./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_copy5_ground-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_copy5_ground-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI --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 0541c5d3cb2bb522edbd5a6d03bcb344a1d82e4bcd281d695c3c7a0d3bc33956 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 04:10:25,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:10:25,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:10:25,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:10:25,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:10:25,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:10:25,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:10:25,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:10:25,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:10:25,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:10:25,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:10:25,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:10:25,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:10:25,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:10:25,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:10:25,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:10:25,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:10:25,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:10:25,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:10:25,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:10:25,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:10:25,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:10:25,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:10:25,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:10:26,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:10:26,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:10:26,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:10:26,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:10:26,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:10:26,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:10:26,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:10:26,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:10:26,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:10:26,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:10:26,012 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:10:26,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:10:26,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:10:26,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:10:26,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:10:26,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:10:26,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:10:26,016 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 04:10:26,060 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:10:26,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:10:26,061 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:10:26,061 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:10:26,062 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:10:26,062 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:10:26,062 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:10:26,063 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:10:26,063 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:10:26,063 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:10:26,064 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:10:26,065 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:10:26,065 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:10:26,065 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:10:26,065 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:10:26,066 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:10:26,066 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:10:26,066 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:10:26,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:10:26,067 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:10:26,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:10:26,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:10:26,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:10:26,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:10:26,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:10:26,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:10:26,069 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:10:26,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:10:26,069 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:10:26,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:10:26,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:10:26,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:10:26,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:10:26,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:10:26,071 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:10:26,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:10:26,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:10:26,072 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:10:26,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:10:26,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:10:26,072 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:10:26,072 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0541c5d3cb2bb522edbd5a6d03bcb344a1d82e4bcd281d695c3c7a0d3bc33956 [2022-11-03 04:10:26,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:10:26,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:10:26,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:10:26,417 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:10:26,418 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:10:26,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/array-examples/standard_copy5_ground-2.i [2022-11-03 04:10:26,493 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/data/d5f713acb/8ceb7336e94b4204896a5699282dae95/FLAGdcd7faf3c [2022-11-03 04:10:27,038 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:10:27,041 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/sv-benchmarks/c/array-examples/standard_copy5_ground-2.i [2022-11-03 04:10:27,054 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/data/d5f713acb/8ceb7336e94b4204896a5699282dae95/FLAGdcd7faf3c [2022-11-03 04:10:27,370 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/data/d5f713acb/8ceb7336e94b4204896a5699282dae95 [2022-11-03 04:10:27,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:10:27,378 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:10:27,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:10:27,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:10:27,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:10:27,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:10:27" (1/1) ... [2022-11-03 04:10:27,389 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44297cef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:27, skipping insertion in model container [2022-11-03 04:10:27,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:10:27" (1/1) ... [2022-11-03 04:10:27,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:10:27,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:10:27,582 WARN L230 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_6dc35625-dcb5-497c-9ea9-f2f731928cec/sv-benchmarks/c/array-examples/standard_copy5_ground-2.i[816,829] [2022-11-03 04:10:27,641 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:10:27,649 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:10:27,667 WARN L230 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_6dc35625-dcb5-497c-9ea9-f2f731928cec/sv-benchmarks/c/array-examples/standard_copy5_ground-2.i[816,829] [2022-11-03 04:10:27,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:10:27,701 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:10:27,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:27 WrapperNode [2022-11-03 04:10:27,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:10:27,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:10:27,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:10:27,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:10:27,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:27" (1/1) ... [2022-11-03 04:10:27,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:27" (1/1) ... [2022-11-03 04:10:27,745 INFO L138 Inliner]: procedures = 16, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 131 [2022-11-03 04:10:27,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:10:27,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:10:27,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:10:27,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:10:27,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:27" (1/1) ... [2022-11-03 04:10:27,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:27" (1/1) ... [2022-11-03 04:10:27,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:27" (1/1) ... [2022-11-03 04:10:27,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:27" (1/1) ... [2022-11-03 04:10:27,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:27" (1/1) ... [2022-11-03 04:10:27,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:27" (1/1) ... [2022-11-03 04:10:27,773 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:27" (1/1) ... [2022-11-03 04:10:27,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:27" (1/1) ... [2022-11-03 04:10:27,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:10:27,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:10:27,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:10:27,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:10:27,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:27" (1/1) ... [2022-11-03 04:10:27,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:10:27,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:10:27,811 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:10:27,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:10:27,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:10:27,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:10:27,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 04:10:27,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 04:10:27,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:10:27,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:10:27,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 04:10:27,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 04:10:27,950 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:10:27,952 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:10:28,151 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:10:28,242 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:10:28,242 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-03 04:10:28,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:10:28 BoogieIcfgContainer [2022-11-03 04:10:28,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:10:28,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:10:28,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:10:28,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:10:28,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:10:27" (1/3) ... [2022-11-03 04:10:28,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d310c97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:10:28, skipping insertion in model container [2022-11-03 04:10:28,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:27" (2/3) ... [2022-11-03 04:10:28,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d310c97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:10:28, skipping insertion in model container [2022-11-03 04:10:28,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:10:28" (3/3) ... [2022-11-03 04:10:28,272 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy5_ground-2.i [2022-11-03 04:10:28,307 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:10:28,307 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:10:28,393 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:10:28,407 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@16e51d17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:10:28,408 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:10:28,412 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:10:28,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 04:10:28,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:28,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:10:28,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:10:28,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:28,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1056001588, now seen corresponding path program 1 times [2022-11-03 04:10:28,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:10:28,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973009824] [2022-11-03 04:10:28,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:28,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:10:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:28,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:10:28,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:10:28,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973009824] [2022-11-03 04:10:28,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973009824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:10:28,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:10:28,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:10:28,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028228227] [2022-11-03 04:10:28,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:10:28,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:10:28,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:10:28,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:10:28,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:10:28,916 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:10:29,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:29,013 INFO L93 Difference]: Finished difference Result 25 states and 39 transitions. [2022-11-03 04:10:29,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:10:29,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-03 04:10:29,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:29,035 INFO L225 Difference]: With dead ends: 25 [2022-11-03 04:10:29,035 INFO L226 Difference]: Without dead ends: 13 [2022-11-03 04:10:29,040 INFO L412 NwaCegarLoop]: 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 [2022-11-03 04:10:29,046 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:29,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:10:29,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-03 04:10:29,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-03 04:10:29,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:10:29,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2022-11-03 04:10:29,087 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 19 transitions. Word has length 10 [2022-11-03 04:10:29,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:29,087 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-11-03 04:10:29,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:10:29,089 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 19 transitions. [2022-11-03 04:10:29,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 04:10:29,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:29,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:10:29,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:10:29,092 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:10:29,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:29,095 INFO L85 PathProgramCache]: Analyzing trace with hash -830149624, now seen corresponding path program 1 times [2022-11-03 04:10:29,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:10:29,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700366376] [2022-11-03 04:10:29,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:29,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:10:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:29,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:10:29,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:10:29,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700366376] [2022-11-03 04:10:29,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700366376] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:10:29,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389779508] [2022-11-03 04:10:29,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:29,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:10:29,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:10:29,253 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:10:29,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 04:10:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:29,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 04:10:29,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:29,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 