./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/invert_string-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d91337-b7ea-4072-9df9-fd20b1d5fd67/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d91337-b7ea-4072-9df9-fd20b1d5fd67/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d91337-b7ea-4072-9df9-fd20b1d5fd67/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d91337-b7ea-4072-9df9-fd20b1d5fd67/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/invert_string-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d91337-b7ea-4072-9df9-fd20b1d5fd67/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d91337-b7ea-4072-9df9-fd20b1d5fd67/bin/utaipan-WLngWcDbfI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1b9a71645175fee79e6d6cd797db38ce6044ffb9 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:32:57,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:32:57,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:32:57,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:32:57,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:32:57,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:32:57,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:32:57,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:32:57,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:32:57,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:32:57,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:32:57,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:32:57,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:32:57,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:32:57,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:32:57,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:32:57,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:32:57,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:32:57,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:32:57,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:32:57,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:32:57,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:32:57,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:32:57,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:32:57,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:32:57,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:32:57,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:32:57,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:32:57,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:32:57,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:32:57,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:32:57,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:32:57,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:32:57,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:32:57,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:32:57,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:32:57,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:32:57,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:32:57,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:32:57,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:32:57,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:32:58,002 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d91337-b7ea-4072-9df9-fd20b1d5fd67/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:32:58,040 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:32:58,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:32:58,041 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:32:58,041 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:32:58,042 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:32:58,042 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:32:58,042 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:32:58,042 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:32:58,043 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:32:58,043 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:32:58,043 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:32:58,044 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:32:58,044 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:32:58,044 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:32:58,044 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:32:58,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:32:58,046 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:32:58,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:32:58,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:32:58,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:32:58,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:32:58,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:32:58,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:32:58,047 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:32:58,048 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:32:58,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:32:58,048 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:32:58,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:32:58,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:32:58,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:32:58,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:32:58,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:32:58,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:32:58,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:32:58,051 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:32:58,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:32:58,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:32:58,051 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:32:58,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:32:58,052 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d91337-b7ea-4072-9df9-fd20b1d5fd67/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d91337-b7ea-4072-9df9-fd20b1d5fd67/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b9a71645175fee79e6d6cd797db38ce6044ffb9 [2021-10-11 02:32:58,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:32:58,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:32:58,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:32:58,365 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:32:58,366 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:32:58,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d91337-b7ea-4072-9df9-fd20b1d5fd67/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loops/invert_string-1.c [2021-10-11 02:32:58,440 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d91337-b7ea-4072-9df9-fd20b1d5fd67/bin/utaipan-WLngWcDbfI/data/136f82390/6f2b78e5d52a4c52bdb1a7f5273b6f63/FLAGd029cd2aa [2021-10-11 02:32:58,953 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:32:58,953 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d91337-b7ea-4072-9df9-fd20b1d5fd67/sv-benchmarks/c/loops/invert_string-1.c [2021-10-11 02:32:58,960 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d91337-b7ea-4072-9df9-fd20b1d5fd67/bin/utaipan-WLngWcDbfI/data/136f82390/6f2b78e5d52a4c52bdb1a7f5273b6f63/FLAGd029cd2aa [2021-10-11 02:32:59,342 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d91337-b7ea-4072-9df9-fd20b1d5fd67/bin/utaipan-WLngWcDbfI/data/136f82390/6f2b78e5d52a4c52bdb1a7f5273b6f63 [2021-10-11 02:32:59,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:32:59,346 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:32:59,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:59,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:32:59,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:32:59,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:59" (1/1) ... [2021-10-11 02:32:59,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26756879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:59, skipping insertion in model container [2021-10-11 02:32:59,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:59" (1/1) ... [2021-10-11 02:32:59,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:32:59,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:32:59,533 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d91337-b7ea-4072-9df9-fd20b1d5fd67/sv-benchmarks/c/loops/invert_string-1.c[352,365] [2021-10-11 02:32:59,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:59,558 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:32:59,570 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d91337-b7ea-4072-9df9-fd20b1d5fd67/sv-benchmarks/c/loops/invert_string-1.c[352,365] [2021-10-11 02:32:59,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:59,590 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:32:59,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:59 WrapperNode [2021-10-11 02:32:59,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:59,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:59,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:32:59,592 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:32:59,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:59" (1/1) ... [2021-10-11 02:32:59,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:59" (1/1) ... [2021-10-11 