./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext/tree_cnstr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 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_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext/tree_cnstr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh --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 ba983053090b7e7410066c63fe0cfe9ad27960a7dc19d54045684ba21359c88d --- 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-2329fc7 [2022-12-14 11:19:17,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:19:17,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:19:17,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:19:17,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:19:17,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:19:17,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:19:17,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:19:17,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:19:17,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:19:17,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:19:17,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:19:17,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:19:17,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:19:17,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:19:17,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:19:17,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:19:17,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:19:17,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:19:17,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:19:17,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:19:17,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:19:17,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:19:17,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:19:17,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:19:17,372 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:19:17,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:19:17,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:19:17,374 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:19:17,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:19:17,375 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:19:17,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:19:17,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:19:17,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:19:17,378 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:19:17,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:19:17,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:19:17,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:19:17,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:19:17,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:19:17,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:19:17,382 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 11:19:17,403 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:19:17,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:19:17,403 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:19:17,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:19:17,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:19:17,404 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:19:17,404 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:19:17,405 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:19:17,405 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:19:17,405 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:19:17,405 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:19:17,405 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:19:17,406 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:19:17,406 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:19:17,406 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:19:17,406 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:19:17,406 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:19:17,406 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:19:17,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 11:19:17,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 11:19:17,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:19:17,408 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:19:17,408 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 11:19:17,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:19:17,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:19:17,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:19:17,409 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 11:19:17,409 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 11:19:17,409 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 11:19:17,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:19:17,409 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 11:19:17,410 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:19:17,410 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:19:17,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:19:17,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:19:17,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:19:17,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:19:17,411 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:19:17,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:19:17,411 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:19:17,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:19:17,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:19:17,412 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_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba983053090b7e7410066c63fe0cfe9ad27960a7dc19d54045684ba21359c88d [2022-12-14 11:19:17,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:19:17,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:19:17,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:19:17,625 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:19:17,626 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:19:17,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/memsafety-ext/tree_cnstr.i [2022-12-14 11:19:20,119 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:19:20,334 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:19:20,335 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/sv-benchmarks/c/memsafety-ext/tree_cnstr.i [2022-12-14 11:19:20,344 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/data/dd9d1179d/77bddb18be0b4474bf03c04e7a800aa6/FLAG04a47f736 [2022-12-14 11:19:20,690 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/data/dd9d1179d/77bddb18be0b4474bf03c04e7a800aa6 [2022-12-14 11:19:20,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:19:20,696 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:19:20,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:19:20,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:19:20,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:19:20,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:19:20" (1/1) ... [2022-12-14 11:19:20,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@299be2b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:19:20, skipping insertion in model container [2022-12-14 11:19:20,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:19:20" (1/1) ... [2022-12-14 11:19:20,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:19:20,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:19:20,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:19:20,962 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:19:20,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:19:21,018 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:19:21,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:19:21 WrapperNode [2022-12-14 11:19:21,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:19:21,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:19:21,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:19:21,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:19:21,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:19:21" (1/1) ... [2022-12-14 11:19:21,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:19:21" (1/1) ... [2022-12-14 11:19:21,054 INFO L138 Inliner]: procedures = 123, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 138 [2022-12-14 11:19:21,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:19:21,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:19:21,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:19:21,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:19:21,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:19:21" (1/1) ... [2022-12-14 11:19:21,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:19:21" (1/1) ... [2022-12-14 11:19:21,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:19:21" (1/1) ... [2022-12-14 11:19:21,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:19:21" (1/1) ... [2022-12-14 11:19:21,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:19:21" (1/1) ... [2022-12-14 11:19:21,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:19:21" (1/1) ... [2022-12-14 11:19:21,079 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:19:21" (1/1) ... [2022-12-14 11:19:21,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:19:21" (1/1) ... [2022-12-14 11:19:21,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:19:21,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:19:21,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:19:21,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:19:21,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:19:21" (1/1) ... [2022-12-14 11:19:21,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:19:21,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:19:21,108 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:19:21,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:19:21,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 11:19:21,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:19:21,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 11:19:21,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 11:19:21,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 11:19:21,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:19:21,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:19:21,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:19:21,224 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:19:21,226 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:19:21,531 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:19:21,591 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:19:21,591 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 11:19:21,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:19:21 BoogieIcfgContainer [2022-12-14 11:19:21,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:19:21,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:19:21,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:19:21,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:19:21,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:19:20" (1/3) ... [2022-12-14 11:19:21,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2918946c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:19:21, skipping insertion in model container [2022-12-14 11:19:21,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:19:21" (2/3) ... [2022-12-14 11:19:21,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2918946c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:19:21, skipping insertion in model container [2022-12-14 11:19:21,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:19:21" (3/3) ... [2022-12-14 11:19:21,600 INFO L112 eAbstractionObserver]: Analyzing ICFG tree_cnstr.i [2022-12-14 11:19:21,614 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:19:21,614 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2022-12-14 11:19:21,654 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:19:21,660 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;@75779447, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:19:21,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2022-12-14 11:19:21,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 45 states have (on average 2.577777777777778) internal successors, (116), 101 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:19:21,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 11:19:21,668 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:21,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 11:19:21,669 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:19:21,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:21,673 INFO L85 PathProgramCache]: Analyzing trace with hash 7909, now seen corresponding path program 1 times [2022-12-14 11:19:21,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:21,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711311097] [2022-12-14 11:19:21,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:21,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:21,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:21,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:21,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:21,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711311097] [2022-12-14 