./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/simple-ext_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e7fbc69 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_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/simple-ext_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cf7f5d5a0c627430d9132d0f1be3b1c0ad58f22e7924c03137596c145de85b8c --- 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-4e7fbc6 [2022-11-23 13:48:08,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:48:08,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:48:08,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:48:08,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:48:08,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:48:08,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:48:08,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:48:08,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:48:08,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:48:08,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:48:08,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:48:08,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:48:08,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:48:08,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:48:08,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:48:08,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:48:08,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:48:08,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:48:08,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:48:08,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:48:08,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:48:08,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:48:08,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:48:08,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:48:08,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:48:08,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:48:08,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:48:08,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:48:08,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:48:08,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:48:08,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:48:08,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:48:08,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:48:08,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:48:08,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:48:08,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:48:08,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:48:08,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:48:08,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:48:08,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:48:08,959 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-23 13:48:08,997 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:48:08,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:48:08,998 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:48:08,999 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:48:08,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:48:09,000 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:48:09,001 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:48:09,001 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:48:09,001 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:48:09,001 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:48:09,002 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:48:09,003 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:48:09,003 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:48:09,003 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:48:09,003 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:48:09,004 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:48:09,004 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:48:09,004 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:48:09,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 13:48:09,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 13:48:09,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:48:09,006 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 13:48:09,006 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 13:48:09,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:48:09,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 13:48:09,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:48:09,007 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 13:48:09,007 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 13:48:09,007 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 13:48:09,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:48:09,008 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 13:48:09,008 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 13:48:09,009 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:48:09,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:48:09,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:48:09,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:48:09,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:48:09,010 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:48:09,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:48:09,010 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:48:09,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:48:09,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:48:09,011 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_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf7f5d5a0c627430d9132d0f1be3b1c0ad58f22e7924c03137596c145de85b8c [2022-11-23 13:48:09,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:48:09,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:48:09,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:48:09,304 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:48:09,304 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:48:09,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/list-ext-properties/simple-ext_1.i [2022-11-23 13:48:12,434 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:48:12,742 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:48:12,742 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/sv-benchmarks/c/list-ext-properties/simple-ext_1.i [2022-11-23 13:48:12,769 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/data/479855360/f463ca300bc94540a99615f2363f85e9/FLAGeb348761e [2022-11-23 13:48:12,785 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/data/479855360/f463ca300bc94540a99615f2363f85e9 [2022-11-23 13:48:12,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:48:12,790 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:48:12,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:48:12,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:48:12,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:48:12,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:48:12" (1/1) ... [2022-11-23 13:48:12,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4320d867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:12, skipping insertion in model container [2022-11-23 13:48:12,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:48:12" (1/1) ... [2022-11-23 13:48:12,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:48:12,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:48:13,136 WARN L237 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_09b556c5-5035-4837-878d-0e1d76a7b3c0/sv-benchmarks/c/list-ext-properties/simple-ext_1.i[23274,23287] [2022-11-23 13:48:13,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:48:13,160 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:48:13,202 WARN L237 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_09b556c5-5035-4837-878d-0e1d76a7b3c0/sv-benchmarks/c/list-ext-properties/simple-ext_1.i[23274,23287] [2022-11-23 13:48:13,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:48:13,231 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:48:13,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:13 WrapperNode [2022-11-23 13:48:13,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:48:13,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:48:13,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:48:13,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:48:13,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:13" (1/1) ... [2022-11-23 13:48:13,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:13" (1/1) ... [2022-11-23 13:48:13,274 INFO L138 Inliner]: procedures = 124, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 78 [2022-11-23 13:48:13,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:48:13,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:48:13,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:48:13,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:48:13,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:13" (1/1) ... [2022-11-23 13:48:13,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:13" (1/1) ... [2022-11-23 13:48:13,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:13" (1/1) ... [2022-11-23 13:48:13,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:13" (1/1) ... [2022-11-23 13:48:13,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:13" (1/1) ... [2022-11-23 13:48:13,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:13" (1/1) ... [2022-11-23 13:48:13,300 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:13" (1/1) ... [2022-11-23 13:48:13,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:13" (1/1) ... [2022-11-23 13:48:13,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:48:13,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:48:13,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:48:13,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:48:13,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:13" (1/1) ... [2022-11-23 13:48:13,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:48:13,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:48:13,348 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:48:13,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:48:13,390 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-11-23 13:48:13,390 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-11-23 13:48:13,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 13:48:13,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 13:48:13,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 13:48:13,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:48:13,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 13:48:13,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 13:48:13,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 13:48:13,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:48:13,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:48:13,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:48:13,500 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:48:13,501 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:48:13,533 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-11-23 13:48:13,819 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:48:13,905 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:48:13,914 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-23 13:48:13,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:48:13 BoogieIcfgContainer [2022-11-23 13:48:13,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:48:13,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:48:13,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:48:13,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:48:13,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:48:12" (1/3) ... [2022-11-23 13:48:13,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425178b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:48:13, skipping insertion in model container [2022-11-23 13:48:13,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:13" (2/3) ... [2022-11-23 13:48:13,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425178b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:48:13, skipping insertion in model container [2022-11-23 13:48:13,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:48:13" (3/3) ... [2022-11-23 13:48:13,945 INFO L112 eAbstractionObserver]: Analyzing ICFG simple-ext_1.i [2022-11-23 13:48:13,978 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:48:13,978 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2022-11-23 13:48:14,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:48:14,031 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@45288014, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:48:14,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-23 13:48:14,037 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 46 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:48:14,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 13:48:14,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:48:14,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 13:48:14,044 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-23 13:48:14,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:48:14,048 INFO L85 PathProgramCache]: Analyzing trace with hash 144472609, now seen corresponding path program 1 times [2022-11-23 13:48:14,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:48:14,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414597543] [2022-11-23 13:48:14,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:48:14,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:48:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:48:14,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:48:14,191 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:48:14,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414597543] [2022-11-23 13:48:14,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414597543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:48:14,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:48:14,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:48:14,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000937874] [2022-11-23 13:48:14,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:48:14,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 13:48:14,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:48:14,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 13:48:14,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 13:48:14,235 INFO L87 Difference]: Start difference. First operand has 48 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 46 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-23 13:48:14,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:48:14,306 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2022-11-23 13:48:14,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 13:48:14,308 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-11-23 