02:32:59,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:59,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:32:59,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:32:59,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:32:59,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:59" (1/1) ... [2021-10-11 02:32:59,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:59" (1/1) ... [2021-10-11 02:32:59,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:59" (1/1) ... [2021-10-11 02:32:59,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:59" (1/1) ... [2021-10-11 02:32:59,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:59" (1/1) ... [2021-10-11 02:32:59,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:59" (1/1) ... [2021-10-11 02:32:59,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:59" (1/1) ... [2021-10-11 02:32:59,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:32:59,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:32:59,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:32:59,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:32:59,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:59" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d91337-b7ea-4072-9df9-fd20b1d5fd67/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:32:59,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:32:59,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:32:59,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:32:59,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:32:59,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:32:59,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:32:59,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:33:00,236 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:33:00,237 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-11 02:33:00,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:00 BoogieIcfgContainer [2021-10-11 02:33:00,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:33:00,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:33:00,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:33:00,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:33:00,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:32:59" (1/3) ... [2021-10-11 02:33:00,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40283948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:33:00, skipping insertion in model container [2021-10-11 02:33:00,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:59" (2/3) ... [2021-10-11 02:33:00,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40283948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:33:00, skipping insertion in model container [2021-10-11 02:33:00,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:00" (3/3) ... [2021-10-11 02:33:00,260 INFO L111 eAbstractionObserver]: Analyzing ICFG invert_string-1.c [2021-10-11 02:33:00,286 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:33:00,290 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:33:00,302 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:33:00,325 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:33:00,325 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:33:00,325 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:33:00,325 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:33:00,326 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:33:00,326 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:33:00,326 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:33:00,326 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:33:00,336 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2021-10-11 02:33:00,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:33:00,341 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:00,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:33:00,343 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:00,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:00,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1098288631, now seen corresponding path program 1 times [2021-10-11 02:33:00,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:00,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826997897] [2021-10-11 02:33:00,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:00,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:00,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826997897] [2021-10-11 02:33:00,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:00,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:33:00,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943062157] [2021-10-11 02:33:00,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:00,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:00,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:00,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:00,566 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2021-10-11 02:33:00,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:00,612 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2021-10-11 02:33:00,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:00,615 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-10-11 02:33:00,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:00,629 INFO L225 Difference]: With dead ends: 17 [2021-10-11 02:33:00,629 INFO L226 Difference]: Without dead ends: 9 [2021-10-11 02:33:00,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:00,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-11 02:33:00,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-11 02:33:00,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-11 02:33:00,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2021-10-11 02:33:00,689 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 6 [2021-10-11 02:33:00,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:00,689 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-10-11 02:33:00,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:00,690 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2021-10-11 02:33:00,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:33:00,691 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:00,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:00,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:33:00,692 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:00,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:00,695 INFO L82 PathProgramCache]: Analyzing trace with hash 62424348, now seen corresponding path program 1 times [2021-10-11 02:33:00,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:00,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635090035] [2021-10-11 02:33:00,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:00,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:33:00,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635090035] [2021-10-11 02:33:00,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:00,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:33:00,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656257392] [2021-10-11 02:33:00,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:33:00,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:00,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:33:00,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:33:00,849 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 4 states. [2021-10-11 02:33:00,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:00,930 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2021-10-11 02:33:00,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:33:00,931 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 02:33:00,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:00,932 INFO L225 Difference]: With dead ends: 15 [2021-10-11 02:33:00,933 INFO L226 Difference]: Without dead ends: 10 [2021-10-11 02:33:00,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:33:00,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-11 02:33:00,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-11 02:33:00,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 02:33:00,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-10-11 02:33:00,942 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2021-10-11 02:33:00,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:00,943 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-10-11 02:33:00,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:33:00,943 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-10-11 02:33:00,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:33:00,944 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:00,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:00,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:33:00,945 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:00,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:00,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1931368436, now seen corresponding path program 1 times [2021-10-11 02:33:00,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:00,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941405303] [2021-10-11 02:33:00,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:01,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:01,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941405303] [2021-10-11 02:33:01,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080575056] [2021-10-11 