:55:44,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-15 23:55:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:44,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 34 conjunts are in the unsatisfiable core [2021-12-15 23:55:45,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:55:45,246 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 23:55:45,293 WARN L860 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_2625 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_2625))) (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|))) is different from true [2021-12-15 23:55:45,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:45,324 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 23:55:45,353 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 23:55:45,405 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2021-12-15 23:55:45,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 23:55:45,523 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_node_create_~temp~0#1.base_19| Int) (v_ArrVal_2628 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.base| |v_node_create_~temp~0#1.base_19| v_ArrVal_2628) |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (or (<= 1 .cse0) (<= (+ .cse0 1) 0) (<= |c_#StackHeapBarrier| |v_node_create_~temp~0#1.base_19|)))) is different from false [2021-12-15 23:55:45,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491705924] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:55:45,524 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-15 23:55:45,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 27 [2021-12-15 23:55:45,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384502204] [2021-12-15 23:55:45,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-15 23:55:45,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-15 23:55:45,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:55:45,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-15 23:55:45,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=622, Unknown=2, NotChecked=102, Total=812 [2021-12-15 23:55:45,526 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand has 27 states, 25 states have (on average 2.0) internal successors, (50), 21 states have internal predecessors, (50), 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 23:55:45,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:55:45,943 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2021-12-15 23:55:45,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 23:55:45,944 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.0) internal successors, (50), 21 states have internal predecessors, (50), 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 38 [2021-12-15 23:55:45,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:55:45,944 INFO L225 Difference]: With dead ends: 60 [2021-12-15 23:55:45,944 INFO L226 Difference]: Without dead ends: 50 [2021-12-15 23:55:45,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=155, Invalid=1041, Unknown=2, NotChecked=134, Total=1332 [2021-12-15 23:55:45,945 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 42 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 23:55:45,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 266 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 264 Invalid, 0 Unknown, 35 Unchecked, 0.2s Time] [2021-12-15 23:55:45,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-12-15 23:55:45,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-12-15 23:55:45,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 42 states have internal predecessors, (48), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-15 23:55:45,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2021-12-15 23:55:45,951 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 38 [2021-12-15 23:55:45,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:55:45,951 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2021-12-15 23:55:45,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.0) internal successors, (50), 21 states have internal predecessors, (50), 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 23:55:45,952 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2021-12-15 23:55:45,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-15 23:55:45,952 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:55:45,952 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, 1, 1, 1, 1, 1] [2021-12-15 23:55:45,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-15 23:55:46,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:55:46,164 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:55:46,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:55:46,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1532897229, now seen corresponding path program 1 times [2021-12-15 23:55:46,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:55:46,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209335983] [2021-12-15 23:55:46,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:46,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:55:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:46,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-15 23:55:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:46,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-15 23:55:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:46,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-15 23:55:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:46,988 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-15 23:55:46,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:55:46,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209335983] [2021-12-15 23:55:46,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209335983] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:55:46,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992837121] [2021-12-15 23:55:46,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:55:46,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:55:46,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:55:46,990 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 23:55:46,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-15 23:55:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:55:47,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 140 conjunts are in the unsatisfiable core [2021-12-15 23:55:47,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:55:47,264 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 23:55:47,275 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 23:55:47,387 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 23:55:47,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-15 23:55:47,499 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-15 23:55:47,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2021-12-15 23:55:47,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:47,642 INFO L354 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2021-12-15 23:55:47,643 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 3 case distinctions, treesize of input 22 treesize of output 29 [2021-12-15 23:55:47,738 INFO L388 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 [2021-12-15 23:55:47,822 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 23:55:47,823 