13:48:14,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:48:14,314 INFO L225 Difference]: With dead ends: 48 [2022-11-23 13:48:14,322 INFO L226 Difference]: Without dead ends: 43 [2022-11-23 13:48:14,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 13:48:14,327 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:48:14,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 13:48:14,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-23 13:48:14,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-23 13:48:14,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 42 states have internal predecessors, (45), 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) [2022-11-23 13:48:14,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2022-11-23 13:48:14,365 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 5 [2022-11-23 13:48:14,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:48:14,366 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2022-11-23 13:48:14,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-23 13:48:14,367 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2022-11-23 13:48:14,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 13:48:14,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:48:14,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 13:48:14,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:48:14,369 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-23 13:48:14,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:48:14,369 INFO L85 PathProgramCache]: Analyzing trace with hash 183758781, now seen corresponding path program 1 times [2022-11-23 13:48:14,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:48:14,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979511054] [2022-11-23 13:48:14,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:48:14,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:48:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:48:14,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:48:14,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:48:14,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979511054] [2022-11-23 13:48:14,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979511054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:48:14,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:48:14,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:48:14,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015282284] [2022-11-23 13:48:14,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:48:14,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:48:14,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:48:14,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:48:14,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:48:14,517 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-23 13:48:14,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:48:14,655 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2022-11-23 13:48:14,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 13:48:14,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-11-23 13:48:14,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:48:14,661 INFO L225 Difference]: With dead ends: 57 [2022-11-23 13:48:14,661 INFO L226 Difference]: Without dead ends: 57 [2022-11-23 13:48:14,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:48:14,664 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 74 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:48:14,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 15 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:48:14,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-23 13:48:14,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2022-11-23 13:48:14,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 45 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) [2022-11-23 13:48:14,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2022-11-23 13:48:14,673 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 6 [2022-11-23 13:48:14,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:48:14,673 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2022-11-23 13:48:14,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-23 13:48:14,674 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2022-11-23 13:48:14,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 13:48:14,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:48:14,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 13:48:14,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 13:48:14,677 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-23 13:48:14,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:48:14,678 INFO L85 PathProgramCache]: Analyzing trace with hash 183758782, now seen corresponding path program 1 times [2022-11-23 13:48:14,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:48:14,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052093045] [2022-11-23 13:48:14,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:48:14,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:48:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:48:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:48:14,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:48:14,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052093045] [2022-11-23 13:48:14,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052093045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:48:14,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:48:14,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:48:14,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134916420] [2022-11-23 13:48:14,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:48:14,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:48:14,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:48:14,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:48:14,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:48:14,883 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-23 13:48:15,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:48:15,056 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2022-11-23 13:48:15,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 13:48:15,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-11-23 13:48:15,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:48:15,061 INFO L225 Difference]: With dead ends: 85 [2022-11-23 13:48:15,061 INFO L226 Difference]: Without dead ends: 85 [2022-11-23 13:48:15,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:48:15,068 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 60 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:48:15,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 41 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:48:15,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-23 13:48:15,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 60. [2022-11-23 13:48:15,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 59 states have internal predecessors, (75), 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) [2022-11-23 13:48:15,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2022-11-23 13:48:15,080 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 6 [2022-11-23 13:48:15,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:48:15,081 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2022-11-23 13:48:15,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-23 13:48:15,081 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2022-11-23 13:48:15,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 13:48:15,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:48:15,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:48:15,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 13:48:15,082 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-23 13:48:15,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:48:15,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1946737033, now seen corresponding path program 1 times [2022-11-23 13:48:15,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:48:15,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543543259] [2022-11-23 13:48:15,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:48:15,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:48:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:48:15,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:48:15,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:48:15,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543543259] [2022-11-23 13:48:15,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543543259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:48:15,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:48:15,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:48:15,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932233419] [2022-11-23 13:48:15,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:48:15,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:48:15,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:48:15,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:48:15,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:48:15,170 INFO L87 Difference]: Start difference. First operand 60 states and 75 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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) [2022-11-23 13:48:15,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:48:15,255 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2022-11-23 13:48:15,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 13:48:15,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 [2022-11-23 13:48:15,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:48:15,257 INFO L225 Difference]: With dead ends: 72 [2022-11-23 13:48:15,257 INFO L226 Difference]: Without dead ends: 72 [2022-11-23 13:48:15,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:48:15,258 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 74 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:48:15,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 30 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:48:15,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-23 13:48:15,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 60. [2022-11-23 13:48:15,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 44 states have (on average 1.6136363636363635) internal successors, (71), 59 states have internal predecessors, (71), 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) [2022-11-23 13:48:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2022-11-23 13:48:15,264 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 10 [2022-11-23 13:48:15,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:48:15,265 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2022-11-23 13:48:15,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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) [2022-11-23 13:48:15,265 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2022-11-23 13:48:15,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 13:48:15,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:48:15,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:48:15,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 13:48:15,267 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-23 13:48:15,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:48:15,267 INFO L85 PathProgramCache]: Analyzing trace with hash -221270335, now seen corresponding path program 1 times [2022-11-23 13:48:15,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:48:15,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922823974] [2022-11-23 13:48:15,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:48:15,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:48:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:48:15,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:48:15,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:48:15,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922823974] [2022-11-23 13:48:15,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922823974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:48:15,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:48:15,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 13:48:15,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352223114] [2022-11-23 13:48:15,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:48:15,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 13:48:15,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:48:15,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 13:48:15,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 13:48:15,753 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 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) [2022-11-23 13:48:16,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:48:16,037 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2022-11-23 13:48:16,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 13:48:16,037 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 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 [2022-11-23 13:48:16,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:48:16,038 INFO L225 Difference]: With dead ends: 66 [2022-11-23 13:48:16,038 INFO L226 Difference]: Without dead ends: 66 [2022-11-23 13:48:16,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-23 13:48:16,039 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 66 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:48:16,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 68 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:48:16,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-23 13:48:16,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2022-11-23 13:48:16,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 59 states have internal predecessors, (70), 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) [2022-11-23 13:48:16,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2022-11-23 13:48:16,044 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 11 [2022-11-23 13:48:16,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:48:16,044 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2022-11-23 13:48:16,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 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) [2022-11-23 13:48:16,045 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2022-11-23 13:48:16,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 13:48:16,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:48:16,045 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:48:16,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 13:48:16,046 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-23 13:48:16,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:48:16,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1198442593, now seen corresponding path program 1 times [2022-11-23 13:48:16,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:48:16,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428996582] [2022-11-23 