02:33:01,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d91337-b7ea-4072-9df9-fd20b1d5fd67/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:33:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:01,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-11 02:33:01,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:01,532 INFO L382 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 238 treesize of output 222 [2021-10-11 02:33:01,554 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:01,572 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:01,580 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:33:01,581 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:33, output treesize:17 [2021-10-11 02:33:01,637 INFO L382 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 14 treesize of output 10 [2021-10-11 02:33:01,638 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:01,652 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:01,655 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:33:01,656 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:30 [2021-10-11 02:33:01,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-11 02:33:01,709 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2021-10-11 02:33:01,712 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:33:01,729 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:01,732 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:33:01,732 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:41 [2021-10-11 02:33:01,870 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 02:33:01,882 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 02:33:01,899 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 02:33:01,904 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 02:33:01,909 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-10-11 02:33:01,932 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 02:33:01,935 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-10-11 02:33:01,946 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-10-11 02:33:01,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:01,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:33:02,089 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:02,090 INFO L382 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 2 case distinctions, treesize of input 438 treesize of output 334 [2021-10-11 02:33:02,096 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-10-11 02:33:02,097 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,102 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,104 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,107 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2021-10-11 02:33:02,109 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,111 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,116 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,122 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-10-11 02:33:02,124 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,126 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,131 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,135 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,137 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2021-10-11 02:33:02,138 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,139 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,146 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-10-11 02:33:02,152 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,153 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,160 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,161 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,164 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,166 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,167 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,168 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-10-11 02:33:02,171 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,172 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,174 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,177 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2021-10-11 02:33:02,179 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,181 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,183 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,186 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,189 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2021-10-11 02:33:02,191 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,193 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,200 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 5 conjuncts [2021-10-11 02:33:02,201 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2021-10-11 02:33:02,203 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,209 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,210 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,211 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,212 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2021-10-11 02:33:02,213 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,214 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,217 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,222 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-10-11 02:33:02,223 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,224 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,227 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,230 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,231 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2021-10-11 02:33:02,232 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,233 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,240 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-10-11 02:33:02,243 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,246 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,250 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,251 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,253 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,254 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,255 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-10-11 02:33:02,258 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,265 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,273 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,276 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2021-10-11 02:33:02,277 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,279 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,280 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,283 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,289 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2021-10-11 02:33:02,291 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,292 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,294 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 5 conjuncts [2021-10-11 02:33:02,296 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2021-10-11 02:33:02,297 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,301 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,302 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,303 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,304 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-10-11 02:33:02,306 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,307 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,308 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,312 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2021-10-11 02:33:02,318 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,320 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,322 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,324 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,326 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2021-10-11 02:33:02,328 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,329 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,331 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 5 conjuncts [2021-10-11 02:33:02,333 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2021-10-11 02:33:02,334 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,378 INFO L348 Elim1Store]: treesize reduction 15, result has 65.1 percent of original size [2021-10-11 02:33:02,379 INFO L382 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 2 case distinctions, treesize of input 341 treesize of output 334 [2021-10-11 02:33:02,389 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,396 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,399 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,400 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2021-10-11 02:33:02,407 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,414 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,415 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,415 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,416 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2021-10-11 02:33:02,417 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,419 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-11 02:33:02,481 INFO L625 ElimStorePlain]: treesize reduction 81, result has 28.9 percent of original size [2021-10-11 