11:19:21,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711311097] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:19:21,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:19:21,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 11:19:21,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634042377] [2022-12-14 11:19:21,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:19:21,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:19:21,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:19:21,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:19:21,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:19:21,874 INFO L87 Difference]: Start difference. First operand has 102 states, 45 states have (on average 2.577777777777778) internal successors, (116), 101 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-12-14 11:19:22,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:19:22,018 INFO L93 Difference]: Finished difference Result 139 states and 155 transitions. [2022-12-14 11:19:22,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:19:22,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-12-14 11:19:22,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:19:22,029 INFO L225 Difference]: With dead ends: 139 [2022-12-14 11:19:22,029 INFO L226 Difference]: Without dead ends: 137 [2022-12-14 11:19:22,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:19:22,033 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 106 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:19:22,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 76 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:19:22,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-12-14 11:19:22,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 99. [2022-12-14 11:19:22,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 45 states have (on average 2.4444444444444446) internal successors, (110), 98 states have internal predecessors, (110), 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) [2022-12-14 11:19:22,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 110 transitions. [2022-12-14 11:19:22,063 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 110 transitions. Word has length 2 [2022-12-14 11:19:22,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:19:22,064 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 110 transitions. [2022-12-14 11:19:22,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-12-14 11:19:22,064 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 110 transitions. [2022-12-14 11:19:22,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 11:19:22,065 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:22,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 11:19:22,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:19:22,065 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:19:22,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:22,066 INFO L85 PathProgramCache]: Analyzing trace with hash 7910, now seen corresponding path program 1 times [2022-12-14 11:19:22,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:22,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873343206] [2022-12-14 11:19:22,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:22,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:22,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:22,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:22,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873343206] [2022-12-14 11:19:22,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873343206] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:19:22,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:19:22,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 11:19:22,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003924675] [2022-12-14 11:19:22,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:19:22,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:19:22,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:19:22,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:19:22,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:19:22,144 INFO L87 Difference]: Start difference. First operand 99 states and 110 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-12-14 11:19:22,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:19:22,250 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2022-12-14 11:19:22,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:19:22,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-12-14 11:19:22,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:19:22,252 INFO L225 Difference]: With dead ends: 135 [2022-12-14 11:19:22,252 INFO L226 Difference]: Without dead ends: 135 [2022-12-14 11:19:22,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:19:22,253 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 104 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:19:22,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 82 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:19:22,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-12-14 11:19:22,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 97. [2022-12-14 11:19:22,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 45 states have (on average 2.4) internal successors, (108), 96 states have internal predecessors, (108), 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) [2022-12-14 11:19:22,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2022-12-14 11:19:22,258 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 2 [2022-12-14 11:19:22,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:19:22,258 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2022-12-14 11:19:22,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-12-14 11:19:22,258 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2022-12-14 11:19:22,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 11:19:22,259 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:22,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 11:19:22,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 11:19:22,259 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:19:22,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:22,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1286538703, now seen corresponding path program 1 times [2022-12-14 11:19:22,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:22,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968642049] [2022-12-14 11:19:22,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:22,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:22,303 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:22,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968642049] [2022-12-14 11:19:22,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968642049] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:19:22,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:19:22,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:19:22,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547814996] [2022-12-14 11:19:22,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:19:22,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:19:22,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:19:22,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:19:22,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:19:22,306 INFO L87 Difference]: Start difference. First operand 97 states and 108 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2022-12-14 11:19:22,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:19:22,426 INFO L93 Difference]: Finished difference Result 121 states and 138 transitions. [2022-12-14 11:19:22,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:19:22,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 [2022-12-14 11:19:22,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:19:22,431 INFO L225 Difference]: With dead ends: 121 [2022-12-14 11:19:22,431 INFO L226 Difference]: Without dead ends: 121 [2022-12-14 11:19:22,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:19:22,433 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 188 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:19:22,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 46 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:19:22,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-12-14 11:19:22,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 84. [2022-12-14 11:19:22,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 48 states have (on average 2.0416666666666665) internal successors, (98), 83 states have internal predecessors, (98), 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) [2022-12-14 11:19:22,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 98 transitions. [2022-12-14 11:19:22,442 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 98 transitions. Word has length 6 [2022-12-14 11:19:22,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:19:22,442 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 98 transitions. [2022-12-14 11:19:22,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2022-12-14 11:19:22,443 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 98 transitions. [2022-12-14 11:19:22,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 11:19:22,443 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:22,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 11:19:22,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 11:19:22,443 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:19:22,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:22,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1286538702, now seen corresponding path program 1 times [2022-12-14 11:19:22,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:22,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250683341] [2022-12-14 11:19:22,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:22,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:22,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:22,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:22,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250683341] [2022-12-14 11:19:22,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250683341] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:19:22,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:19:22,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:19:22,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710880709] [2022-12-14 11:19:22,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:19:22,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:19:22,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:19:22,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:19:22,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:19:22,564 INFO L87 Difference]: Start difference. First operand 84 states and 98 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) [2022-12-14 11:19:22,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:19:22,753 INFO L93 Difference]: Finished difference Result 182 states and 210 transitions. [2022-12-14 11:19:22,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:19:22,754 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 [2022-12-14 11:19:22,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:19:22,755 INFO L225 Difference]: With dead ends: 182 [2022-12-14 11:19:22,755 INFO L226 Difference]: Without dead ends: 182 [2022-12-14 11:19:22,755 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 [2022-12-14 11:19:22,756 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 205 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:19:22,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 76 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:19:22,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-12-14 11:19:22,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 135. [2022-12-14 11:19:22,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 99 states have (on average 1.9191919191919191) internal successors, (190), 134 states have internal predecessors, (190), 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) [2022-12-14 11:19:22,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 190 transitions. [2022-12-14 11:19:22,762 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 190 transitions. Word has length 6 [2022-12-14 11:19:22,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:19:22,762 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 190 transitions. [2022-12-14 11:19:22,762 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) [2022-12-14 11:19:22,762 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 190 transitions. [2022-12-14 11:19:22,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 11:19:22,762 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:22,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:19:22,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 11:19:22,763 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:19:22,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:22,763 INFO L85 PathProgramCache]: Analyzing trace with hash 