13:48:16,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:48:16,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:48:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:48:16,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:48:16,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:48:16,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428996582] [2022-11-23 13:48:16,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428996582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:48:16,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:48:16,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 13:48:16,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580976163] [2022-11-23 13:48:16,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:48:16,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:48:16,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:48:16,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:48:16,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:48:16,192 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2022-11-23 13:48:16,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:48:16,330 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2022-11-23 13:48:16,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:48:16,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2022-11-23 13:48:16,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:48:16,331 INFO L225 Difference]: With dead ends: 64 [2022-11-23 13:48:16,331 INFO L226 Difference]: Without dead ends: 64 [2022-11-23 13:48:16,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 13:48:16,333 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 41 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:48:16,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 53 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:48:16,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-23 13:48:16,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2022-11-23 13:48:16,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 44 states have (on average 1.5454545454545454) internal successors, (68), 57 states have internal predecessors, (68), 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) [2022-11-23 13:48:16,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2022-11-23 13:48:16,337 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 12 [2022-11-23 13:48:16,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:48:16,338 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2022-11-23 13:48:16,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2022-11-23 13:48:16,338 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2022-11-23 13:48:16,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 13:48:16,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:48:16,339 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:48:16,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 13:48:16,340 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-23 13:48:16,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:48:16,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1198442592, now seen corresponding path program 1 times [2022-11-23 13:48:16,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:48:16,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264549015] [2022-11-23 13:48:16,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:48:16,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:48:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:48:16,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:48:16,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:48:16,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264549015] [2022-11-23 13:48:16,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264549015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:48:16,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:48:16,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 13:48:16,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165558848] [2022-11-23 13:48:16,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:48:16,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:48:16,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:48:16,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:48:16,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:48:16,558 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2022-11-23 13:48:16,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:48:16,725 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2022-11-23 13:48:16,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:48:16,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2022-11-23 13:48:16,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:48:16,728 INFO L225 Difference]: With dead ends: 59 [2022-11-23 13:48:16,728 INFO L226 Difference]: Without dead ends: 59 [2022-11-23 13:48:16,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 13:48:16,731 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 23 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:48:16,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 67 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:48:16,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-23 13:48:16,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49. [2022-11-23 13:48:16,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.475) internal successors, (59), 48 states have internal predecessors, (59), 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) [2022-11-23 13:48:16,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2022-11-23 13:48:16,743 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 12 [2022-11-23 13:48:16,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:48:16,743 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2022-11-23 13:48:16,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2022-11-23 13:48:16,744 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2022-11-23 13:48:16,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 13:48:16,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:48:16,745 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:48:16,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 13:48:16,746 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-23 13:48:16,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:48:16,746 INFO L85 PathProgramCache]: Analyzing trace with hash 2107766282, now seen corresponding path program 1 times [2022-11-23 13:48:16,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:48:16,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812010534] [2022-11-23 13:48:16,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:48:16,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:48:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:48:17,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:48:17,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:48:17,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812010534] [2022-11-23 13:48:17,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812010534] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:48:17,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363192844] [2022-11-23 13:48:17,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:48:17,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:48:17,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:48:17,034 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:48:17,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 13:48:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:48:17,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-23 13:48:17,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:48:17,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 13:48:17,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 13:48:17,619 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:48:17,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-23 13:48:17,628 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:48:17,641 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 13:48:17,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-11-23 13:48:17,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:48:17,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:48:17,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 41 [2022-11-23 13:48:17,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-23 13:48:17,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:48:17,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363192844] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:48:17,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1203076133] [2022-11-23 13:48:17,966 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-23 13:48:17,967 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:48:17,971 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:48:17,976 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:48:17,976 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:48:18,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:18,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:18,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 13:48:18,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 13:48:18,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 13:48:18,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:18,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 13:48:18,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 13:48:18,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:18,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:18,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:18,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 13:48:18,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 13:48:18,327 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:48:19,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1203076133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:48:19,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:48:19,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7, 7] total 20 [2022-11-23 13:48:19,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128874950] [2022-11-23 13:48:19,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:48:19,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 13:48:19,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:48:19,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 13:48:19,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-23 13:48:19,572 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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) [2022-11-23 13:48:19,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:48:19,795 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2022-11-23 13:48:19,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 13:48:19,796 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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 13 [2022-11-23 13:48:19,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:48:19,796 INFO L225 Difference]: With dead ends: 55 [2022-11-23 13:48:19,796 INFO L226 Difference]: Without dead ends: 55 [2022-11-23 13:48:19,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-23 13:48:19,797 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 22 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:48:19,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 31 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:48:19,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-23 13:48:19,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 46. [2022-11-23 13:48:19,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 45 states have internal predecessors, (52), 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) [2022-11-23 13:48:19,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2022-11-23 13:48:19,800 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 13 [2022-11-23 13:48:19,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:48:19,800 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2022-11-23 13:48:19,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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) [2022-11-23 13:48:19,801 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2022-11-23 13:48:19,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 13:48:19,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:48:19,801 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:48:19,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 13:48:20,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:48:20,008 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-23 13:48:20,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:48:20,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1659230224, now seen corresponding path program 1 times [2022-11-23 13:48:20,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:48:20,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261636467] [2022-11-23 13:48:20,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:48:20,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:48:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:48:20,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 13:48:20,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:48:20,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261636467] [2022-11-23 13:48:20,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261636467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:48:20,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:48:20,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:48:20,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798176301] [2022-11-23 13:48:20,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:48:20,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:48:20,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:48:20,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:48:20,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:48:20,085 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2022-11-23 13:48:20,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:48:20,146 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2022-11-23 13:48:20,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 13:48:20,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2022-11-23 13:48:20,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:48:20,147 INFO L225 Difference]: With dead ends: 61 [2022-11-23 13:48:20,147 INFO L226 Difference]: Without dead ends: 61 [2022-11-23 13:48:20,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:48:20,150 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 53 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:48:20,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 22 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:48:20,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-23 13:48:20,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 