02:33:02,493 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:02,494 INFO L382 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2021-10-11 02:33:02,496 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,497 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,503 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,605 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:02,605 INFO L382 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 2 case distinctions, treesize of input 438 treesize of output 334 [2021-10-11 02:33:02,608 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-10-11 02:33:02,609 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,610 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,610 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,611 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,613 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 6 conjuncts [2021-10-11 02:33:02,614 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,614 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,615 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,616 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,618 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,619 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,620 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,622 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,637 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,638 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,639 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,640 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,642 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,643 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,644 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,646 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,647 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,653 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,654 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,658 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,660 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,661 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,662 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2021-10-11 02:33:02,665 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,666 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,667 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,669 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,670 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,671 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,672 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,676 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,677 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2021-10-11 02:33:02,678 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,679 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,681 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,689 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,690 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,691 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,693 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,695 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,696 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,698 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:02,765 INFO L348 Elim1Store]: treesize reduction 15, result has 65.1 percent of original size [2021-10-11 02:33:02,766 INFO L382 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 2 case distinctions, treesize of input 341 treesize of output 334 [2021-10-11 02:33:02,770 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-10-11 02:33:02,770 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,772 INFO L639 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2021-10-11 02:33:02,773 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,774 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,776 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,777 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,778 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,779 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,780 INFO L639 QuantifierPusher]: Distributing 4 disjuncts over 4 conjuncts [2021-10-11 02:33:02,782 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,783 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,784 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,785 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,787 INFO L639 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2021-10-11 02:33:02,788 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,788 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,790 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,792 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,798 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-10-11 02:33:02,799 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,802 INFO L639 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2021-10-11 02:33:02,807 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,808 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,811 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,812 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,814 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,814 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,815 INFO L639 QuantifierPusher]: Distributing 4 disjuncts over 4 conjuncts [2021-10-11 02:33:02,816 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,817 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,818 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,819 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,820 INFO L639 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2021-10-11 02:33:02,821 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,822 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,828 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,828 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,832 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-11 02:33:02,913 INFO L625 ElimStorePlain]: treesize reduction 105, result has 23.9 percent of original size [2021-10-11 02:33:02,932 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:33:02,933 INFO L382 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2021-10-11 02:33:02,937 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:33:02,939 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:33:02,940 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:33:03,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:03,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1742218240] [2021-10-11 02:33:03,044 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-11 02:33:03,044 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:33:03,052 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:33:03,059 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:33:03,060 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:33:03,261 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:33:03,587 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2021-10-11 02:33:04,510 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:33:04,723 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2021-10-11 02:33:04,921 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2021-10-11 02:33:05,132 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2021-10-11 02:33:05,457 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2021-10-11 02:33:05,460 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:33:05,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:33:05,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2021-10-11 02:33:05,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958601433] [2021-10-11 02:33:05,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-10-11 02:33:05,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:05,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-11 02:33:05,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2021-10-11 02:33:05,467 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 17 states. [2021-10-11 02:33:06,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:06,180 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-10-11 02:33:06,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-11 02:33:06,181 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 8 [2021-10-11 02:33:06,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:06,184 INFO L225 Difference]: With dead ends: 29 [2021-10-11 02:33:06,184 INFO L226 Difference]: Without dead ends: 27 [2021-10-11 02:33:06,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=212, Invalid=780, Unknown=0, NotChecked=0, Total=992 [2021-10-11 02:33:06,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-11 02:33:06,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 15. [2021-10-11 02:33:06,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 02:33:06,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2021-10-11 02:33:06,191 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 8 [2021-10-11 02:33:06,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:06,191 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2021-10-11 02:33:06,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-10-11 