586937635, now seen corresponding path program 1 times [2022-12-14 11:19:22,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:22,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688182764] [2022-12-14 11:19:22,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:22,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:22,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:22,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:22,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688182764] [2022-12-14 11:19:22,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688182764] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:19:22,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:19:22,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:19:22,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292400438] [2022-12-14 11:19:22,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:19:22,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:19:22,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:19:22,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:19:22,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:19:22,795 INFO L87 Difference]: Start difference. First operand 135 states and 190 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-12-14 11:19:22,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:19:22,828 INFO L93 Difference]: Finished difference Result 149 states and 188 transitions. [2022-12-14 11:19:22,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:19:22,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2022-12-14 11:19:22,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:19:22,830 INFO L225 Difference]: With dead ends: 149 [2022-12-14 11:19:22,830 INFO L226 Difference]: Without dead ends: 149 [2022-12-14 11:19:22,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:19:22,832 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 83 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:19:22,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 106 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:19:22,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-12-14 11:19:22,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 135. [2022-12-14 11:19:22,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 99 states have (on average 1.898989898989899) internal successors, (188), 134 states have internal predecessors, (188), 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) [2022-12-14 11:19:22,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 188 transitions. [2022-12-14 11:19:22,840 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 188 transitions. Word has length 8 [2022-12-14 11:19:22,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:19:22,840 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 188 transitions. [2022-12-14 11:19:22,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-12-14 11:19:22,840 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 188 transitions. [2022-12-14 11:19:22,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 11:19:22,841 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:22,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:19:22,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 11:19:22,841 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:19:22,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:22,842 INFO L85 PathProgramCache]: Analyzing trace with hash 451253929, now seen corresponding path program 1 times [2022-12-14 11:19:22,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:22,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567831224] [2022-12-14 11:19:22,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:22,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:22,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:22,999 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:22,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567831224] [2022-12-14 11:19:22,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567831224] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:19:22,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:19:22,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 11:19:23,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444379733] [2022-12-14 11:19:23,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:19:23,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:19:23,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:19:23,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:19:23,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:19:23,001 INFO L87 Difference]: Start difference. First operand 135 states and 188 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2022-12-14 11:19:23,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:19:23,189 INFO L93 Difference]: Finished difference Result 228 states and 296 transitions. [2022-12-14 11:19:23,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 11:19:23,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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 [2022-12-14 11:19:23,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:19:23,190 INFO L225 Difference]: With dead ends: 228 [2022-12-14 11:19:23,190 INFO L226 Difference]: Without dead ends: 228 [2022-12-14 11:19:23,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:19:23,191 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 116 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:19:23,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 212 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:19:23,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-12-14 11:19:23,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 146. [2022-12-14 11:19:23,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 110 states have (on average 1.8363636363636364) internal successors, (202), 145 states have internal predecessors, (202), 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) [2022-12-14 11:19:23,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 202 transitions. [2022-12-14 11:19:23,199 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 202 transitions. Word has length 11 [2022-12-14 11:19:23,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:19:23,199 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 202 transitions. [2022-12-14 11:19:23,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2022-12-14 11:19:23,199 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 202 transitions. [2022-12-14 11:19:23,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 11:19:23,200 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:23,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:19:23,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 11:19:23,200 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:19:23,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:23,201 INFO L85 PathProgramCache]: Analyzing trace with hash -25059268, now seen corresponding path program 1 times [2022-12-14 11:19:23,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:23,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666394946] [2022-12-14 11:19:23,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:23,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:23,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:23,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:23,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666394946] [2022-12-14 11:19:23,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666394946] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:19:23,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:19:23,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:19:23,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11900114] [2022-12-14 11:19:23,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:19:23,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:19:23,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:19:23,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:19:23,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:19:23,224 INFO L87 Difference]: Start difference. First operand 146 states and 202 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2022-12-14 11:19:23,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:19:23,253 INFO L93 Difference]: Finished difference Result 149 states and 205 transitions. [2022-12-14 11:19:23,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:19:23,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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 [2022-12-14 11:19:23,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:19:23,254 INFO L225 Difference]: With dead ends: 149 [2022-12-14 11:19:23,255 INFO L226 Difference]: Without dead ends: 149 [2022-12-14 11:19:23,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:19:23,256 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:19:23,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 143 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:19:23,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-12-14 11:19:23,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2022-12-14 11:19:23,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 113 states have (on average 1.8141592920353982) internal successors, (205), 148 states have internal predecessors, (205), 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) [2022-12-14 11:19:23,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 205 transitions. [2022-12-14 11:19:23,262 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 205 transitions. Word has length 12 [2022-12-14 11:19:23,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:19:23,262 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 205 transitions. [2022-12-14 11:19:23,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2022-12-14 11:19:23,263 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 205 transitions. [2022-12-14 11:19:23,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 11:19:23,263 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:23,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:19:23,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 11:19:23,264 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:19:23,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:23,264 INFO L85 PathProgramCache]: Analyzing trace with hash -772928796, now seen corresponding path program 1 times [2022-12-14 11:19:23,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:23,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600223512] [2022-12-14 11:19:23,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:23,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:23,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:23,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:23,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600223512] [2022-12-14 11:19:23,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600223512] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:19:23,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:19:23,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:19:23,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925134760] [2022-12-14 11:19:23,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:19:23,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:19:23,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:19:23,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:19:23,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:19:23,293 INFO L87 Difference]: Start difference. First operand 149 states and 205 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-12-14 11:19:23,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:19:23,340 INFO L93 Difference]: Finished difference Result 161 states and 211 transitions. [2022-12-14 11:19:23,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:19:23,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 [2022-12-14 11:19:23,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:19:23,342 INFO L225 Difference]: With dead ends: 161 [2022-12-14 11:19:23,342 INFO L226 Difference]: Without dead ends: 161 [2022-12-14 11:19:23,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:19:23,343 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 12 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:19:23,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 137 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:19:23,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-12-14 11:19:23,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 149. [2022-12-14 11:19:23,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 113 states have (on average 1.7876106194690264) internal successors, (202), 148 states have internal predecessors, (202), 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) [2022-12-14 11:19:23,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 202 transitions. [2022-12-14 11:19:23,347 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 202 transitions. Word has length 13 [2022-12-14 11:19:23,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:19:23,347 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 202 transitions. [2022-12-14 