47. [2022-11-23 13:48:20,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.394736842105263) internal successors, (53), 46 states have internal predecessors, (53), 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) [2022-11-23 13:48:20,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2022-11-23 13:48:20,156 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 15 [2022-11-23 13:48:20,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:48:20,157 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2022-11-23 13:48:20,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2022-11-23 13:48:20,157 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2022-11-23 13:48:20,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 13:48:20,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:48:20,158 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:48:20,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 13:48:20,158 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-23 13:48:20,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:48:20,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1259933215, now seen corresponding path program 1 times [2022-11-23 13:48:20,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:48:20,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849454310] [2022-11-23 13:48:20,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:48:20,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:48:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:48:20,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:48:20,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:48:20,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849454310] [2022-11-23 13:48:20,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849454310] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:48:20,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510059005] [2022-11-23 13:48:20,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:48:20,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:48:20,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:48:20,327 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:48:20,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 13:48:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:48:20,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 13:48:20,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:48:20,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:48:20,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:48:20,621 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 13:48:20,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 24 [2022-11-23 13:48:20,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:48:20,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510059005] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:48:20,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1190726111] [2022-11-23 13:48:20,731 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-23 13:48:20,732 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:48:20,732 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:48:20,732 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:48:20,732 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:48:20,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:20,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:20,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 13:48:20,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 13:48:20,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 13:48:20,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:20,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:20,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:20,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:20,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:20,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 13:48:20,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:20,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 13:48:20,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:20,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:20,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 13:48:20,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 13:48:20,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 13:48:21,033 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 13:48:21,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 16 [2022-11-23 13:48:21,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:21,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 78 [2022-11-23 13:48:21,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:21,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:21,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:21,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:21,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:21,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:21,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:21,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:21,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:21,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 48 [2022-11-23 13:48:21,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:21,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:21,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:21,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2022-11-23 13:48:21,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:21,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:21,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:21,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 43 [2022-11-23 13:48:21,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:21,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-23 13:48:21,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:21,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2022-11-23 13:48:21,567 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:48:21,656 INFO L321 Elim1Store]: treesize reduction 140, result has 24.3 percent of original size [2022-11-23 13:48:21,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 460 treesize of output 466 [2022-11-23 13:48:21,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:48:21,743 INFO L321 Elim1Store]: treesize reduction 70, result has 19.5 percent of original size [2022-11-23 13:48:21,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 477 treesize of output 377 [2022-11-23 13:48:21,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:21,914 INFO L321 Elim1Store]: treesize reduction 230, result has 12.2 percent of original size [2022-11-23 13:48:21,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 452 treesize of output 457 [2022-11-23 13:48:21,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:48:22,022 INFO L321 Elim1Store]: treesize reduction 94, result has 19.7 percent of original size [2022-11-23 13:48:22,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 454 treesize of output 423 [2022-11-23 13:48:22,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:48:22,522 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-23 13:48:22,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1274 treesize of output 843 [2022-11-23 13:48:22,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:22,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:22,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:22,579 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:48:22,593 INFO L321 Elim1Store]: treesize reduction 90, result has 1.1 percent of original size [2022-11-23 13:48:22,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 1107 treesize of output 1067 [2022-11-23 13:48:22,630 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:48:22,697 INFO L321 Elim1Store]: treesize reduction 72, result has 31.4 percent of original size [2022-11-23 13:48:22,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 1094 treesize of output 1046 [2022-11-23 13:48:23,070 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-23 13:48:23,071 INFO L350 Elim1Store]: Elim1 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 23 [2022-11-23 13:48:23,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:23,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:23,088 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 13:48:23,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-11-23 13:48:23,124 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-23 13:48:23,124 INFO L350 Elim1Store]: Elim1 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 23 [2022-11-23 13:48:23,162 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:23,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:23,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 13:48:23,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-23 13:48:23,264 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-23 13:48:23,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 63 [2022-11-23 13:48:23,314 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-23 13:48:23,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 57 [2022-11-23 13:48:23,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 13:48:23,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 13:48:23,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 13:48:23,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 13:48:23,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 13:48:23,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-23 13:48:23,591 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-23 13:48:23,592 INFO L350 Elim1Store]: Elim1 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 153 treesize of output 151 [2022-11-23 13:48:23,640 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-23 13:48:23,641 INFO L350 Elim1Store]: Elim1 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 147 treesize of output 145 [2022-11-23 13:48:23,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:23,765 INFO L321 Elim1Store]: treesize reduction 96, result has 35.6 percent of original size [2022-11-23 13:48:23,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 139 treesize of output 185 [2022-11-23 13:48:23,838 INFO L321 Elim1Store]: treesize reduction 32, result has 49.2 percent of original size [2022-11-23 13:48:23,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 129 treesize of output 147 [2022-11-23 13:48:25,515 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:25,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:25,570 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:25,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 127 treesize of output 136 [2022-11-23 13:48:25,669 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:25,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:25,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:25,746 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-23 13:48:25,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 29 [2022-11-23 13:48:25,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:25,800 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-23 13:48:25,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 29 [2022-11-23 13:48:25,875 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:25,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:25,903 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:25,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 15 [2022-11-23 13:48:25,923 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-23 13:48:25,956 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-23 13:48:25,972 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-23 13:48:26,051 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:26,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 15 [2022-11-23 13:48:26,128 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:26,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:26,164 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:26,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 15 [2022-11-23 13:48:26,222 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:26,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:26,307 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-23 13:48:26,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 29 [2022-11-23 13:48:26,386 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:26,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:26,460 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:26,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:27,256 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:48:28,453 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1342#(and (exists ((|v_ULTIMATE.start_main_~p~0#1.offset_70| Int) (|v_ULTIMATE.start_main_~p~0#1.base_79| Int)) (and (= (select |#valid| |v_ULTIMATE.start_main_~p~0#1.base_79|) 1) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~p~0#1.base_79|) (+ |v_ULTIMATE.start_main_~p~0#1.offset_70| 4)) 0) (<= (+ |v_ULTIMATE.start_main_~p~0#1.offset_70| 8) (select |#length| |v_ULTIMATE.start_main_~p~0#1.base_79|)) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~p~0#1.base_79|) (+ |v_ULTIMATE.start_main_~p~0#1.offset_70| 4)) 0) (<= 0 (select (select |#memory_int| |v_ULTIMATE.start_main_~p~0#1.base_79|) |v_ULTIMATE.start_main_~p~0#1.offset_70|)) (<= 0 |v_ULTIMATE.start_main_~p~0#1.offset_70|))) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~a~0#1.offset| |ULTIMATE.start_main_~p~0#1.offset|) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~a~0#1.base| |ULTIMATE.start_main_~p~0#1.base|) (not (<= (+ |ULTIMATE.start_main_~p~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~p~0#1.base|))) (<= 0 |#StackHeapBarrier|) (not (= 0 |ULTIMATE.start_main_~p~0#1.base|)) (= |#NULL.base| 0))' at error location [2022-11-23 13:48:28,454 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 13:48:28,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:48:28,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-11-23 13:48:28,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662257678] [2022-11-23 13:48:28,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 13:48:28,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 13:48:28,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:48:28,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 13:48:28,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=647, Unknown=0, NotChecked=0, Total=812 [2022-11-23 13:48:28,456 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 17 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 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) [2022-11-23 13:48:28,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:48:28,673 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2022-11-23 13:48:28,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:48:28,674 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 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 15 [2022-11-23 13:48:28,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:48:28,675 