02:33:06,191 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2021-10-11 02:33:06,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:33:06,193 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:06,193 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:06,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-11 02:33:06,408 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:06,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:06,408 INFO L82 PathProgramCache]: Analyzing trace with hash 685044295, now seen corresponding path program 2 times [2021-10-11 02:33:06,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:06,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239118560] [2021-10-11 02:33:06,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:06,485 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:06,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239118560] [2021-10-11 02:33:06,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542567701] [2021-10-11 02:33:06,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d91337-b7ea-4072-9df9-fd20b1d5fd67/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:33:06,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-11 02:33:06,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:33:06,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:33:06,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:06,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:06,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:33:06,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:06,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2052755279] [2021-10-11 02:33:06,630 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-11 02:33:06,630 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:33:06,631 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:33:06,631 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:33:06,631 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:33:06,665 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:33:06,931 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2021-10-11 02:33:07,665 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:33:07,842 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2021-10-11 02:33:08,004 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2021-10-11 02:33:08,171 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2021-10-11 02:33:08,400 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2021-10-11 02:33:08,402 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:33:08,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:33:08,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2021-10-11 02:33:08,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969315485] [2021-10-11 02:33:08,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:33:08,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:08,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:33:08,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:33:08,404 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand 5 states. [2021-10-11 02:33:08,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:08,489 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2021-10-11 02:33:08,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:33:08,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2021-10-11 02:33:08,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:08,492 INFO L225 Difference]: With dead ends: 28 [2021-10-11 02:33:08,492 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 02:33:08,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:33:08,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 02:33:08,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 16. [2021-10-11 02:33:08,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 02:33:08,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-10-11 02:33:08,498 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 9 [2021-10-11 02:33:08,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:08,499 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-10-11 02:33:08,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:33:08,499 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-10-11 02:33:08,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:33:08,499 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:08,500 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:08,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-10-11 02:33:08,724 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:08,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:08,725 INFO L82 PathProgramCache]: Analyzing trace with hash -242249687, now seen corresponding path program 3 times [2021-10-11 02:33:08,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:08,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618687208] [2021-10-11 02:33:08,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:09,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:09,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618687208] [2021-10-11 02:33:09,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576069264] [2021-10-11 02:33:09,093 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d91337-b7ea-4072-9df9-fd20b1d5fd67/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:33:09,138 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-11 02:33:09,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:33:09,139 WARN L261 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-11 02:33:09,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:09,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:33:09,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:33:09,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:33:09,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [303784741] [2021-10-11 02:33:09,674 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-11 02:33:09,674 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:33:09,675 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:33:09,675 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:33:09,675 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:33:09,702 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:33:09,933 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2021-10-11 02:33:10,583 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:33:10,754 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2021-10-11 02:33:10,915 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2021-10-11 02:33:11,081 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2021-10-11 02:33:11,328 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2021-10-11 02:33:11,329 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:33:11,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:33:11,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 19 [2021-10-11 02:33:11,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042746257] [2021-10-11 02:33:11,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-10-11 02:33:11,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:11,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-11 02:33:11,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2021-10-11 02:33:11,331 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand 19 states. [2021-10-11 02:33:11,570 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2021-10-11 02:33:11,908 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-10-11 02:33:14,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:14,354 INFO L93 Difference]: Finished difference Result 80 states and 97 transitions. [2021-10-11 02:33:14,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-11 02:33:14,354 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 10 [2021-10-11 02:33:14,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:14,356 INFO L225 Difference]: With dead ends: 80 [2021-10-11 02:33:14,356 INFO L226 Difference]: Without dead ends: 78 [2021-10-11 02:33:14,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=529, Invalid=2331, Unknown=2, NotChecked=0, Total=2862 [2021-10-11 02:33:14,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-11 02:33:14,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 21. [2021-10-11 02:33:14,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:33:14,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 29 transitions. [2021-10-11 02:33:14,369 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 29 transitions. Word has length 10 [2021-10-11 02:33:14,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:14,370 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 29 transitions. [2021-10-11 02:33:14,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-10-11 02:33:14,370 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2021-10-11 02:33:14,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:33:14,370 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:14,371 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:14,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:33:14,596 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:14,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:14,596 INFO L82 PathProgramCache]: Analyzing trace with hash 2020408077, now seen corresponding path program 1 times [2021-10-11 