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-12-15 23:55:48,033 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-12-15 23:55:48,033 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 34 [2021-12-15 23:55:48,272 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-12-15 23:55:48,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 30 [2021-12-15 23:55:48,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:48,283 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-15 23:55:48,284 INFO L388 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 1 case distinctions, treesize of input 16 treesize of output 10 [2021-12-15 23:55:48,289 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 7 treesize of output 3 [2021-12-15 23:55:48,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:48,523 INFO L354 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2021-12-15 23:55:48,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 92 treesize of output 74 [2021-12-15 23:55:48,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:48,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:48,543 INFO L354 Elim1Store]: treesize reduction 24, result has 46.7 percent of original size [2021-12-15 23:55:48,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 33 [2021-12-15 23:55:48,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:48,562 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 23:55:48,923 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-15 23:55:48,924 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 45 [2021-12-15 23:55:48,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:49,089 INFO L354 Elim1Store]: treesize reduction 156, result has 41.1 percent of original size [2021-12-15 23:55:49,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 75 treesize of output 171 [2021-12-15 23:55:49,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:49,326 INFO L354 Elim1Store]: treesize reduction 314, result has 37.8 percent of original size [2021-12-15 23:55:49,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 20 case distinctions, treesize of input 307 treesize of output 369 [2021-12-15 23:55:49,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:49,386 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:55:49,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 530 treesize of output 509 [2021-12-15 23:55:49,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:49,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:55:49,568 INFO L354 Elim1Store]: treesize reduction 178, result has 44.2 percent of original size [2021-12-15 23:55:49,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 481 treesize of output 520 [2021-12-15 23:55:49,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2021-12-15 23:55:49,622 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 12 treesize of output 11 [2021-12-15 23:55:50,208 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 85 treesize of output 63 [2021-12-15 23:55:50,417 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 92 treesize of output 68 [2021-12-15 23:55:50,718 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 85 treesize of output 63 [2021-12-15 23:55:51,550 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 85 treesize of output 63 [2021-12-15 23:55:51,675 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 92 treesize of output 68 [2021-12-15 23:55:51,809 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 85 treesize of output 63 [2021-12-15 23:55:51,956 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 93 treesize of output 69 [2021-12-15 23:55:52,309 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 87 treesize of output 65 [2021-12-15 23:55:53,004 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 85 treesize of output 63 [2021-12-15 23:55:53,147 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 85 treesize of output 63 [2021-12-15 23:55:55,229 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 66 treesize of output 50 [2021-12-15 23:55:55,416 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 59 treesize of output 45 [2021-12-15 23:55:55,582 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 59 treesize of output 45 [2021-12-15 23:55:55,764 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 59 treesize of output 45 [2021-12-15 23:55:55,941 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 67 treesize of output 51 [2021-12-15 23:55:56,294 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 61 treesize of output 47 [2021-12-15 23:55:56,877 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 59 treesize of output 45 [2021-12-15 23:55:58,037 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 59 treesize of output 45 [2021-12-15 23:55:58,243 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 59 treesize of output 45 [2021-12-15 23:55:58,412 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 66 treesize of output 50 [2021-12-15 23:56:01,634 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-15 23:56:01,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 290 treesize of output 270 [2021-12-15 23:56:02,263 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-15 23:56:03,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:56:03,652 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-12-15 23:56:03,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 295 treesize of output 273 [2021-12-15 23:56:09,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:56:09,393 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-12-15 23:56:09,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 295 treesize of output 273 [2021-12-15 23:56:11,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:56:11,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:56:11,491 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-12-15 23:56:11,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 23 [2021-12-15 23:56:13,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:56:13,296 INFO L354 Elim1Store]: treesize reduction 55, result has 15.4 percent of original size [2021-12-15 23:56:13,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 300 treesize of output 286 [2021-12-15 23:56:19,743 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-15 23:56:21,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:56:21,750 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-12-15 23:56:21,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 295 treesize of output 273 [2021-12-15 23:56:33,162 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-15 23:56:33,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:56:33,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 290 treesize of output 270 [2021-12-15 23:56:35,203 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-15 23:56:35,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:56:35,650 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-12-15 23:56:35,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 295 treesize of output 273 [2021-12-15 23:56:36,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:56:36,916 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-15 23:56:36,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 290 treesize of output 270 [2021-12-15 23:56:38,149 WARN L234 Elim1Store]: Array PQE input equivalent to false