INFO L225 Difference]: With dead ends: 61 [2022-11-23 13:48:28,675 INFO L226 Difference]: Without dead ends: 61 [2022-11-23 13:48:28,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=204, Invalid=788, Unknown=0, NotChecked=0, Total=992 [2022-11-23 13:48:28,676 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 114 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:48:28,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 63 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:48:28,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-23 13:48:28,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 47. [2022-11-23 13:48:28,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.368421052631579) internal successors, (52), 46 states have internal predecessors, (52), 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) [2022-11-23 13:48:28,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2022-11-23 13:48:28,678 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 15 [2022-11-23 13:48:28,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:48:28,679 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2022-11-23 13:48:28,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 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) [2022-11-23 13:48:28,679 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2022-11-23 13:48:28,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 13:48:28,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:48:28,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:48:28,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 13:48:28,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 13:48:28,895 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-23 13:48:28,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:48:28,895 INFO L85 PathProgramCache]: Analyzing trace with hash 103470743, now seen corresponding path program 1 times [2022-11-23 13:48:28,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:48:28,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343423594] [2022-11-23 13:48:28,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:48:28,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:48:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:48:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 13:48:28,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:48:28,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343423594] [2022-11-23 13:48:28,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343423594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:48:28,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:48:28,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:48:28,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079713446] [2022-11-23 13:48:28,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:48:28,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:48:28,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:48:28,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:48:28,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:48:28,948 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:48:29,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:48:29,004 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2022-11-23 13:48:29,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 13:48:29,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-23 13:48:29,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:48:29,006 INFO L225 Difference]: With dead ends: 57 [2022-11-23 13:48:29,006 INFO L226 Difference]: Without dead ends: 57 [2022-11-23 13:48:29,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:48:29,007 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 46 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:48:29,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 23 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 13:48:29,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-23 13:48:29,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2022-11-23 13:48:29,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.358974358974359) internal successors, (53), 47 states have internal predecessors, (53), 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) [2022-11-23 13:48:29,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2022-11-23 13:48:29,012 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 16 [2022-11-23 13:48:29,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:48:29,012 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2022-11-23 13:48:29,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:48:29,012 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2022-11-23 13:48:29,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 13:48:29,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:48:29,014 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:48:29,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 13:48:29,015 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-23 13:48:29,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:48:29,016 INFO L85 PathProgramCache]: Analyzing trace with hash -384957409, now seen corresponding path program 1 times [2022-11-23 13:48:29,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:48:29,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928917066] [2022-11-23 13:48:29,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:48:29,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:48:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:48:29,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:48:29,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:48:29,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928917066] [2022-11-23 13:48:29,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928917066] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:48:29,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429405526] [2022-11-23 13:48:29,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:48:29,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:48:29,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:48:29,461 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:48:29,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 13:48:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:48:29,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-23 13:48:29,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:48:29,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 13:48:29,628 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-23 13:48:29,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-23 13:48:29,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 13:48:29,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:29,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-23 13:48:29,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-11-23 13:48:29,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-23 13:48:29,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-23 13:48:29,833 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:48:29,835 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 13:48:29,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2022-11-23 13:48:29,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:48:29,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:48:30,100 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 13:48:30,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 29 [2022-11-23 13:48:30,114 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 13:48:30,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 33 [2022-11-23 13:48:30,126 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-23 13:48:30,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-23 13:48:30,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-23 13:48:30,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:48:30,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429405526] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:48:30,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1984757277] [2022-11-23 13:48:30,264 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-23 13:48:30,264 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:48:30,265 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:48:30,265 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:48:30,265 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:48:30,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 13:48:30,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 13:48:30,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 13:48:30,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 13:48:30,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 13:48:30,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 13:48:30,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 13:48:30,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 13:48:30,483 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 13:48:30,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 16 [2022-11-23 13:48:30,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 78 [2022-11-23 13:48:30,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 54 [2022-11-23 13:48:30,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2022-11-23 13:48:30,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,576 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 13:48:30,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 43 [2022-11-23 13:48:30,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-23 13:48:30,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:30,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 87 [2022-11-23 13:48:30,911 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:48:30,953 INFO L321 Elim1Store]: treesize reduction 94, result has 19.7 percent of original size [2022-11-23 13:48:30,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 464 treesize of output 433 [2022-11-23 13:48:30,986 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:48:31,060 INFO L321 Elim1Store]: treesize reduction 140, result has 24.3 percent of original size [2022-11-23 13:48:31,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 460 treesize of output 466 [2022-11-23 13:48:31,083 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:48:31,129 INFO L321 Elim1Store]: treesize reduction 70, result has 19.5 percent of original size [2022-11-23 13:48:31,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 477 treesize of output 377 [2022-11-23 13:48:31,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:31,264 INFO L321 Elim1Store]: treesize reduction 230, result has 12.2 percent of original size [2022-11-23 13:48:31,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 452 treesize of output 457 [2022-11-23 13:48:31,513 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:48:31,584 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-23 13:48:31,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 661 treesize of output 446 [2022-11-23 13:48:31,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:31,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:31,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:31,614 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:48:31,627 INFO L321 Elim1Store]: treesize reduction 90, result has 1.1 percent of original size [2022-11-23 13:48:31,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 584 treesize of output 568 [2022-11-23 13:48:31,650 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:48:31,715 INFO L321 Elim1Store]: treesize reduction 72, result has 31.4 percent of original size [2022-11-23 13:48:31,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 571 treesize of output 561 [2022-11-23 13:48:31,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 13:48:32,018 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-23 13:48:32,018 INFO L350 Elim1Store]: Elim1 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 23 [2022-11-23 13:48:32,061 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:32,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:32,097 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-23 13:48:32,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2022-11-23 13:48:32,118 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 13:48:32,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-11-23 13:48:32,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-23 13:48:32,202 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-23 13:48:32,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 63 [2022-11-23 13:48:32,237 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-23 13:48:32,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 57 [2022-11-23 13:48:32,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 13:48:32,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 13:48:32,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 13:48:32,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 13:48:32,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-23 13:48:32,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 13:48:32,523 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-23 13:48:32,523 INFO L350 Elim1Store]: Elim1 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 153 treesize of output 151 [2022-11-23 13:48:32,568 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-23 13:48:32,568 INFO L350 Elim1Store]: Elim1 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 147 treesize of output 145 [2022-11-23 13:48:32,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:32,696 INFO L321 Elim1Store]: treesize reduction 96, result has 35.6 percent of original size [2022-11-23 13:48:32,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 139 treesize of output 185 [2022-11-23 13:48:32,762 INFO L321 Elim1Store]: treesize reduction 32, result has 49.2 percent of original size [2022-11-23 13:48:32,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 129 treesize of output 147 [2022-11-23 13:48:37,610 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:37,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:37,644 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 13:48:37,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 21 [2022-11-23 13:48:37,670 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 13:48:37,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 21 [2022-11-23 13:48:37,705 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:37,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-23 13:48:37,744 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:37,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 15 [2022-11-23 13:48:37,780 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:37,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 15 [2022-11-23 13:48:37,857 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:37,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:37,919 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 13:48:37,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 