02:33:14,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:14,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549772855] [2021-10-11 02:33:14,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:14,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:33:14,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549772855] [2021-10-11 02:33:14,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740226294] [2021-10-11 02:33:14,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d91337-b7ea-4072-9df9-fd20b1d5fd67/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:33:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:14,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:33:14,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:14,754 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:33:14,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:33:14,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:33:14,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [726214120] [2021-10-11 02:33:14,790 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-11 02:33:14,790 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:33:14,791 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:33:14,791 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:33:14,791 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:33:14,817 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:33:15,057 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2021-10-11 02:33:15,862 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:33:16,013 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2021-10-11 02:33:16,127 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2021-10-11 02:33:16,259 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2021-10-11 02:33:16,716 WARN L197 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2021-10-11 02:33:16,883 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2021-10-11 02:33:17,042 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2021-10-11 02:33:17,042 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:33:17,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:33:17,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2021-10-11 02:33:17,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69022512] [2021-10-11 02:33:17,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 02:33:17,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:17,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 02:33:17,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-10-11 02:33:17,044 INFO L87 Difference]: Start difference. First operand 21 states and 29 transitions. Second operand 10 states. [2021-10-11 02:33:17,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:17,165 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2021-10-11 02:33:17,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:33:17,166 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2021-10-11 02:33:17,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:17,167 INFO L225 Difference]: With dead ends: 42 [2021-10-11 02:33:17,167 INFO L226 Difference]: Without dead ends: 31 [2021-10-11 02:33:17,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-10-11 02:33:17,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-11 02:33:17,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2021-10-11 02:33:17,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:33:17,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 28 transitions. [2021-10-11 02:33:17,176 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 28 transitions. Word has length 11 [2021-10-11 02:33:17,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:17,176 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 28 transitions. [2021-10-11 02:33:17,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 02:33:17,176 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 28 transitions. [2021-10-11 02:33:17,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:33:17,176 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:17,176 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:17,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:33:17,377 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:17,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:17,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1310139720, now seen corresponding path program 2 times [2021-10-11 02:33:17,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:17,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40396797] [2021-10-11 02:33:17,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:33:17,425 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:33:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:33:17,452 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:33:17,470 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:33:17,470 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:33:17,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-10-11 02:33:17,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:33:17 BoogieIcfgContainer [2021-10-11 02:33:17,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:33:17,510 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:33:17,510 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:33:17,510 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:33:17,511 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:00" (3/4) ... [2021-10-11 02:33:17,513 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:33:17,578 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d91337-b7ea-4072-9df9-fd20b1d5fd67/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:33:17,578 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:33:17,579 INFO L168 Benchmark]: Toolchain (without parser) took 18232.76 ms. Allocated memory was 102.8 MB in the beginning and 218.1 MB in the end (delta: 115.3 MB). Free memory was 71.7 MB in the beginning and 109.7 MB in the end (delta: -38.0 MB). Peak memory consumption was 77.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:17,579 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 102.8 MB. Free memory was 58.9 MB in the beginning and 58.8 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:33:17,579 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.82 ms. Allocated memory is still 102.8 MB. Free memory was 71.4 MB in the beginning and 77.9 MB in the end (delta: -6.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:17,580 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.24 ms. Allocated memory is still 102.8 MB. Free memory was 77.6 MB in the beginning and 76.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:33:17,580 INFO L168 Benchmark]: Boogie Preprocessor took 25.84 ms. Allocated memory is still 102.8 MB. Free memory was 76.2 MB in the beginning and 75.2 MB in the end (delta: 997.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:17,581 INFO L168 Benchmark]: RCFGBuilder took 579.48 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 74.8 MB in the beginning and 100.0 MB in the end (delta: -25.2 MB). Peak memory consumption was 27.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:17,581 INFO L168 Benchmark]: TraceAbstraction took 17268.62 ms. Allocated memory was 123.7 MB in the beginning and 218.1 MB in the end (delta: 94.4 MB). Free memory was 99.5 MB in the beginning and 111.8 MB in the end (delta: -12.3 MB). Peak memory consumption was 82.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:17,582 INFO L168 Benchmark]: Witness Printer took 67.79 ms. Allocated memory is still 218.1 MB. Free memory was 111.8 MB in the beginning and 109.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:17,584 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 102.8 MB. Free memory was 58.9 MB in the beginning and 58.8 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 240.82 ms. Allocated memory is still 102.8 MB. Free memory was 71.4 MB in the beginning and 77.9 MB in the end (delta: -6.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.24 ms. Allocated memory is still 102.8 MB. Free memory was 77.6 MB in the beginning and 76.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.84 ms. Allocated memory is still 102.8 MB. Free memory was 76.2 MB in the beginning and 75.2 MB in the end (delta: 997.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 579.48 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 74.8 MB in the beginning and 100.0 MB in the end (delta: -25.2 MB). Peak memory consumption was 27.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 17268.62 ms. Allocated memory was 123.7 MB in the beginning and 218.1 MB in the end (delta: 94.4 MB). Free memory was 99.5 MB in the beginning and 111.8 MB in the end (delta: -12.3 MB). Peak memory consumption was 82.7 MB. Max. memory is 16.1 GB. * Witness Printer took 67.79 ms. Allocated memory is still 218.1 MB. Free memory was 111.8 MB in the beginning and 109.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] int MAX = __VERIFIER_nondet_uint(); [L17] COND FALSE !(!(MAX > 0)) [L18] char str1[MAX], str2[MAX]; [L19] int cont, i, j; [L20] cont = 0 [L22] i=0 [L22] COND TRUE i= 0 [L30] EXPR str1[0] [L30] str2[j] = str1[0] [L31] j++ [L29] i-- [L29] COND TRUE i >= 0 [L30] EXPR str1[0] [L30] str2[j] = str1[0] [L31] j++ [L29] i-- [L29] COND FALSE !(i >= 0) [L34] j = MAX-1 [L35] i=0 [L35] COND TRUE i