04:10:29,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:10:29,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389779508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:10:29,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:10:29,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-03 04:10:29,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731862149] [2022-11-03 04:10:29,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:10:29,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:10:29,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:10:29,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:10:29,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:10:29,428 INFO L87 Difference]: Start difference. First operand 13 states and 19 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:10:29,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:29,471 INFO L93 Difference]: Finished difference Result 27 states and 42 transitions. [2022-11-03 04:10:29,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:10:29,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 04:10:29,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:29,472 INFO L225 Difference]: With dead ends: 27 [2022-11-03 04:10:29,473 INFO L226 Difference]: Without dead ends: 18 [2022-11-03 04:10:29,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:10:29,475 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:29,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:10:29,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-03 04:10:29,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-03 04:10:29,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:10:29,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2022-11-03 04:10:29,480 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 11 [2022-11-03 04:10:29,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:29,480 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2022-11-03 04:10:29,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:10:29,481 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2022-11-03 04:10:29,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 04:10:29,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:29,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:10:29,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 04:10:29,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:10:29,703 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:10:29,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:29,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1681103082, now seen corresponding path program 1 times [2022-11-03 04:10:29,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:10:29,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218984900] [2022-11-03 04:10:29,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:29,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:10:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:29,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-03 04:10:29,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:10:29,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218984900] [2022-11-03 04:10:29,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218984900] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:10:29,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67713767] [2022-11-03 04:10:29,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:29,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:10:29,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:10:29,805 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:10:29,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 04:10:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:29,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:10:29,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:29,997 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-03 04:10:29,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:10:30,035 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-03 04:10:30,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67713767] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:10:30,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [993118178] [2022-11-03 04:10:30,065 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-03 04:10:30,066 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:10:30,070 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:10:30,076 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:10:30,076 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:10:30,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:30,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:30,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:30,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:30,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:30,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:30,604 INFO L356 Elim1Store]: treesize reduction 528, result has 9.4 percent of original size [2022-11-03 04:10:30,605 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 32 case distinctions, treesize of input 127 treesize of output 157 [2022-11-03 04:10:30,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:30,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:30,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:30,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:30,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:30,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:30,678 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 34 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 47 [2022-11-03 04:10:30,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:30,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:30,883 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 16 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-11-03 04:10:31,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:31,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:31,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:31,347 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:31,349 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:31,461 INFO L356 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-11-03 04:10:31,462 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 588 treesize of output 578 [2022-11-03 04:10:32,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:32,797 INFO L356 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-11-03 04:10:32,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2022-11-03 04:10:32,846 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:10:32,848 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:10:32,910 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:32,911 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:32,960 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 04:10:32,961 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 113 [2022-11-03 04:10:33,039 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:33,050 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:33,051 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:33,072 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:33,086 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:33,086 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:33,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:33,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:33,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:33,158 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:10:33,158 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:10:33,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:33,229 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:33,230 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:33,292 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:10:33,294 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:10:33,357 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:33,358 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:33,417 INFO L356 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-11-03 04:10:33,422 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 123 [2022-11-03 04:10:33,510 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:33,525 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:33,526 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:33,558 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:10:33,559 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:10:33,600 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:33,604 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:33,658 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 04:10:33,659 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 113 [2022-11-03 04:10:33,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:33,777 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:33,777 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:33,801 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:33,812 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:33,812 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:33,852 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:33,854 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:33,873 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:10:33,873 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:10:33,914 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:33,925 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:33,926 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:33,952 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:10:34,264 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '287#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_#t~mem15#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem16#1| |ULTIMATE.start_main_#t~mem15#1|) 1 0)) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_#t~mem16#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a6~0#1.base|) (+ |ULTIMATE.start_main_~#a6~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 04:10:34,264 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:10:34,264 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:10:34,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-03 04:10:34,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463966594] [2022-11-03 04:10:34,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:10:34,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:10:34,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:10:34,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:10:34,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-03 04:10:34,267 INFO L87 Difference]: Start difference. First operand 18 states and 24 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:10:34,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:34,328 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2022-11-03 04:10:34,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:10:34,329 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-03 04:10:34,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:34,329 INFO L225 Difference]: With dead ends: 36 [2022-11-03 04:10:34,330 INFO L226 Difference]: Without dead ends: 21 [2022-11-03 04:10:34,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-03 04:10:34,331 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:34,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:10:34,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-03 04:10:34,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-03 04:10:34,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:10:34,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2022-11-03 04:10:34,336 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 16 [2022-11-03 04:10:34,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:34,336 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2022-11-03 04:10:34,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:10:34,336 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2022-11-03 04:10:34,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 04:10:34,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:34,337 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:10:34,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 04:10:34,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:10:34,538 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:10:34,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:34,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1618588462, now seen corresponding path program 2 times [2022-11-03 04:10:34,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:10:34,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012522340] [2022-11-03 04:10:34,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:34,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:10:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:34,661 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 04:10:34,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:10:34,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012522340] [2022-11-03 04:10:34,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012522340] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:10:34,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619863302] [2022-11-03 04:10:34,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 04:10:34,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:10:34,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:10:34,664 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:10:34,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 04:10:34,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-03 04:10:34,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:10:34,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:10:34,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:34,815 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 04:10:34,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:10:34,832 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 04:10:34,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619863302] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:10:34,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [208541362] [2022-11-03 04:10:34,837 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-03 04:10:34,838 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:10:34,838 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:10:34,839 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:10:34,839 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:10:34,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:34,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:34,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:34,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:34,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:34,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:35,197 INFO L356 Elim1Store]: treesize reduction 528, result has 9.4 percent of original size [2022-11-03 04:10:35,198 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 32 case distinctions, treesize of input 127 treesize of output 157 [2022-11-03 04:10:35,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:35,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:35,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:35,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:35,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:35,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:35,243 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 34 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 47 [2022-11-03 04:10:35,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:35,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:35,310 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 16 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-11-03 04:10:35,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:35,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:35,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:35,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:35,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:35,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:35,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:35,568 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:35,624 INFO L356 Elim1Store]: treesize reduction 135, result has 12.9 percent of original size [2022-11-03 04:10:35,625 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 608 treesize of output 576 [2022-11-03 04:10:35,819 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:35,834 INFO L356 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-11-03 04:10:35,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2022-11-03 04:10:35,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:35,885 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:35,885 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:35,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:35,923 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:35,924 