21 [2022-11-23 13:48:37,985 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:37,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:38,043 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 13:48:38,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 21 [2022-11-23 13:48:38,091 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 13:48:38,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 21 [2022-11-23 13:48:38,141 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:38,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:38,244 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:38,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:38,300 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:38,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-23 13:48:38,324 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:38,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-23 13:48:38,376 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:38,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:38,427 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:38,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-23 13:48:38,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:38,465 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-23 13:48:38,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 29 [2022-11-23 13:48:38,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:38,532 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-23 13:48:38,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 29 [2022-11-23 13:48:38,621 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:38,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:38,668 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:38,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-23 13:48:38,695 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:38,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-23 13:48:38,753 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:38,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-23 13:48:38,783 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:38,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 15 [2022-11-23 13:48:38,812 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:38,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 15 [2022-11-23 13:48:38,866 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:38,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-23 13:48:38,920 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:38,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:38,956 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:38,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 83 treesize of output 1 [2022-11-23 13:48:39,020 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:39,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:39,182 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:39,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 561 treesize of output 550 [2022-11-23 13:48:39,388 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:39,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:39,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:39,435 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-23 13:48:39,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 116 treesize of output 121 [2022-11-23 13:48:39,498 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:39,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-23 13:48:39,525 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:39,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-23 13:48:39,557 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-23 13:48:39,573 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-23 13:48:39,633 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:39,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:39,670 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:39,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-23 13:48:39,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:39,733 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-23 13:48:39,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 29 [2022-11-23 13:48:39,776 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-23 13:48:39,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:39,832 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-23 13:48:39,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 29 [2022-11-23 13:48:39,871 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:39,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-23 13:48:39,903 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:39,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 154 treesize of output 1 [2022-11-23 13:48:39,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:39,939 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-23 13:48:39,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 29 [2022-11-23 13:48:40,033 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:40,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:40,097 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-23 13:48:40,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 29 [2022-11-23 13:48:40,166 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-23 13:48:40,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 29 [2022-11-23 13:48:40,217 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:40,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-23 13:48:40,270 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:40,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-23 13:48:40,303 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:40,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-23 13:48:40,348 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:40,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-23 13:48:40,385 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:40,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-23 13:48:40,440 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-23 13:48:40,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 29 [2022-11-23 13:48:41,808 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:48:43,144 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1696#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) |ULTIMATE.start_main_~i~0#1|)) (= |ULTIMATE.start_main_~a~0#1.offset| |ULTIMATE.start_main_~p~0#1.offset|) (<= (+ |ULTIMATE.start_main_~p~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~p~0#1.base|)) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~a~0#1.base| |ULTIMATE.start_main_~p~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~p~0#1.base|) 1) (exists ((|v_ULTIMATE.start_main_~p~0#1.base_89| Int) (|v_ULTIMATE.start_main_~p~0#1.offset_78| Int)) (and (<= 0 |v_ULTIMATE.start_main_~p~0#1.offset_78|) (<= 0 (select (select |#memory_int| |v_ULTIMATE.start_main_~p~0#1.base_89|) |v_ULTIMATE.start_main_~p~0#1.offset_78|)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~p~0#1.base_89|) (+ |v_ULTIMATE.start_main_~p~0#1.offset_78| 4)) 0) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~p~0#1.base_89|) (+ |v_ULTIMATE.start_main_~p~0#1.offset_78| 4)) 0) (<= (+ |v_ULTIMATE.start_main_~p~0#1.offset_78| 8) (select |#length| |v_ULTIMATE.start_main_~p~0#1.base_89|)) (= 1 (select |#valid| |v_ULTIMATE.start_main_~p~0#1.base_89|)))) (<= 0 |#StackHeapBarrier|) (not (= 0 |ULTIMATE.start_main_~p~0#1.base|)) (= |#NULL.base| 0))' at error location [2022-11-23 13:48:43,144 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 13:48:43,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:48:43,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-11-23 13:48:43,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112055243] [2022-11-23 13:48:43,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 13:48:43,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-23 13:48:43,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:48:43,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-23 13:48:43,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=961, Unknown=3, NotChecked=0, Total=1122 [2022-11-23 13:48:43,146 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 states have internal predecessors, (46), 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) [2022-11-23 13:48:43,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:48:43,879 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2022-11-23 13:48:43,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 13:48:43,880 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 states have internal predecessors, (46), 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 17 [2022-11-23 13:48:43,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:48:43,881 INFO L225 Difference]: With dead ends: 93 [2022-11-23 13:48:43,881 INFO L226 Difference]: Without dead ends: 93 [2022-11-23 13:48:43,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=259, Invalid=1543, Unknown=4, NotChecked=0, Total=1806 [2022-11-23 13:48:43,882 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 147 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 27 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 13:48:43,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 144 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 351 Invalid, 4 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 13:48:43,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-23 13:48:43,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 59. [2022-11-23 13:48:43,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 50 states have (on average 1.3) internal successors, (65), 58 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) [2022-11-23 13:48:43,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2022-11-23 13:48:43,885 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 17 [2022-11-23 13:48:43,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:48:43,886 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2022-11-23 13:48:43,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 states have internal predecessors, (46), 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) [2022-11-23 13:48:43,886 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2022-11-23 13:48:43,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-23 13:48:43,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:48:43,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:48:43,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 13:48:44,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 13:48:44,093 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-23 13:48:44,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:48:44,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1289477116, now seen corresponding path program 1 times [2022-11-23 13:48:44,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:48:44,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103325185] [2022-11-23 13:48:44,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:48:44,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:48:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:48:44,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 13:48:44,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:48:44,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103325185] [2022-11-23 13:48:44,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103325185] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:48:44,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409365731] [2022-11-23 13:48:44,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:48:44,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:48:44,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:48:44,175 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:48:44,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 13:48:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:48:44,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 13:48:44,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:48:44,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 13:48:44,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 13:48:44,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:48:44,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 13:48:44,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409365731] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:48:44,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1255253356] [2022-11-23 13:48:44,366 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-23 13:48:44,366 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:48:44,366 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:48:44,366 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:48:44,366 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:48:44,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:44,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:44,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 13:48:44,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:44,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 13:48:44,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 13:48:44,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 13:48:44,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 13:48:44,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 13:48:44,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:44,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:44,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:44,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 13:48:44,633 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:48:46,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1255253356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:48:46,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:48:46,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [3, 3, 3] total 15 [2022-11-23 13:48:46,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105484646] [2022-11-23 13:48:46,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:48:46,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 13:48:46,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:48:46,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 13:48:46,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-23 13:48:46,675 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second 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) [2022-11-23 13:48:47,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:48:47,017 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2022-11-23 13:48:47,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 13:48:47,018 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 19 [2022-11-23 13:48:47,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:48:47,018 INFO L225 Difference]: With dead ends: 69 [2022-11-23 13:48:47,018 INFO L226 Difference]: Without dead ends: 52 [2022-11-23 13:48:47,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-23 