11:19:23,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-12-14 11:19:23,348 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 202 transitions. [2022-12-14 11:19:23,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 11:19:23,348 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:23,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:19:23,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 11:19:23,348 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:19:23,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:23,349 INFO L85 PathProgramCache]: Analyzing trace with hash -25836561, now seen corresponding path program 1 times [2022-12-14 11:19:23,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:23,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658992324] [2022-12-14 11:19:23,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:23,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:23,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:23,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:23,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658992324] [2022-12-14 11:19:23,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658992324] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:19:23,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:19:23,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:19:23,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966746159] [2022-12-14 11:19:23,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:19:23,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:19:23,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:19:23,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:19:23,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:19:23,448 INFO L87 Difference]: Start difference. First operand 149 states and 202 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2022-12-14 11:19:23,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:19:23,549 INFO L93 Difference]: Finished difference Result 148 states and 200 transitions. [2022-12-14 11:19:23,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:19:23,549 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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 [2022-12-14 11:19:23,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:19:23,550 INFO L225 Difference]: With dead ends: 148 [2022-12-14 11:19:23,550 INFO L226 Difference]: Without dead ends: 148 [2022-12-14 11:19:23,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:19:23,551 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 5 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:19:23,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 190 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:19:23,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-12-14 11:19:23,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2022-12-14 11:19:23,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 113 states have (on average 1.7699115044247788) internal successors, (200), 147 states have internal predecessors, (200), 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) [2022-12-14 11:19:23,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 200 transitions. [2022-12-14 11:19:23,556 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 200 transitions. Word has length 13 [2022-12-14 11:19:23,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:19:23,556 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 200 transitions. [2022-12-14 11:19:23,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2022-12-14 11:19:23,557 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 200 transitions. [2022-12-14 11:19:23,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 11:19:23,557 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:23,557 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:19:23,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 11:19:23,558 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:19:23,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:23,558 INFO L85 PathProgramCache]: Analyzing trace with hash -25836560, now seen corresponding path program 1 times [2022-12-14 11:19:23,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:23,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918483172] [2022-12-14 11:19:23,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:23,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:23,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:23,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:23,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918483172] [2022-12-14 11:19:23,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918483172] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:19:23,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:19:23,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:19:23,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217727921] [2022-12-14 11:19:23,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:19:23,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:19:23,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:19:23,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:19:23,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:19:23,732 INFO L87 Difference]: Start difference. First operand 148 states and 200 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2022-12-14 11:19:23,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:19:23,854 INFO L93 Difference]: Finished difference Result 147 states and 198 transitions. [2022-12-14 11:19:23,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:19:23,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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 [2022-12-14 11:19:23,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:19:23,856 INFO L225 Difference]: With dead ends: 147 [2022-12-14 11:19:23,856 INFO L226 Difference]: Without dead ends: 147 [2022-12-14 11:19:23,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:19:23,856 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 3 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:19:23,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 167 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:19:23,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-12-14 11:19:23,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2022-12-14 11:19:23,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 113 states have (on average 1.752212389380531) internal successors, (198), 146 states have internal predecessors, (198), 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) [2022-12-14 11:19:23,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 198 transitions. [2022-12-14 11:19:23,861 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 198 transitions. Word has length 13 [2022-12-14 11:19:23,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:19:23,861 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 198 transitions. [2022-12-14 11:19:23,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2022-12-14 11:19:23,861 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 198 transitions. [2022-12-14 11:19:23,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 11:19:23,862 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:23,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:19:23,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 11:19:23,862 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:19:23,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:23,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1689027667, now seen corresponding path program 1 times [2022-12-14 11:19:23,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:23,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129998847] [2022-12-14 11:19:23,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:23,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:23,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:23,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:23,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129998847] [2022-12-14 11:19:23,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129998847] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:19:23,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:19:23,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 11:19:23,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385848518] [2022-12-14 11:19:23,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:19:23,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:19:23,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:19:23,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:19:23,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:19:23,972 INFO L87 Difference]: Start difference. First operand 147 states and 198 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2022-12-14 11:19:24,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:19:24,119 INFO L93 Difference]: Finished difference Result 215 states and 275 transitions. [2022-12-14 11:19:24,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 11:19:24,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2022-12-14 11:19:24,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:19:24,120 INFO L225 Difference]: With dead ends: 215 [2022-12-14 11:19:24,120 INFO L226 Difference]: Without dead ends: 215 [2022-12-14 11:19:24,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:19:24,121 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 91 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:19:24,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 219 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:19:24,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-12-14 11:19:24,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 176. [2022-12-14 11:19:24,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 142 states have (on average 1.7535211267605635) internal successors, (249), 175 states have internal predecessors, (249), 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) [2022-12-14 11:19:24,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 249 transitions. [2022-12-14 11:19:24,127 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 249 transitions. Word has length 14 [2022-12-14 11:19:24,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:19:24,127 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 249 transitions. [2022-12-14 11:19:24,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2022-12-14 11:19:24,127 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 249 transitions. [2022-12-14 11:19:24,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 11:19:24,128 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:24,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:19:24,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 11:19:24,128 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:19:24,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:24,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1809028201, now seen corresponding path program 1 times [2022-12-14 11:19:24,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:24,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130258950] [2022-12-14 11:19:24,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:24,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:24,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:24,160 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:24,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130258950] [2022-12-14 11:19:24,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130258950] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:19:24,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:19:24,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:19:24,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758546471] [2022-12-14 11:19:24,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:19:24,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:19:24,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:19:24,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:19:24,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:19:24,161 INFO L87 Difference]: Start difference. First operand 176 states and 249 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-12-14 11:19:24,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:19:24,262 INFO L93 Difference]: Finished difference Result 205 states and 261 transitions. [2022-12-14 11:19:24,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:19:24,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2022-12-14 11:19:24,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:19:24,264 INFO L225 Difference]: With dead ends: 205 [2022-12-14 11:19:24,264 INFO L226 Difference]: Without dead ends: 205 [2022-12-14 11:19:24,264 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 [2022-12-14 11:19:24,265 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 165 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:19:24,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 129 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:19:24,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-12-14 11:19:24,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 