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:35,939 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:10:35,940 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:10:36,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:36,015 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:36,015 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:36,053 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:36,063 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:36,064 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:36,100 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:36,101 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:36,116 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:10:36,116 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:10:36,170 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:36,183 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:36,184 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:36,221 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:36,231 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:36,232 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:36,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:36,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:36,302 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:36,316 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:10:36,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:10:36,356 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:36,368 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:36,368 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:36,404 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:10:36,407 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:10:36,447 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:36,448 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:36,516 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 04:10:36,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 113 [2022-11-03 04:10:36,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:36,576 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:36,576 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:36,604 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:10:36,604 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:10:36,643 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:36,644 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:36,691 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 04:10:36,691 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 113 [2022-11-03 04:10:36,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:36,754 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:36,755 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:36,776 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:10:37,380 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '507#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_#t~mem15#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem16#1| |ULTIMATE.start_main_#t~mem15#1|) 1 0)) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_#t~mem16#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a6~0#1.base|) (+ |ULTIMATE.start_main_~#a6~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 04:10:37,381 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:10:37,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:10:37,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-03 04:10:37,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234837382] [2022-11-03 04:10:37,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:10:37,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:10:37,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:10:37,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:10:37,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-03 04:10:37,383 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:10:37,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:37,506 INFO L93 Difference]: Finished difference Result 49 states and 74 transitions. [2022-11-03 04:10:37,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:10:37,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-03 04:10:37,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:37,507 INFO L225 Difference]: With dead ends: 49 [2022-11-03 04:10:37,507 INFO L226 Difference]: Without dead ends: 36 [2022-11-03 04:10:37,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-03 04:10:37,509 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:37,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:10:37,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-03 04:10:37,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-03 04:10:37,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2) internal successors, (42), 35 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:10:37,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-11-03 04:10:37,516 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 19 [2022-11-03 04:10:37,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:37,516 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-11-03 04:10:37,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:10:37,516 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-11-03 04:10:37,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 04:10:37,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:37,517 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:10:37,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 04:10:37,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:10:37,731 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:10:37,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:37,731 INFO L85 PathProgramCache]: Analyzing trace with hash -970063028, now seen corresponding path program 3 times [2022-11-03 04:10:37,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:10:37,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120343007] [2022-11-03 04:10:37,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:37,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:10:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:38,046 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-03 04:10:38,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:10:38,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120343007] [2022-11-03 04:10:38,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120343007] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:10:38,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770814001] [2022-11-03 04:10:38,047 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 04:10:38,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:10:38,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:10:38,051 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:10:38,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 04:10:38,204 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 04:10:38,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:10:38,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:10:38,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:38,224 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-03 04:10:38,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:10:38,282 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-03 04:10:38,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770814001] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:10:38,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1042747246] [2022-11-03 04:10:38,285 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-03 04:10:38,286 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:10:38,286 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:10:38,286 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:10:38,286 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:10:38,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:38,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:38,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:38,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:38,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:38,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:38,533 INFO L356 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2022-11-03 04:10:38,533 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 66 [2022-11-03 04:10:38,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:38,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:38,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:38,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:38,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:38,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:38,895 INFO L356 Elim1Store]: treesize reduction 528, result has 9.4 percent of original size [2022-11-03 04:10:38,896 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 32 case distinctions, treesize of input 127 treesize of output 157 [2022-11-03 04:10:38,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:38,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:38,986 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 16 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-11-03 04:10:39,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:39,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:39,203 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:39,204 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:39,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:39,291 INFO L356 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-11-03 04:10:39,292 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 588 treesize of output 578 [2022-11-03 04:10:40,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:40,175 INFO L356 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-11-03 04:10:40,176 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2022-11-03 04:10:40,207 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:10:40,207 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:10:40,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:40,249 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:40,294 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 04:10:40,295 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 113 [2022-11-03 04:10:40,364 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:40,375 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:40,375 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:40,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:40,401 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:40,402 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:40,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:40,438 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:40,452 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:10:40,452 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:10:40,498 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:40,510 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:40,510 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:40,565 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:40,575 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:40,575 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:40,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:40,610 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:40,611 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:40,625 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:10:40,625 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:10:40,666 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:40,677 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:40,678 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:40,709 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:10:40,709 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:10:40,750 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:40,752 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:40,815 INFO L356 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-11-03 04:10:40,815 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 123 [2022-11-03 04:10:40,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:40,945 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:40,945 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:40,979 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:10:40,980 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:10:41,016 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:41,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:41,063 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 04:10:41,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 113 [2022-11-03 04:10:41,132 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:41,142 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:41,143 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:41,159 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:10:41,527 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '879#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_#t~mem15#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem16#1| |ULTIMATE.start_main_#t~mem15#1|) 1 0)) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_#t~mem16#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a6~0#1.base|) (+ |ULTIMATE.start_main_~#a6~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 04:10:41,527 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:10:41,527 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:10:41,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-03 04:10:41,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371012794] [2022-11-03 04:10:41,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:10:41,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 04:10:41,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:10:41,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 04:10:41,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2022-11-03 04:10:41,529 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:10:41,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:41,636 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2022-11-03 04:10:41,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:10:41,637 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-03 04:10:41,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:41,638 INFO L225 Difference]: With dead ends: 72 [2022-11-03 04:10:41,638 INFO L226 Difference]: Without dead ends: 42 [2022-11-03 04:10:41,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 85 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2022-11-03 04:10:41,641 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:41,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:10:41,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-03 04:10:41,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-11-03 04:10:41,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.170731707317073) internal successors, (48), 41 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:10:41,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2022-11-03 04:10:41,654 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 34 [2022-11-03 04:10:41,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:41,654 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2022-11-03 04:10:41,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:10:41,654 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2022-11-03 04:10:41,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-03 04:10:41,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:41,656 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:10:41,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 04:10:41,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:10:41,865 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:10:41,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:41,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1145354700, now seen corresponding path program 4 times [2022-11-03 04:10:41,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:10:41,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113938049] [2022-11-03 04:10:41,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:41,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:10:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:42,185 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-03 04:10:42,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:10:42,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113938049] [2022-11-03 04:10:42,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113938049] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:10:42,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553068550] [2022-11-03 04:10:42,186 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 04:10:42,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:10:42,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:10:42,187 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:10:42,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 04:10:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:42,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:10:42,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:42,403 