13:48:47,019 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 22 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 13:48:47,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 31 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 13:48:47,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-23 13:48:47,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-23 13:48:47,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 43 states have (on average 1.302325581395349) internal successors, (56), 51 states have internal predecessors, (56), 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) [2022-11-23 13:48:47,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2022-11-23 13:48:47,022 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 19 [2022-11-23 13:48:47,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:48:47,022 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2022-11-23 13:48:47,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-11-23 13:48:47,023 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2022-11-23 13:48:47,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-23 13:48:47,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:48:47,023 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:48:47,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 13:48:47,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-23 13:48:47,227 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-23 13:48:47,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:48:47,227 INFO L85 PathProgramCache]: Analyzing trace with hash -576689176, now seen corresponding path program 1 times [2022-11-23 13:48:47,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:48:47,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730412511] [2022-11-23 13:48:47,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:48:47,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:48:47,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:48:47,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:48:47,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:48:47,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730412511] [2022-11-23 13:48:47,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730412511] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:48:47,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907528397] [2022-11-23 13:48:47,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:48:47,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:48:47,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:48:47,617 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:48:47,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 13:48:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:48:47,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-23 13:48:47,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:48:47,778 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 13:48:47,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-23 13:48:47,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 13:48:47,961 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 13:48:47,961 INFO L350 Elim1Store]: Elim1 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 37 treesize of output 35 [2022-11-23 13:48:47,995 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 13:48:47,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2022-11-23 13:48:48,125 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:48:48,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-11-23 13:48:48,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:48:48,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:48:48,368 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 13:48:48,368 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-23 13:48:48,376 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 13:48:48,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-23 13:48:48,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-23 13:48:48,404 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 13:48:48,404 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-11-23 13:48:48,415 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 13:48:48,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 39 [2022-11-23 13:48:48,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 13:48:48,687 INFO L321 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2022-11-23 13:48:48,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 95 [2022-11-23 13:48:48,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:48:48,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907528397] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:48:48,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1362728809] [2022-11-23 13:48:48,861 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-23 13:48:48,861 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:48:48,861 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:48:48,861 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:48:48,861 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:48:48,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:48,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:48,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 13:48:48,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:48,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 13:48:48,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 13:48:48,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:48,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:48,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:48,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:48,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:48,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 13:48:48,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 13:48:48,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 13:48:48,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:48,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:49,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 13:48:49,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 13:48:49,089 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 13:48:49,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 16 [2022-11-23 13:48:49,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:49,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 78 [2022-11-23 13:48:49,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:49,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:49,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:49,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:49,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:49,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:49,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:49,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:49,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:49,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 54 [2022-11-23 13:48:49,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:49,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:49,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:49,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 43 [2022-11-23 13:48:49,176 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:48:49,186 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-23 13:48:49,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 87 [2022-11-23 13:48:49,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:49,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-23 13:48:49,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:49,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:49,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:49,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:49,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 43 [2022-11-23 13:48:49,527 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:48:49,566 INFO L321 Elim1Store]: treesize reduction 70, result has 19.5 percent of original size [2022-11-23 13:48:49,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 464 treesize of output 370 [2022-11-23 13:48:49,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:49,684 INFO L321 Elim1Store]: treesize reduction 230, result has 12.2 percent of original size [2022-11-23 13:48:49,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 462 treesize of output 467 [2022-11-23 13:48:49,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:48:49,790 INFO L321 Elim1Store]: treesize reduction 140, result has 24.3 percent of original size [2022-11-23 13:48:49,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 460 treesize of output 466 [2022-11-23 13:48:49,813 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:48:49,847 INFO L321 Elim1Store]: treesize reduction 94, result has 19.7 percent of original size [2022-11-23 13:48:49,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 454 treesize of output 423 [2022-11-23 13:48:50,112 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:48:50,168 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-23 13:48:50,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1274 treesize of output 843 [2022-11-23 13:48:50,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:50,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:50,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:50,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:48:50,214 INFO L321 Elim1Store]: treesize reduction 90, result has 1.1 percent of original size [2022-11-23 13:48:50,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 1107 treesize of output 1067 [2022-11-23 13:48:50,245 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:48:50,314 INFO L321 Elim1Store]: treesize reduction 72, result has 31.4 percent of original size [2022-11-23 13:48:50,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 1094 treesize of output 1046 [2022-11-23 13:48:50,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 13:48:50,662 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-23 13:48:50,663 INFO L350 Elim1Store]: Elim1 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 23 [2022-11-23 13:48:50,702 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:50,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:50,715 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 13:48:50,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-11-23 13:48:50,743 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-23 13:48:50,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2022-11-23 13:48:50,807 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-23 13:48:50,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 63 [2022-11-23 13:48:50,833 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-23 13:48:50,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 57 [2022-11-23 13:48:50,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-23 13:48:50,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 13:48:50,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 13:48:50,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 13:48:50,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 13:48:50,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-23 13:48:50,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 13:48:51,191 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-23 13:48:51,191 INFO L350 Elim1Store]: Elim1 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 153 treesize of output 151 [2022-11-23 13:48:51,237 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-23 13:48:51,237 INFO L350 Elim1Store]: Elim1 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 147 treesize of output 145 [2022-11-23 13:48:51,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:51,360 INFO L321 Elim1Store]: treesize reduction 96, result has 35.6 percent of original size [2022-11-23 13:48:51,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 139 treesize of output 185 [2022-11-23 13:48:51,421 INFO L321 Elim1Store]: treesize reduction 32, result has 49.2 percent of original size [2022-11-23 13:48:51,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 129 treesize of output 147 [2022-11-23 13:48:54,239 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 13:48:54,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 21 [2022-11-23 13:48:54,305 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:54,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:54,346 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-23 13:48:54,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 29 [2022-11-23 13:48:54,433 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:54,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:54,486 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 13:48:54,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 21 [2022-11-23 13:48:54,559 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:54,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:54,588 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:54,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 15 [2022-11-23 13:48:54,635 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:54,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-23 13:48:54,702 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:54,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:54,815 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:54,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 343 treesize of output 344 [2022-11-23 13:48:54,949 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:54,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 171 treesize of output 178 [2022-11-23 13:48:55,083 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:55,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:55,127 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-23 13:48:55,148 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-23 13:48:55,168 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-23 13:48:55,228 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:55,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-23 13:48:55,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:55,278 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-23 13:48:55,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 29 [2022-11-23 13:48:55,353 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:55,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:55,376 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-23 13:48:55,406 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:55,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-23 13:48:55,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:55,447 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-23 13:48:55,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 29 [2022-11-23 13:48:55,494 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-23 13:48:55,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 1 [2022-11-23 