177. [2022-12-14 11:19:24,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 143 states have (on average 1.7482517482517483) internal successors, (250), 176 states have internal predecessors, (250), 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) [2022-12-14 11:19:24,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 250 transitions. [2022-12-14 11:19:24,269 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 250 transitions. Word has length 14 [2022-12-14 11:19:24,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:19:24,269 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 250 transitions. [2022-12-14 11:19:24,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-12-14 11:19:24,269 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 250 transitions. [2022-12-14 11:19:24,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 11:19:24,270 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:24,270 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:19:24,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 11:19:24,270 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:19:24,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:24,270 INFO L85 PathProgramCache]: Analyzing trace with hash 245949691, now seen corresponding path program 1 times [2022-12-14 11:19:24,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:24,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005076207] [2022-12-14 11:19:24,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:24,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:24,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:24,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:24,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005076207] [2022-12-14 11:19:24,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005076207] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:19:24,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:19:24,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 11:19:24,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483608263] [2022-12-14 11:19:24,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:19:24,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:19:24,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:19:24,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:19:24,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:19:24,335 INFO L87 Difference]: Start difference. First operand 177 states and 250 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2022-12-14 11:19:24,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:19:24,435 INFO L93 Difference]: Finished difference Result 190 states and 266 transitions. [2022-12-14 11:19:24,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:19:24,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 [2022-12-14 11:19:24,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:19:24,437 INFO L225 Difference]: With dead ends: 190 [2022-12-14 11:19:24,437 INFO L226 Difference]: Without dead ends: 190 [2022-12-14 11:19:24,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:19:24,437 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 49 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:19:24,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 133 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:19:24,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-12-14 11:19:24,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 184. [2022-12-14 11:19:24,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 150 states have (on average 1.7266666666666666) internal successors, (259), 183 states have internal predecessors, (259), 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) [2022-12-14 11:19:24,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 259 transitions. [2022-12-14 11:19:24,442 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 259 transitions. Word has length 15 [2022-12-14 11:19:24,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:19:24,442 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 259 transitions. [2022-12-14 11:19:24,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2022-12-14 11:19:24,442 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 259 transitions. [2022-12-14 11:19:24,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 11:19:24,443 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:24,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:19:24,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 11:19:24,443 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:19:24,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:24,444 INFO L85 PathProgramCache]: Analyzing trace with hash 245955643, now seen corresponding path program 1 times [2022-12-14 11:19:24,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:24,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726156470] [2022-12-14 11:19:24,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:24,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:24,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:24,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:24,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726156470] [2022-12-14 11:19:24,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726156470] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:19:24,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:19:24,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 11:19:24,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798444491] [2022-12-14 11:19:24,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:19:24,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:19:24,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:19:24,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:19:24,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:19:24,560 INFO L87 Difference]: Start difference. First operand 184 states and 259 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2022-12-14 11:19:24,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:19:24,699 INFO L93 Difference]: Finished difference Result 184 states and 240 transitions. [2022-12-14 11:19:24,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 11:19:24,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 [2022-12-14 11:19:24,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:19:24,700 INFO L225 Difference]: With dead ends: 184 [2022-12-14 11:19:24,701 INFO L226 Difference]: Without dead ends: 184 [2022-12-14 11:19:24,701 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 [2022-12-14 11:19:24,701 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 44 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:19:24,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 220 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:19:24,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-12-14 11:19:24,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 160. [2022-12-14 11:19:24,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.6904761904761905) internal successors, (213), 159 states have internal predecessors, (213), 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) [2022-12-14 11:19:24,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 213 transitions. [2022-12-14 11:19:24,706 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 213 transitions. Word has length 15 [2022-12-14 11:19:24,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:19:24,706 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 213 transitions. [2022-12-14 11:19:24,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2022-12-14 11:19:24,706 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 213 transitions. [2022-12-14 11:19:24,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 11:19:24,706 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:24,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:19:24,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 11:19:24,707 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:19:24,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:24,707 INFO L85 PathProgramCache]: Analyzing trace with hash 941013543, now seen corresponding path program 1 times [2022-12-14 11:19:24,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:24,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869086530] [2022-12-14 11:19:24,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:24,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:24,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:24,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:24,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869086530] [2022-12-14 11:19:24,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869086530] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:19:24,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:19:24,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 11:19:24,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138615043] [2022-12-14 11:19:24,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:19:24,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 11:19:24,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:19:24,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 11:19:24,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-14 11:19:24,875 INFO L87 Difference]: Start difference. First operand 160 states and 213 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 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) [2022-12-14 11:19:25,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:19:25,215 INFO L93 Difference]: Finished difference Result 206 states and 268 transitions. [2022-12-14 11:19:25,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 11:19:25,215 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 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 [2022-12-14 11:19:25,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:19:25,216 INFO L225 Difference]: With dead ends: 206 [2022-12-14 11:19:25,216 INFO L226 Difference]: Without dead ends: 206 [2022-12-14 11:19:25,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-12-14 11:19:25,217 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 158 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:19:25,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 224 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:19:25,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-12-14 11:19:25,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 159. [2022-12-14 11:19:25,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 126 states have (on average 1.6746031746031746) internal successors, (211), 158 states have internal predecessors, (211), 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) [2022-12-14 11:19:25,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 211 transitions. [2022-12-14 11:19:25,220 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 211 transitions. Word has length 15 [2022-12-14 11:19:25,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:19:25,220 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 211 transitions. [2022-12-14 11:19:25,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 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) [2022-12-14 11:19:25,220 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 211 transitions. [2022-12-14 11:19:25,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 11:19:25,220 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:25,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:19:25,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 11:19:25,220 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:19:25,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:25,221 INFO L85 PathProgramCache]: Analyzing trace with hash 941013544, now seen corresponding path program 1 times [2022-12-14 11:19:25,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:25,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812652199] [2022-12-14 11:19:25,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:25,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:25,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:25,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:25,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812652199] [2022-12-14 11:19:25,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812652199] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:19:25,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:19:25,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 11:19:25,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925025870] [2022-12-14 11:19:25,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:19:25,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 11:19:25,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:19:25,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 11:19:25,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-14 11:19:25,424 INFO L87 Difference]: Start difference. First operand 159 states and 211 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 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) [2022-12-14 11:19:25,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:19:25,791 INFO L93 Difference]: Finished difference Result 205 states and 266 transitions. [2022-12-14 11:19:25,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 11:19:25,791 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 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 [2022-12-14 11:19:25,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:19:25,792 INFO L225 Difference]: With dead ends: 205 [2022-12-14 11:19:25,792 INFO L226 Difference]: Without dead ends: 205 [2022-12-14 11:19:25,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-12-14 11:19:25,792 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 154 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:19:25,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 187 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:19:25,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-12-14 11:19:25,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 158. [2022-12-14 11:19:25,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 126 states have (on average 1.6587301587301588) internal successors, (209), 157 states have internal predecessors, (209), 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) [2022-12-14 11:19:25,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 209 transitions. [2022-12-14 11:19:25,795 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 209 transitions. Word has length 15 [2022-12-14 11:19:25,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:19:25,795 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 209 transitions. [2022-12-14 11:19:25,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 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) [2022-12-14 11:19:25,795 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 209 transitions. [2022-12-14 11:19:25,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 11:19:25,796 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:25,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:19:25,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 11:19:25,796 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:19:25,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:25,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1532005382, now seen corresponding path program 1 times [2022-12-14 11:19:25,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:25,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619985105] [2022-12-14 11:19:25,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:25,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:25,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:25,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:25,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619985105] [2022-12-14 11:19:25,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619985105] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:19:25,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:19:25,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:19:25,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832479310] [2022-12-14 11:19:25,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:19:25,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:19:25,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:19:25,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:19:25,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:19:25,854 INFO L87 Difference]: Start difference. First operand 158 states and 209 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 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) [2022-12-14 11:19:25,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:19:25,957 INFO L93 Difference]: Finished difference Result 157 states and 207 transitions. [2022-12-14 11:19:25,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:19:25,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 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 [2022-12-14 11:19:25,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:19:25,958 INFO L225 Difference]: With dead ends: 157 [2022-12-14 11:19:25,958 INFO L226 Difference]: Without dead ends: 157 [2022-12-14 11:19:25,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:19:25,959 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 5 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:19:25,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 180 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:19:25,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-12-14 11:19:25,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2022-12-14 11:19:25,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 126 states have (on average 1.6428571428571428) internal successors, (207), 156 states have internal predecessors, (207), 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) [2022-12-14 11:19:25,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 207 transitions. [2022-12-14 11:19:25,963 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 207 transitions. Word has length 15 [2022-12-14 11:19:25,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:19:25,963 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 207 transitions. [2022-12-14 11:19:25,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 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) [2022-12-14 11:19:25,963 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 207 transitions. [2022-12-14 11:19:25,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 11:19:25,964 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:25,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:19:25,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 11:19:25,964 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:19:25,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:25,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1532005383, now seen corresponding path program 1 times [2022-12-14 11:19:25,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:25,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602810241] [2022-12-14 11:19:25,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:25,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:26,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:26,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:26,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602810241] [2022-12-14 11:19:26,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602810241] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:19:26,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:19:26,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:19:26,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053313441] [2022-12-14 11:19:26,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:19:26,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:19:26,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:19:26,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:19:26,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:19:26,100 INFO L87 Difference]: Start difference. First operand 157 states and 207 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 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) [2022-12-14 11:19:26,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:19:26,213 INFO L93 Difference]: Finished difference Result 156 states and 205 transitions. [2022-12-14 11:19:26,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:19:26,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 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 [2022-12-14 11:19:26,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:19:26,215 INFO L225 Difference]: With dead ends: 156 [2022-12-14 11:19:26,215 INFO L226 Difference]: Without dead ends: 156 [2022-12-14 11:19:26,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:19:26,216 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 3 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:19:26,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 157 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:19:26,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-12-14 11:19:26,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2022-12-14 11:19:26,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 126 states have (on average 1.626984126984127) internal successors, (205), 155 states have internal predecessors, (205), 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) [2022-12-14 11:19:26,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 205 transitions. [2022-12-14 11:19:26,220 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 205 transitions. Word has length 15 [2022-12-14 11:19:26,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:19:26,220 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 205 transitions. [2022-12-14 11:19:26,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 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) [2022-12-14 11:19:26,220 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 205 transitions. [2022-12-14 11:19:26,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 11:19:26,220 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:26,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:19:26,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 11:19:26,220 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:19:26,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:26,221 INFO L85 PathProgramCache]: Analyzing trace with hash -490255891, now seen corresponding path program 1 times [2022-12-14 11:19:26,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:26,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431674904] [2022-12-14 11:19:26,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:26,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:26,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:26,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:26,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431674904] [2022-12-14 11:19:26,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431674904] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:19:26,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351445245] [2022-12-14 11:19:26,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:26,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:19:26,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:19:26,265 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:19:26,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 11:19:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:26,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 11:19:26,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:19:26,414 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 [2022-12-14 11:19:26,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:26,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:19:26,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:26,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351445245] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:19:26,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1611434548] [2022-12-14 11:19:26,481 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-12-14 11:19:26,481 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:19:26,485 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:19:26,489 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:19:26,490 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:19:26,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:26,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:26,530 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 [2022-12-14 11:19:26,546 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 [2022-12-14 11:19:26,553 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 [2022-12-14 11:19:26,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:26,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 30 treesize of output 21 [2022-12-14 11:19:26,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:26,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 34 treesize of output 21 [2022-12-14 11:19:26,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:26,591 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 21 treesize of output 20 [2022-12-14 11:19:26,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:26,601 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 21 treesize of output 20 [2022-12-14 11:19:27,027 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:19:28,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1611434548] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:19:28,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:19:28,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [3, 3, 3] total 15 [2022-12-14 11:19:28,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602857108] [2022-12-14 11:19:28,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:19:28,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 11:19:28,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:19:28,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 11:19:28,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-12-14 11:19:28,333 INFO L87 Difference]: Start difference. First operand 156 states and 205 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 