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-03 04:10:42,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:10:42,591 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-03 04:10:42,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553068550] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:10:42,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1902078741] [2022-11-03 04:10:42,594 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-03 04:10:42,594 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:10:42,594 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:10:42,595 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:10:42,595 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:10:42,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:42,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:42,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:42,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:42,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:42,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:42,859 INFO L356 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2022-11-03 04:10:42,860 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 66 [2022-11-03 04:10:42,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:42,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:42,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:42,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:42,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:42,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:43,174 INFO L356 Elim1Store]: treesize reduction 528, result has 9.4 percent of original size [2022-11-03 04:10:43,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 32 case distinctions, treesize of input 127 treesize of output 157 [2022-11-03 04:10:43,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:43,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:43,248 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 16 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-11-03 04:10:43,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:43,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:43,425 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:43,426 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:43,427 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:43,523 INFO L356 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-11-03 04:10:43,523 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 588 treesize of output 578 [2022-11-03 04:10:44,241 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:44,253 INFO L356 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-11-03 04:10:44,253 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2022-11-03 04:10:44,282 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:44,292 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:44,292 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:44,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:44,328 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:44,329 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:44,343 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:10:44,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:10:44,396 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:44,409 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:44,409 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:44,448 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:44,459 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:44,459 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:44,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:44,492 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:44,493 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:44,507 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:10:44,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:10:44,562 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:44,576 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:44,577 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:44,625 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:10:44,625 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:10:44,671 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:44,672 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:44,720 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 04:10:44,721 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 113 [2022-11-03 04:10:44,793 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:44,803 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:44,803 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:44,821 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:44,831 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:44,832 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:44,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:44,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:44,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:44,900 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:10:44,900 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:10:44,944 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:44,955 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:44,955 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:44,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:44,988 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:44,989 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:45,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:45,020 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:45,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:45,035 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:10:45,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:10:45,072 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:45,082 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:45,083 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:45,099 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:10:45,780 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1357#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_#t~mem15#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem16#1| |ULTIMATE.start_main_#t~mem15#1|) 1 0)) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_#t~mem16#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a6~0#1.base|) (+ |ULTIMATE.start_main_~#a6~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 04:10:45,780 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:10:45,781 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:10:45,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2022-11-03 04:10:45,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110057876] [2022-11-03 04:10:45,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:10:45,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 04:10:45,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:10:45,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 04:10:45,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=550, Unknown=0, NotChecked=0, Total=870 [2022-11-03 04:10:45,783 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 25 states, 25 states have (on average 1.56) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:10:45,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:45,872 INFO L93 Difference]: Finished difference Result 84 states and 107 transitions. [2022-11-03 04:10:45,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 04:10:45,873 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-11-03 04:10:45,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:45,874 INFO L225 Difference]: With dead ends: 84 [2022-11-03 04:10:45,874 INFO L226 Difference]: Without dead ends: 54 [2022-11-03 04:10:45,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 87 SyntacticMatches, 15 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=320, Invalid=550, Unknown=0, NotChecked=0, Total=870 [2022-11-03 04:10:45,875 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:45,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:10:45,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-03 04:10:45,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-11-03 04:10:45,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.1320754716981132) internal successors, (60), 53 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:10:45,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2022-11-03 04:10:45,883 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 40 [2022-11-03 04:10:45,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:45,884 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2022-11-03 04:10:45,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:10:45,884 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2022-11-03 04:10:45,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-03 04:10:45,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:45,886 INFO L195 NwaCegarLoop]: trace histogram [22, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:10:45,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-03 04:10:46,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 04:10:46,095 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:10:46,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:46,095 INFO L85 PathProgramCache]: Analyzing trace with hash -263092532, now seen corresponding path program 5 times [2022-11-03 04:10:46,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:10:46,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225143023] [2022-11-03 04:10:46,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:46,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:10:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:46,993 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-03 04:10:46,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:10:46,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225143023] [2022-11-03 04:10:46,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225143023] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:10:46,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730649197] [2022-11-03 04:10:46,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 04:10:46,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:10:46,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:10:46,995 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:10:46,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 04:10:47,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 04:10:47,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:10:47,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:10:47,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:47,421 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-11-03 04:10:47,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:10:47,535 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-11-03 04:10:47,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730649197] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:10:47,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1426639059] [2022-11-03 04:10:47,538 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-03 04:10:47,538 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:10:47,538 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:10:47,538 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:10:47,538 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:10:47,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:47,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:47,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:47,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:47,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:47,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:47,775 INFO L356 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2022-11-03 04:10:47,776 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 66 [2022-11-03 04:10:47,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:47,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:47,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:47,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:47,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:47,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:48,089 INFO L356 Elim1Store]: treesize reduction 528, result has 9.4 percent of original size [2022-11-03 04:10:48,090 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 32 case distinctions, treesize of input 127 treesize of output 157 [2022-11-03 04:10:48,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:48,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:48,164 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 16 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-11-03 04:10:48,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:48,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:48,360 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:48,361 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:48,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:48,450 INFO L356 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-11-03 04:10:48,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 588 treesize of output 578 [2022-11-03 04:10:49,154 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:49,166 INFO L356 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-11-03 04:10:49,166 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2022-11-03 04:10:49,195 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:10:49,196 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:10:49,228 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:49,229 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:49,287 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 04:10:49,287 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 113 [2022-11-03 04:10:49,364 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:49,375 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:49,376 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:49,405 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:10:49,405 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:10:49,440 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:49,441 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:49,493 INFO L356 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-11-03 04:10:49,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 123 [2022-11-03 04:10:49,560 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:49,571 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:49,571 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:49,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:49,612 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:49,613 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:49,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:49,651 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:49,652 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:49,666 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:10:49,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:10:49,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:49,707 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:49,708 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:49,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:49,737 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:49,737 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:49,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:49,774 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:49,775 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:49,789 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:10:49,790 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:10:49,821 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:49,831 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:49,831 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:49,852 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:49,861 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:49,861 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:49,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:49,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:49,889 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:49,902 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:10:49,903 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:10:49,940 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:49,949 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:49,950 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:49,965 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:10:50,310 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1965#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_#t~mem15#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem16#1| |ULTIMATE.start_main_#t~mem15#1|) 1 0)) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_#t~mem16#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a6~0#1.base|) (+ |ULTIMATE.start_main_~#a6~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 04:10:50,311 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:10:50,311 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:10:50,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 7, 7] total 35 [2022-11-03 04:10:50,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121824092] [2022-11-03 04:10:50,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:10:50,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-03 04:10:50,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:10:50,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-03 04:10:50,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=1175, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 04:10:50,314 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:10:50,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:50,606 INFO L93 Difference]: Finished difference Result 115 states and 157 transitions. [2022-11-03 04:10:50,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-03 04:10:50,607 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-11-03 04:10:50,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:50,607 INFO L225 Difference]: With dead ends: 115 [2022-11-03 04:10:50,608 INFO L226 Difference]: Without dead ends: 85 [2022-11-03 04:10:50,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=385, Invalid=1175, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 04:10:50,609 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:50,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:10:50,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-03 04:10:50,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-11-03 04:10:50,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.0833333333333333) internal successors, (91), 84 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:10:50,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2022-11-03 04:10:50,629 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 52 [2022-11-03 04:10:50,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:50,630 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2022-11-03 04:10:50,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:10:50,636 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2022-11-03 04:10:50,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-03 04:10:50,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:50,641 INFO L195 NwaCegarLoop]: trace histogram [23, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:10:50,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 04:10:50,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-03 04:10:50,851 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:10:50,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:50,851 INFO L85 PathProgramCache]: Analyzing trace with hash 2056933576, now seen corresponding path program 6 times [2022-11-03 04:10:50,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:10:50,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090383663] [2022-11-03 04:10:50,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:50,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:10:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:52,063 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-11-03 04:10:52,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:10:52,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090383663] [2022-11-03 04:10:52,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090383663] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:10:52,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159185735] [2022-11-03 04:10:52,064 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 04:10:52,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:10:52,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:10:52,066 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:10:52,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 04:10:52,397 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 04:10:52,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:10:52,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 04:10:52,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:52,471 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-11-03 04:10:52,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:10:53,423 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-11-03 04:10:53,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159185735] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:10:53,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [613908162] [2022-11-03 04:10:53,426 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-03 04:10:53,426 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:10:53,426 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:10:53,427 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:10:53,427 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:10:53,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:53,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:53,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:53,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:53,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:53,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:53,754 INFO L356 Elim1Store]: treesize reduction 528, result has 9.4 percent of original size [2022-11-03 04:10:53,755 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 32 case distinctions, treesize of input 127 treesize of output 157 [2022-11-03 04:10:53,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:53,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:53,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:53,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:53,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:53,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:53,812 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 34 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 47 [2022-11-03 04:10:53,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:53,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:53,905 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 16 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-11-03 04:10:54,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:54,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:54,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:54,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:54,179 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:54,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:54,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:54,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:54,241 INFO L356 Elim1Store]: treesize reduction 135, result has 12.9 percent of original size [2022-11-03 04:10:54,242 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 608 treesize of output 576 [2022-11-03 04:10:54,417 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:54,432 INFO L356 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-11-03 04:10:54,433 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2022-11-03 04:10:54,483 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:10:54,483 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:10:54,527 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:54,529 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:54,589 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 04:10:54,590 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 113 [2022-11-03 04:10:54,662 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:54,677 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:54,677 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:54,697 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:54,708 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:54,709 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:54,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:10:54,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:54,745 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:54,761 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:10:54,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:10:54,826 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:54,839 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:54,840 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:54,884 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:10:54,884 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:10:54,929 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:54,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:54,998 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 04:10:54,998 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 113 [2022-11-03 04:10:55,067 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:55,078 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:55,078 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:55,106 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:10:55,107 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:10:55,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:55,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:55,216 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 04:10:55,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 113 [2022-11-03 04:10:55,285 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:55,296 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:55,296 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:55,323 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:10:55,324 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:10:55,361 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:55,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:55,412 INFO L356 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-11-03 04:10:55,413 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 123 [2022-11-03 04:10:55,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:10:55,504 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:10:55,505 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:10:55,531 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:10:56,442 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2899#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_#t~mem15#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem16#1| |ULTIMATE.start_main_#t~mem15#1|) 1 0)) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_#t~mem16#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a6~0#1.base|) (+ |ULTIMATE.start_main_~#a6~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 04:10:56,443 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:10:56,443 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:10:56,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 50 [2022-11-03 04:10:56,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301254112] [2022-11-03 04:10:56,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:10:56,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-03 04:10:56,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:10:56,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-03 04:10:56,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1295, Invalid=1785, Unknown=0, NotChecked=0, Total=3080 [2022-11-03 04:10:56,447 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 50 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:10:56,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:56,594 INFO L93 Difference]: Finished difference Result 170 states and 206 transitions. [2022-11-03 04:10:56,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-03 04:10:56,595 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 50 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-11-03 04:10:56,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:56,602 INFO L225 Difference]: With dead ends: 170 [2022-11-03 04:10:56,602 INFO L226 Difference]: Without dead ends: 110 [2022-11-03 04:10:56,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 207 SyntacticMatches, 11 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1244 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1295, Invalid=1785, Unknown=0, NotChecked=0, Total=3080 [2022-11-03 04:10:56,604 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:56,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:10:56,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-03 04:10:56,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-11-03 04:10:56,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.0642201834862386) internal successors, (116), 109 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:10:56,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 116 transitions. [2022-11-03 04:10:56,630 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 116 transitions. Word has length 83 [2022-11-03 04:10:56,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:56,630 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 116 transitions. [2022-11-03 04:10:56,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 50 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:10:56,631 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 116 transitions. [2022-11-03 04:10:56,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-03 04:10:56,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:56,634 INFO L195 NwaCegarLoop]: trace histogram [48, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:10:56,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 04:10:56,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:10:56,852 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:10:56,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:56,853 INFO L85 PathProgramCache]: Analyzing trace with hash -706817012, now seen corresponding path program 7 times [2022-11-03 04:10:56,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:10:56,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203684147] [2022-11-03 04:10:56,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:56,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:10:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:00,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1451 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-11-03 04:11:00,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:00,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203684147] [2022-11-03 04:11:00,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203684147] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:11:00,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718376221] [2022-11-03 04:11:00,191 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 04:11:00,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:11:00,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:11:00,192 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:11:00,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 04:11:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:00,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 1311 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-03 04:11:00,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:00,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1451 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-11-03 04:11:00,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:11:03,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1451 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-11-03 04:11:03,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718376221] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:11:03,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1535038047] [2022-11-03 04:11:03,724 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-03 04:11:03,724 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:11:03,725 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:11:03,725 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:11:03,725 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:11:03,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:03,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:03,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:03,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:03,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:03,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:03,935 INFO L356 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2022-11-03 04:11:03,935 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 66 [2022-11-03 04:11:03,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:03,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:03,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:03,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:03,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:03,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:04,232 INFO L356 Elim1Store]: treesize reduction 528, result has 9.4 percent of original size [2022-11-03 04:11:04,232 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 32 case distinctions, treesize of input 127 treesize of output 157 [2022-11-03 