13:48:55,563 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:55,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-23 13:48:55,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:55,618 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-11-23 13:48:55,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 29 [2022-11-23 13:48:55,733 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:48:55,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 171 treesize of output 178 [2022-11-23 13:48:56,998 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:48:58,169 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2255#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (not (= (select |#valid| |ULTIMATE.start_main_~p~0#1.base|) 1)) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 13:48:58,169 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 13:48:58,170 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:48:58,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-11-23 13:48:58,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135923845] [2022-11-23 13:48:58,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 13:48:58,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-23 13:48:58,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:48:58,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-23 13:48:58,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1089, Unknown=2, NotChecked=0, Total=1260 [2022-11-23 13:48:58,172 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 22 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 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) [2022-11-23 13:48:58,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:48:58,712 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2022-11-23 13:48:58,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 13:48:58,713 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 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 [2022-11-23 13:48:58,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:48:58,713 INFO L225 Difference]: With dead ends: 83 [2022-11-23 13:48:58,713 INFO L226 Difference]: Without dead ends: 83 [2022-11-23 13:48:58,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=244, Invalid=1476, Unknown=2, NotChecked=0, Total=1722 [2022-11-23 13:48:58,715 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 192 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 13:48:58,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 98 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 13:48:58,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-23 13:48:58,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 62. [2022-11-23 13:48:58,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 53 states have (on average 1.320754716981132) internal successors, (70), 61 states have internal predecessors, (70), 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) [2022-11-23 13:48:58,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2022-11-23 13:48:58,720 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 19 [2022-11-23 13:48:58,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:48:58,721 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2022-11-23 13:48:58,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 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) [2022-11-23 13:48:58,721 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2022-11-23 13:48:58,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-23 13:48:58,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:48:58,722 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:48:58,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 13:48:58,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 13:48:58,927 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-23 13:48:58,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:48:58,927 INFO L85 PathProgramCache]: Analyzing trace with hash -576689175, now seen corresponding path program 1 times [2022-11-23 13:48:58,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:48:58,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764066501] [2022-11-23 13:48:58,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:48:58,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:48:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:48:59,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:48:59,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:48:59,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764066501] [2022-11-23 13:48:59,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764066501] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:48:59,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094400470] [2022-11-23 13:48:59,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:48:59,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:48:59,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:48:59,529 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:48:59,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b556c5-5035-4837-878d-0e1d76a7b3c0/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 13:48:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:48:59,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-23 13:48:59,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:48:59,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 13:48:59,697 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-23 13:48:59,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-23 13:48:59,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 13:48:59,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 13:48:59,868 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 13:48:59,868 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 22 [2022-11-23 13:48:59,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-23 13:48:59,887 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 13:48:59,887 INFO L350 Elim1Store]: Elim1 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 37 treesize of output 35 [2022-11-23 13:48:59,929 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 13:48:59,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2022-11-23 13:48:59,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-23 13:49:00,022 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:49:00,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-23 13:49:00,026 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:49:00,028 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 13:49:00,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 16 [2022-11-23 13:49:00,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:49:00,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:49:00,488 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 13:49:00,489 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-23 13:49:00,497 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 13:49:00,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2022-11-23 13:49:00,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 13:49:00,539 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 13:49:00,539 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2022-11-23 13:49:00,548 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 13:49:00,548 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2022-11-23 13:49:00,552 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:49:00,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:00,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:00,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-11-23 13:49:00,559 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:49:00,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:00,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:00,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-23 13:49:00,661 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-23 13:49:00,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-23 13:49:00,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:49:00,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094400470] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:49:00,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [538491671] [2022-11-23 13:49:00,771 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-23 13:49:00,772 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:49:00,772 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:49:00,772 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:49:00,772 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:49:00,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:00,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:00,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 13:49:00,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:00,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:00,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:00,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:00,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:00,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 13:49:00,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 13:49:00,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 13:49:00,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:00,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 13:49:00,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 13:49:00,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 13:49:00,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:00,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:00,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 13:49:00,982 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 13:49:00,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 16 [2022-11-23 13:49:00,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:00,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 78 [2022-11-23 13:49:01,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:01,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:01,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:01,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:01,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:01,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:01,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:01,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:01,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:01,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 54 [2022-11-23 13:49:01,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:01,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:01,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:01,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-23 13:49:01,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:01,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:01,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:01,075 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 13:49:01,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 41 [2022-11-23 13:49:01,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:01,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 87 [2022-11-23 13:49:01,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:01,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-23 13:49:01,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:01,536 INFO L321 Elim1Store]: treesize reduction 230, result has 12.2 percent of original size [2022-11-23 13:49:01,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 517 treesize of output 514 [2022-11-23 13:49:01,608 INFO L321 Elim1Store]: treesize reduction 104, result has 19.4 percent of original size [2022-11-23 13:49:01,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 519 treesize of output 411 [2022-11-23 13:49:01,664 INFO L321 Elim1Store]: treesize reduction 100, result has 18.7 percent of original size [2022-11-23 13:49:01,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 519 treesize of output 453 [2022-11-23 13:49:01,682 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:49:01,762 INFO L321 Elim1Store]: treesize reduction 202, result has 20.2 percent of original size [2022-11-23 13:49:01,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 515 treesize of output 521 [2022-11-23 13:49:02,008 INFO L321 Elim1Store]: treesize reduction 84, result has 25.7 percent of original size [2022-11-23 13:49:02,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 772 treesize of output 487 [2022-11-23 13:49:02,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:02,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:02,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:02,034 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:49:02,081 INFO L321 Elim1Store]: treesize reduction 211, result has 8.3 percent of original size [2022-11-23 13:49:02,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 623 treesize of output 607 [2022-11-23 13:49:02,156 INFO L321 Elim1Store]: treesize reduction 82, result has 28.7 percent of original size [2022-11-23 13:49:02,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 641 treesize of output 602 [2022-11-23 13:49:02,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 13:49:02,399 INFO L321 Elim1Store]: treesize reduction 44, result has 51.6 percent of original size [2022-11-23 13:49:02,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 121 [2022-11-23 13:49:02,466 INFO L321 Elim1Store]: treesize reduction 44, result has 51.6 percent of original size [2022-11-23 13:49:02,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 111 [2022-11-23 13:49:02,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:02,519 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 13:49:02,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 78 treesize of output 94 [2022-11-23 13:49:02,594 INFO L321 Elim1Store]: treesize reduction 62, result has 41.5 percent of original size [2022-11-23 13:49:02,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 77 treesize of output 111 [2022-11-23 13:49:09,304 WARN L233 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 796 DAG size of output: 548 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 13:49:09,307 INFO L321 Elim1Store]: treesize reduction 846, result has 55.3 percent of original size [2022-11-23 13:49:09,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 2 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 134 case distinctions, treesize of input 676 treesize of output 1640 [2022-11-23 13:49:10,183 INFO L217 Elim1Store]: Index analysis took 722 ms [2022-11-23 13:49:24,173 WARN L233 SmtUtils]: Spent 13.56s on a formula simplification. DAG size of input: 1068 DAG size of output: 928 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 13:49:24,176 INFO L321 Elim1Store]: treesize reduction 498, result has 80.4 percent of original size [2022-11-23 13:49:24,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 2 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 189 case distinctions, treesize of input 594 treesize of output 2543