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) [2022-12-14 11:19:29,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:19:29,016 INFO L93 Difference]: Finished difference Result 169 states and 218 transitions. [2022-12-14 11:19:29,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 11:19:29,017 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 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 [2022-12-14 11:19:29,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:19:29,017 INFO L225 Difference]: With dead ends: 169 [2022-12-14 11:19:29,018 INFO L226 Difference]: Without dead ends: 150 [2022-12-14 11:19:29,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-12-14 11:19:29,018 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 22 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:19:29,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 144 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:19:29,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-12-14 11:19:29,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-12-14 11:19:29,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 120 states have (on average 1.65) internal successors, (198), 149 states have internal predecessors, (198), 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) [2022-12-14 11:19:29,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 198 transitions. [2022-12-14 11:19:29,022 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 198 transitions. Word has length 17 [2022-12-14 11:19:29,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:19:29,022 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 198 transitions. [2022-12-14 11:19:29,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 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) [2022-12-14 11:19:29,023 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 198 transitions. [2022-12-14 11:19:29,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 11:19:29,023 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:29,023 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:19:29,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:19:29,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:19:29,225 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:19:29,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:29,226 INFO L85 PathProgramCache]: Analyzing trace with hash -916505773, now seen corresponding path program 1 times [2022-12-14 11:19:29,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:29,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398010368] [2022-12-14 11:19:29,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:29,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:29,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:29,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:29,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398010368] [2022-12-14 11:19:29,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398010368] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:19:29,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:19:29,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 11:19:29,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063547987] [2022-12-14 11:19:29,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:19:29,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 11:19:29,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:19:29,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 11:19:29,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-14 11:19:29,391 INFO L87 Difference]: Start difference. First operand 150 states and 198 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 9 states have internal predecessors, (17), 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) [2022-12-14 11:19:29,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:19:29,596 INFO L93 Difference]: Finished difference Result 195 states and 252 transitions. [2022-12-14 11:19:29,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 11:19:29,597 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 9 states have internal predecessors, (17), 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 [2022-12-14 11:19:29,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:19:29,597 INFO L225 Difference]: With dead ends: 195 [2022-12-14 11:19:29,597 INFO L226 Difference]: Without dead ends: 195 [2022-12-14 11:19:29,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-12-14 11:19:29,598 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 171 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:19:29,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 139 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:19:29,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-12-14 11:19:29,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 149. [2022-12-14 11:19:29,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 120 states have (on average 1.6416666666666666) internal successors, (197), 148 states have internal predecessors, (197), 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) [2022-12-14 11:19:29,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 197 transitions. [2022-12-14 11:19:29,600 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 197 transitions. Word has length 17 [2022-12-14 11:19:29,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:19:29,601 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 197 transitions. [2022-12-14 11:19:29,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 9 states have internal predecessors, (17), 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) [2022-12-14 11:19:29,601 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 197 transitions. [2022-12-14 11:19:29,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 11:19:29,601 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:29,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:19:29,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 11:19:29,601 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:19:29,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:29,602 INFO L85 PathProgramCache]: Analyzing trace with hash -916505772, now seen corresponding path program 1 times [2022-12-14 11:19:29,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:29,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892096013] [2022-12-14 11:19:29,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:29,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:29,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:29,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:29,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892096013] [2022-12-14 11:19:29,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892096013] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:19:29,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:19:29,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 11:19:29,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732810105] [2022-12-14 11:19:29,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:19:29,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 11:19:29,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:19:29,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 11:19:29,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-14 11:19:29,783 INFO L87 Difference]: Start difference. First operand 149 states and 197 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 9 states have internal predecessors, (17), 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) [2022-12-14 11:19:30,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:19:30,042 INFO L93 Difference]: Finished difference Result 194 states and 251 transitions. [2022-12-14 11:19:30,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 11:19:30,043 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 9 states have internal predecessors, (17), 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 [2022-12-14 11:19:30,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:19:30,043 INFO L225 Difference]: With dead ends: 194 [2022-12-14 11:19:30,043 INFO L226 Difference]: Without dead ends: 194 [2022-12-14 11:19:30,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-12-14 11:19:30,044 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 165 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:19:30,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 127 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:19:30,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-12-14 11:19:30,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 148. [2022-12-14 11:19:30,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 120 states have (on average 1.6333333333333333) internal successors, (196), 147 states have internal predecessors, (196), 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) [2022-12-14 11:19:30,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 196 transitions. [2022-12-14 11:19:30,049 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 196 transitions. Word has length 17 [2022-12-14 11:19:30,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:19:30,049 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 196 transitions. [2022-12-14 11:19:30,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 9 states have internal predecessors, (17), 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) [2022-12-14 11:19:30,049 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 196 transitions. [2022-12-14 11:19:30,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 11:19:30,049 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:30,050 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:19:30,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-14 11:19:30,050 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:19:30,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:30,050 INFO L85 PathProgramCache]: Analyzing trace with hash -109306794, now seen corresponding path program 1 times [2022-12-14 11:19:30,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:30,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357699579] [2022-12-14 11:19:30,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:30,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:30,634 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:30,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:30,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357699579] [2022-12-14 11:19:30,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357699579] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:19:30,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352917079] [2022-12-14 11:19:30,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:30,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:19:30,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:19:30,636 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:19:30,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 11:19:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:30,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-14 11:19:30,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:19:30,739 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 [2022-12-14 11:19:30,742 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 [2022-12-14 11:19:30,877 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:19:30,877 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 [2022-12-14 11:19:30,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:30,923 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 21 treesize of output 20 [2022-12-14 11:19:30,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:30,935 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 [2022-12-14 11:19:31,029 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:19:31,029 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 2 case distinctions, treesize of input 38 treesize of output 37 [2022-12-14 11:19:31,034 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 0 case distinctions, treesize of input 20 treesize of output 22 [2022-12-14 11:19:31,115 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:19:31,116 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 [2022-12-14 11:19:31,120 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 20 treesize of output 22 [2022-12-14 11:19:31,303 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:19:31,303 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 55 treesize of output 37 [2022-12-14 11:19:31,308 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:19:31,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:31,311 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:19:31,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 24 [2022-12-14 11:19:31,324 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:31,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:19:32,287 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:19:32,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 114 treesize of output 132 [2022-12-14 11:19:39,850 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:19:39,855 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:19:39,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 