04:11:04,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:04,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:04,311 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 16 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-11-03 04:11:04,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:04,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:04,517 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:04,518 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:04,519 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:04,604 INFO L356 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-11-03 04:11:04,605 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 588 treesize of output 578 [2022-11-03 04:11:05,285 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:05,295 INFO L356 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-11-03 04:11:05,296 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2022-11-03 04:11:05,316 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:05,325 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:11:05,326 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:11:05,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:05,359 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:05,360 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:05,373 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:11:05,373 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:11:05,427 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:05,447 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:11:05,447 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:11:05,474 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:05,484 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:11:05,484 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:11:05,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:05,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:05,525 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:05,538 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:11:05,538 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:11:05,585 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:05,597 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:11:05,597 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:11:05,632 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:05,642 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:11:05,643 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:11:05,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:05,679 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:05,680 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:05,695 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:11:05,695 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:11:05,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:05,736 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:11:05,736 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:11:05,754 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:05,763 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:11:05,764 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:11:05,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:05,799 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:05,800 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:05,815 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:11:05,815 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:11:05,848 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:05,857 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:11:05,858 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:11:05,881 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:11:05,881 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:11:05,917 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:05,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:05,962 INFO L356 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-11-03 04:11:05,962 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 123 [2022-11-03 04:11:06,058 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:06,068 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:11:06,068 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:11:06,083 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:11:08,172 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4193#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_#t~mem15#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem16#1| |ULTIMATE.start_main_#t~mem15#1|) 1 0)) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_#t~mem16#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a6~0#1.base|) (+ |ULTIMATE.start_main_~#a6~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 04:11:08,172 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:11:08,172 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:11:08,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 100 [2022-11-03 04:11:08,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371689559] [2022-11-03 04:11:08,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:11:08,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-11-03 04:11:08,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:08,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-11-03 04:11:08,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5070, Invalid=6060, Unknown=0, NotChecked=0, Total=11130 [2022-11-03 04:11:08,179 INFO L87 Difference]: Start difference. First operand 110 states and 116 transitions. Second operand has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 100 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:11:08,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:08,415 INFO L93 Difference]: Finished difference Result 220 states and 281 transitions. [2022-11-03 04:11:08,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-11-03 04:11:08,416 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 100 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-11-03 04:11:08,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:08,417 INFO L225 Difference]: With dead ends: 220 [2022-11-03 04:11:08,417 INFO L226 Difference]: Without dead ends: 160 [2022-11-03 04:11:08,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 235 SyntacticMatches, 33 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5778 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=5070, Invalid=6060, Unknown=0, NotChecked=0, Total=11130 [2022-11-03 04:11:08,421 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:08,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:11:08,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-03 04:11:08,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-11-03 04:11:08,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.0440251572327044) internal successors, (166), 159 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:11:08,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 166 transitions. [2022-11-03 04:11:08,450 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 166 transitions. Word has length 108 [2022-11-03 04:11:08,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:08,452 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 166 transitions. [2022-11-03 04:11:08,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 100 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:11:08,453 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 166 transitions. [2022-11-03 04:11:08,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 04:11:08,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:08,462 INFO L195 NwaCegarLoop]: trace histogram [98, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:11:08,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 04:11:08,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:11:08,667 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:11:08,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:08,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1171222412, now seen corresponding path program 8 times [2022-11-03 04:11:08,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:11:08,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013438594] [2022-11-03 04:11:08,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:08,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:11:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:17,957 INFO L134 CoverageAnalysis]: Checked inductivity of 5126 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-11-03 04:11:17,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:17,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013438594] [2022-11-03 04:11:17,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013438594] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:11:17,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073900265] [2022-11-03 04:11:17,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 04:11:17,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:11:17,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:11:17,959 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:11:17,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 04:11:27,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-03 04:11:27,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:11:27,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:11:27,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:27,700 INFO L134 CoverageAnalysis]: Checked inductivity of 5126 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5071 trivial. 0 not checked. [2022-11-03 04:11:27,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:11:28,356 INFO L134 CoverageAnalysis]: Checked inductivity of 5126 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5071 trivial. 0 not checked. [2022-11-03 04:11:28,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073900265] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:11:28,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [917258838] [2022-11-03 04:11:28,363 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-03 04:11:28,363 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:11:28,364 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:11:28,364 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:11:28,364 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:11:28,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:28,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:28,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:28,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:28,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:28,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:28,612 INFO L356 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2022-11-03 04:11:28,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 66 [2022-11-03 04:11:28,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:28,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:28,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:28,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:28,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:28,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:28,994 INFO L356 Elim1Store]: treesize reduction 528, result has 9.4 percent of original size [2022-11-03 04:11:28,994 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 32 case distinctions, treesize of input 127 treesize of output 157 [2022-11-03 04:11:29,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:29,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:29,078 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 16 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-11-03 04:11:29,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:29,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:29,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:29,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:29,293 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:29,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:29,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:29,299 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:29,351 INFO L356 Elim1Store]: treesize reduction 135, result has 12.9 percent of original size [2022-11-03 04:11:29,351 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 608 treesize of output 576 [2022-11-03 04:11:29,500 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:29,525 INFO L356 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-11-03 04:11:29,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2022-11-03 04:11:29,553 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:29,562 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:11:29,562 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:11:29,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:29,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:29,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:29,612 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:11:29,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:11:29,661 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:29,672 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:11:29,673 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:11:29,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:29,712 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:11:29,712 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:11:29,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:29,740 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:29,741 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:29,754 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:11:29,755 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:11:29,801 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:29,812 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:11:29,813 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:11:29,854 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:11:29,854 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:11:29,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:29,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:29,931 INFO L356 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-11-03 04:11:29,932 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 123 [2022-11-03 04:11:30,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:30,029 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:11:30,030 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:11:30,051 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:30,062 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:11:30,063 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:11:30,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:30,102 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:30,103 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:30,116 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:11:30,117 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:11:30,159 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:30,169 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:11:30,169 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:11:30,188 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:30,198 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:11:30,198 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:11:30,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:30,236 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:30,239 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:30,252 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:11:30,253 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:11:30,303 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:30,313 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:11:30,314 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:11:30,338 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:11:34,510 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6009#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_#t~mem15#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem16#1| |ULTIMATE.start_main_#t~mem15#1|) 1 0)) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_#t~mem16#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a6~0#1.base|) (+ |ULTIMATE.start_main_~#a6~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 04:11:34,510 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:11:34,510 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:11:34,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 13, 13] total 123 [2022-11-03 04:11:34,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984527195] [2022-11-03 04:11:34,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:11:34,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2022-11-03 04:11:34,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:34,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2022-11-03 04:11:34,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5345, Invalid=10911, Unknown=0, NotChecked=0, Total=16256 [2022-11-03 04:11:34,516 INFO L87 Difference]: Start difference. First operand 160 states and 166 transitions. Second operand has 123 states, 123 states have (on average 1.146341463414634) internal successors, (141), 123 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:11:35,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:35,192 INFO L93 Difference]: Finished difference Result 281 states and 353 transitions. [2022-11-03 04:11:35,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-11-03 04:11:35,193 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 1.146341463414634) internal successors, (141), 123 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2022-11-03 04:11:35,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:35,194 INFO L225 Difference]: With dead ends: 281 [2022-11-03 04:11:35,195 INFO L226 Difference]: Without dead ends: 221 [2022-11-03 04:11:35,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 413 SyntacticMatches, 33 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7058 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=5345, Invalid=10911, Unknown=0, NotChecked=0, Total=16256 [2022-11-03 04:11:35,199 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:35,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 04:11:35,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-03 04:11:35,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2022-11-03 04:11:35,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.0318181818181817) internal successors, (227), 220 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:11:35,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 227 transitions. [2022-11-03 04:11:35,215 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 227 transitions. Word has length 158 [2022-11-03 04:11:35,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:35,216 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 227 transitions. [2022-11-03 04:11:35,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 1.146341463414634) internal successors, (141), 123 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:11:35,217 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 227 transitions. [2022-11-03 04:11:35,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-03 04:11:35,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:35,221 INFO L195 NwaCegarLoop]: trace histogram [99, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:11:35,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-03 04:11:35,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 04:11:35,435 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:11:35,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:35,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1965795000, now seen corresponding path program 9 times [2022-11-03 04:11:35,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:11:35,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903102659] [2022-11-03 04:11:35,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:35,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:11:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:44,945 INFO L134 CoverageAnalysis]: Checked inductivity of 6215 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 1265 trivial. 0 not checked. [2022-11-03 04:11:44,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:44,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903102659] [2022-11-03 04:11:44,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903102659] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:11:44,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3003521] [2022-11-03 04:11:44,945 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 04:11:44,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:11:44,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:11:44,946 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:11:44,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 04:11:45,747 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 04:11:45,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:11:45,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 2598 conjuncts, 101 conjunts are in the unsatisfiable core [2022-11-03 04:11:45,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:45,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6215 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 1265 trivial. 0 not checked. [2022-11-03 04:11:45,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:11:57,775 INFO L134 CoverageAnalysis]: Checked inductivity of 6215 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 1265 trivial. 0 not checked. [2022-11-03 04:11:57,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3003521] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:11:57,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [995570518] [2022-11-03 04:11:57,777 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-03 04:11:57,777 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:11:57,778 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:11:57,778 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:11:57,778 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:11:57,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:57,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:57,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:57,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:57,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:57,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:58,191 INFO L356 Elim1Store]: treesize reduction 528, result has 9.4 percent of original size [2022-11-03 04:11:58,192 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 32 case distinctions, treesize of input 127 treesize of output 157 [2022-11-03 04:11:58,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:58,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:58,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:58,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:58,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:58,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:58,228 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 34 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 47 [2022-11-03 04:11:58,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:58,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:58,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 16 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-11-03 04:11:58,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:58,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:58,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:58,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:58,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:58,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:58,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:58,488 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:58,534 INFO L356 Elim1Store]: treesize reduction 135, result has 12.9 percent of original size [2022-11-03 04:11:58,535 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 608 treesize of output 576 [2022-11-03 04:11:58,677 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:58,690 INFO L356 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-11-03 04:11:58,690 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2022-11-03 04:11:58,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:58,727 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:11:58,728 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:11:58,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:58,758 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:58,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:58,772 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:11:58,772 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:11:58,807 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:58,818 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:11:58,818 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:11:58,855 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:58,865 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:11:58,865 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:11:58,889 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:58,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:58,903 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:11:58,903 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:11:58,948 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:58,959 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:11:58,960 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:11:58,996 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:11:58,996 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:11:59,031 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:59,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:59,095 INFO L356 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-11-03 04:11:59,095 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 123 [2022-11-03 04:11:59,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:59,182 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:11:59,183 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:11:59,205 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:11:59,205 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:11:59,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:59,235 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:59,278 INFO L356 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-11-03 04:11:59,278 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 123 [2022-11-03 04:11:59,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:59,356 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:11:59,356 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:11:59,370 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:59,380 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:11:59,380 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:11:59,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:11:59,412 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:59,413 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:59,429 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:11:59,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:11:59,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:11:59,473 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:11:59,473 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:11:59,489 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:12:06,048 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8515#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_#t~mem15#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem16#1| |ULTIMATE.start_main_#t~mem15#1|) 1 0)) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_#t~mem16#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a6~0#1.base|) (+ |ULTIMATE.start_main_~#a6~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 04:12:06,048 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:12:06,049 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:12:06,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101, 101] total 202 [2022-11-03 04:12:06,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718682377] [2022-11-03 04:12:06,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:12:06,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2022-11-03 04:12:06,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:12:06,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2022-11-03 04:12:06,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20523, Invalid=22533, Unknown=0, NotChecked=0, Total=43056 [2022-11-03 04:12:06,060 INFO L87 Difference]: Start difference. First operand 221 states and 227 transitions. Second operand has 203 states, 203 states have (on average 1.0689655172413792) internal successors, (217), 202 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:12:06,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:12:06,816 INFO L93 Difference]: Finished difference Result 442 states and 554 transitions. [2022-11-03 04:12:06,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2022-11-03 04:12:06,817 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 203 states have (on average 1.0689655172413792) internal successors, (217), 202 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 219 [2022-11-03 04:12:06,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:12:06,819 INFO L225 Difference]: With dead ends: 442 [2022-11-03 04:12:06,819 INFO L226 Difference]: Without dead ends: 322 [2022-11-03 04:12:06,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 481 SyntacticMatches, 69 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22596 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=20523, Invalid=22533, Unknown=0, NotChecked=0, Total=43056 [2022-11-03 04:12:06,824 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:12:06,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:12:06,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-11-03 04:12:06,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2022-11-03 04:12:06,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 1.0218068535825544) internal successors, (328), 321 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:12:06,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 328 transitions. [2022-11-03 04:12:06,839 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 328 transitions. Word has length 219 [2022-11-03 04:12:06,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:12:06,840 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 328 transitions. [2022-11-03 04:12:06,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 1.0689655172413792) internal successors, (217), 202 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:12:06,841 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 328 transitions. [2022-11-03 04:12:06,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-03 04:12:06,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:12:06,846 INFO L195 NwaCegarLoop]: trace histogram [200, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:12:06,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-03 04:12:07,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:12:07,059 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:12:07,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:12:07,059 INFO L85 PathProgramCache]: Analyzing trace with hash 649549196, now seen corresponding path program 10 times [2022-11-03 04:12:07,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:12:07,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122164258] [2022-11-03 04:12:07,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:12:07,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:12:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:12:38,750 INFO L134 CoverageAnalysis]: Checked inductivity of 21365 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 1265 trivial. 0 not checked. [2022-11-03 04:12:38,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:12:38,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122164258] [2022-11-03 04:12:38,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122164258] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:12:38,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680620346] [2022-11-03 04:12:38,751 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 04:12:38,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:12:38,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:12:38,752 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:12:38,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-03 04:12:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:12:40,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 4315 conjuncts, 202 conjunts are in the unsatisfiable core [2022-11-03 04:12:40,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:12:40,412 INFO L134 CoverageAnalysis]: Checked inductivity of 21365 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 1265 trivial. 0 not checked. [2022-11-03 04:12:40,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:13:27,266 INFO L134 CoverageAnalysis]: Checked inductivity of 21365 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 1265 trivial. 0 not checked. [2022-11-03 04:13:27,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680620346] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:13:27,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [418588402] [2022-11-03 04:13:27,268 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-03 04:13:27,268 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:13:27,269 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:13:27,269 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:13:27,269 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:13:27,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:13:27,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:13:27,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:13:27,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:13:27,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:13:27,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:13:27,499 INFO L356 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2022-11-03 04:13:27,499 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 66 [2022-11-03 04:13:27,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:13:27,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:13:27,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:13:27,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:13:27,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:13:27,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:13:27,812 INFO L356 Elim1Store]: treesize reduction 528, result has 9.4 percent of original size [2022-11-03 04:13:27,812 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 32 case distinctions, treesize of input 127 treesize of output 157 [2022-11-03 04:13:27,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:13:27,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:13:27,867 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 16 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-11-03 04:13:27,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:13:27,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:13:28,000 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:13:28,001 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:13:28,001 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:13:28,081 INFO L356 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-11-03 04:13:28,081 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 588 treesize of output 578 [2022-11-03 04:13:28,691 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:13:28,702 INFO L356 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-11-03 04:13:28,702 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2022-11-03 04:13:28,738 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:13:28,739 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:13:28,764 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:13:28,764 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:13:28,842 INFO L356 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-11-03 04:13:28,842 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 123 [2022-11-03 04:13:28,915 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:13:28,924 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:13:28,925 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:13:28,948 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:13:28,948 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:13:28,983 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:13:28,984 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:13:29,029 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 04:13:29,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 113 [2022-11-03 04:13:29,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:13:29,094 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:13:29,095 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:13:29,122 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:13:29,122 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:13:29,154 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:13:29,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:13:29,223 INFO L356 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-11-03 04:13:29,223 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 123 [2022-11-03 04:13:29,279 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:13:29,289 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:13:29,289 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:13:29,305 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:13:29,314 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:13:29,314 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:13:29,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:13:29,349 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:13:29,349 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:13:29,363 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:13:29,364 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:13:29,394 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:13:29,404 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:13:29,404 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:13:29,419 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:13:29,429 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:13:29,429 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:13:29,454 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:13:29,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:13:29,468 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:13:29,468 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:13:29,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:13:29,512 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:13:29,512 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:13:29,527 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:13:30,583 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12353#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_#t~mem15#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem16#1| |ULTIMATE.start_main_#t~mem15#1|) 1 0)) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_#t~mem16#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a6~0#1.base|) (+ |ULTIMATE.start_main_~#a6~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 04:13:30,583 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:13:30,583 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:13:30,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [202, 202, 202] total 404 [2022-11-03 04:13:30,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653884381] [2022-11-03 04:13:30,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:13:30,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 405 states [2022-11-03 04:13:30,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:13:30,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 405 interpolants. [2022-11-03 04:13:30,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81830, Invalid=85860, Unknown=0, NotChecked=0, Total=167690 [2022-11-03 04:13:30,601 INFO L87 Difference]: Start difference. First operand 322 states and 328 transitions. Second operand has 405 states, 405 states have (on average 1.0345679012345679) internal successors, (419), 404 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:13:33,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:33,126 INFO L93 Difference]: Finished difference Result 644 states and 857 transitions. [2022-11-03 04:13:33,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 404 states. [2022-11-03 04:13:33,127 INFO L78 Accepts]: Start accepts. Automaton has has 405 states, 405 states have (on average 1.0345679012345679) internal successors, (419), 404 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-03 04:13:33,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:33,130 INFO L225 Difference]: With dead ends: 644 [2022-11-03 04:13:33,130 INFO L226 Difference]: Without dead ends: 524 [2022-11-03 04:13:33,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1160 GetRequests, 752 SyntacticMatches, 0 SemanticMatches, 408 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3815 ImplicationChecksByTransitivity, 63.1s TimeCoverageRelationStatistics Valid=81830, Invalid=85860, Unknown=0, NotChecked=0, Total=167690 [2022-11-03 04:13:33,138 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:13:33,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 04:13:33,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-11-03 04:13:33,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2022-11-03 04:13:33,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 1.0133843212237095) internal successors, (530), 523 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:13:33,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 530 transitions. [2022-11-03 04:13:33,158 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 530 transitions. Word has length 320 [2022-11-03 04:13:33,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:33,158 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 530 transitions. [2022-11-03 04:13:33,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 405 states, 405 states have (on average 1.0345679012345679) internal successors, (419), 404 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:13:33,159 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 530 transitions. [2022-11-03 04:13:33,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2022-11-03 04:13:33,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:33,171 INFO L195 NwaCegarLoop]: trace histogram [402, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:13:33,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-03 04:13:33,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-03 04:13:33,399 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:33,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:33,399 INFO L85 PathProgramCache]: Analyzing trace with hash 489073420, now seen corresponding path program 11 times [2022-11-03 04:13:33,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:13:33,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142159843] [2022-11-03 04:13:33,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:33,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:13:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:15:32,339 INFO L134 CoverageAnalysis]: Checked inductivity of 82268 backedges. 0 proven. 81003 refuted. 0 times theorem prover too weak. 1265 trivial. 0 not checked. [2022-11-03 04:15:32,339 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:15:32,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142159843] [2022-11-03 04:15:32,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142159843] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:15:32,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439983790] [2022-11-03 04:15:32,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 04:15:32,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:15:32,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:15:32,348 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:15:32,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dc35625-dcb5-497c-9ea9-f2f731928cec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-03 04:24:06,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-11-03 04:24:06,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:24:07,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 1289 conjuncts, 83 conjunts are in the unsatisfiable core [2022-11-03 04:24:07,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:24:12,589 INFO L134 CoverageAnalysis]: Checked inductivity of 82268 backedges. 441 proven. 353 refuted. 0 times theorem prover too weak. 81474 trivial. 0 not checked. [2022-11-03 04:24:12,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:24:17,065 INFO L134 CoverageAnalysis]: Checked inductivity of 82268 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 82015 trivial. 0 not checked. [2022-11-03 04:24:17,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439983790] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:24:17,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1528956203] [2022-11-03 04:24:17,067 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-03 04:24:17,067 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:24:17,068 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:24:17,068 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:24:17,068 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:24:17,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:24:17,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:24:17,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:24:17,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:24:17,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:24:17,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:24:17,267 INFO L356 Elim1Store]: treesize reduction 365, result has 12.0 percent of original size [2022-11-03 04:24:17,267 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 66 [2022-11-03 04:24:17,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:24:17,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:24:17,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:24:17,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:24:17,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:24:17,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:24:17,532 INFO L356 Elim1Store]: treesize reduction 528, result has 9.4 percent of original size [2022-11-03 04:24:17,533 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 32 case distinctions, treesize of input 127 treesize of output 157 [2022-11-03 04:24:17,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:24:17,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:24:17,592 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 16 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-11-03 04:24:17,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:24:17,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:24:17,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:24:17,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:24:17,792 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:24:17,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:24:17,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:24:17,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:24:17,840 INFO L356 Elim1Store]: treesize reduction 135, result has 12.9 percent of original size [2022-11-03 04:24:17,840 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 608 treesize of output 576 [2022-11-03 04:24:17,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:24:17,990 INFO L356 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-11-03 04:24:17,991 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2022-11-03 04:24:18,019 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:24:18,027 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:24:18,028 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:24:18,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:24:18,053 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:24:18,054 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:24:18,066 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:24:18,066 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:24:18,105 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:24:18,117 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:24:18,117 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:24:18,153 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:24:18,163 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:24:18,163 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:24:18,194 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:24:18,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:24:18,207 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:24:18,208 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:24:18,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:24:18,257 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:24:18,258 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:24:18,292 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:24:18,301 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:24:18,301 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:24:18,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:24:18,335 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:24:18,336 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:24:18,348 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:24:18,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 109 [2022-11-03 04:24:18,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:24:18,391 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:24:18,391 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:24:18,416 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:24:18,416 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:24:18,442 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:24:18,446 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:24:18,487 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 04:24:18,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 113 [2022-11-03 04:24:18,529 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:24:18,538 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:24:18,539 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:24:18,560 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:24:18,560 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:24:18,587 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:24:18,587 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:24:18,640 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 04:24:18,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 113 [2022-11-03 04:24:18,691 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:24:18,700 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:24:18,701 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 04:24:18,713 INFO L180 IcfgInterpreter]: Interpretation finished