41 [2022-12-14 11:19:39,864 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:19:39,877 INFO L321 Elim1Store]: treesize reduction 5, result has 73.7 percent of original size [2022-12-14 11:19:39,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 125 treesize of output 98 [2022-12-14 11:19:39,885 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 15 treesize of output 13 [2022-12-14 11:19:39,909 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:19:39,912 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-14 11:19:39,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 1 [2022-12-14 11:19:39,919 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:39,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352917079] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:19:39,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [868379582] [2022-12-14 11:19:39,922 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-12-14 11:19:39,922 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:19:39,922 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:19:39,922 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:19:39,922 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:19:39,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:39,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:39,948 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 [2022-12-14 11:19:39,959 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 [2022-12-14 11:19:39,966 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 [2022-12-14 11:19:39,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:39,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 30 treesize of output 21 [2022-12-14 11:19:39,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:39,987 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 21 treesize of output 20 [2022-12-14 11:19:39,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:39,995 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 21 treesize of output 20 [2022-12-14 11:19:40,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:40,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 34 treesize of output 21 [2022-12-14 11:19:40,154 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 11:19:40,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-14 11:19:40,173 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:19:40,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-12-14 11:19:40,186 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 [2022-12-14 11:19:40,190 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 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 11:19:40,196 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 19 treesize of output 11 [2022-12-14 11:19:40,220 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-14 11:19:40,220 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 138 treesize of output 92 [2022-12-14 11:19:40,228 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 74 [2022-12-14 11:19:40,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2022-12-14 11:19:40,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:40,263 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 11:19:40,263 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 2 case distinctions, treesize of input 168 treesize of output 117 [2022-12-14 11:19:40,277 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-12-14 11:19:40,278 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 96 [2022-12-14 11:19:40,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 1 [2022-12-14 11:19:40,470 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:19:40,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-12-14 11:19:40,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 11:19:40,487 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 19 treesize of output 11 [2022-12-14 11:19:40,493 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 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 11:19:40,499 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 [2022-12-14 11:19:40,518 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-14 11:19:40,518 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 138 treesize of output 92 [2022-12-14 11:19:40,524 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 74 [2022-12-14 11:19:40,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 1 [2022-12-14 11:19:40,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:40,561 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 11:19:40,561 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 2 case distinctions, treesize of input 168 treesize of output 117 [2022-12-14 11:19:40,576 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-12-14 11:19:40,576 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 96 [2022-12-14 11:19:40,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 1 [2022-12-14 11:19:41,027 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:19:41,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-12-14 11:19:41,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 11:19:41,048 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 [2022-12-14 11:19:41,052 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 19 treesize of output 11 [2022-12-14 11:19:41,058 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 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 11:19:41,064 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:19:42,930 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7282#(and (or (and (<= |ULTIMATE.start_main_~n~0#1.offset| 0) (= |ULTIMATE.start_main_~root~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) (and (exists ((|v_ULTIMATE.start_main_~n~0#1.base_122| Int) (|v_ULTIMATE.start_main_~n~0#1.offset_105| Int)) (and (<= 0 |v_ULTIMATE.start_main_~n~0#1.offset_105|) (= 1 (select |#valid| |v_ULTIMATE.start_main_~n~0#1.base_122|)) (= |ULTIMATE.start_main_~n~0#1.offset| (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~n~0#1.base_122|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_105| 4))) (<= (+ |v_ULTIMATE.start_main_~n~0#1.offset_105| 8) (select |#length| |v_ULTIMATE.start_main_~n~0#1.base_122|)) (= |ULTIMATE.start_main_~n~0#1.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_122|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_105| 4))))) (= |ULTIMATE.start_main_~root~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) (not (= (select |#valid| |ULTIMATE.start_main_~n~0#1.base|) 1)))' at error location [2022-12-14 11:19:42,930 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:19:42,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:19:42,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 36 [2022-12-14 11:19:42,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475412791] [2022-12-14 11:19:42,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:19:42,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-14 11:19:42,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:19:42,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-14 11:19:42,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=2470, Unknown=34, NotChecked=0, Total=2862 [2022-12-14 11:19:42,931 INFO L87 Difference]: Start difference. First operand 148 states and 196 transitions. Second operand has 37 states, 37 states have (on average 1.864864864864865) internal successors, (69), 36 states have internal predecessors, (69), 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) [2022-12-14 11:19:45,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:19:45,059 INFO L93 Difference]: Finished difference Result 365 states and 455 transitions. [2022-12-14 11:19:45,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 11:19:45,059 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.864864864864865) internal successors, (69), 36 states have internal predecessors, (69), 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 26 [2022-12-14 11:19:45,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:19:45,061 INFO L225 Difference]: With dead ends: 365 [2022-12-14 11:19:45,062 INFO L226 Difference]: Without dead ends: 365 [2022-12-14 11:19:45,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1632 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=645, Invalid=3743, Unknown=34, NotChecked=0, Total=4422 [2022-12-14 11:19:45,064 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 493 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-14 11:19:45,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 924 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-14 11:19:45,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-12-14 11:19:45,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 163. [2022-12-14 11:19:45,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 135 states have (on average 1.5925925925925926) internal successors, (215), 162 states have internal predecessors, (215), 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) [2022-12-14 11:19:45,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 215 transitions. [2022-12-14 11:19:45,067 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 215 transitions. Word has length 26 [2022-12-14 11:19:45,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:19:45,067 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 215 transitions. [2022-12-14 11:19:45,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.864864864864865) internal successors, (69), 36 states have internal predecessors, (69), 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) [2022-12-14 11:19:45,067 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 215 transitions. [2022-12-14 11:19:45,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 11:19:45,067 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:45,067 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:19:45,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 11:19:45,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:19:45,268 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:19:45,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:45,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1001326369, now seen corresponding path program 1 times [2022-12-14 11:19:45,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:45,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864303907] [2022-12-14 11:19:45,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:45,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:45,643 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:45,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:45,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864303907] [2022-12-14 11:19:45,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864303907] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:19:45,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155369791] [2022-12-14 11:19:45,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:45,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:19:45,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:19:45,644 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:19:45,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 11:19:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:45,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 45 conjunts are in the unsatisfiable core [2022-12-14 11:19:45,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:19:45,893 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:19:45,894 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 [2022-12-14 11:19:45,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:45,935 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 21 treesize of output 20 [2022-12-14 11:19:45,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:45,944 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 [2022-12-14 11:19:46,050 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:19:46,051 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 42 treesize of output 41 [2022-12-14 11:19:46,058 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 29 treesize of output 29 [2022-12-14 11:19:46,118 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:19:46,119 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 42 treesize of output 41 [2022-12-14 11:19:46,125 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 29 treesize of output 29 [2022-12-14 11:19:46,206 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:46,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:19:46,220 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_532 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem22#1.base| v_ArrVal_532) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0)) (forall ((v_ArrVal_531 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem22#1.base| v_ArrVal_531) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0))) is different from false [2022-12-14 11:19:46,285 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (and (forall ((v_ArrVal_529 (Array Int Int)) (v_ArrVal_530 (Array Int Int)) (v_ArrVal_532 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem21#1.base| v_ArrVal_529) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem21#1.base| v_ArrVal_530) |c_ULTIMATE.start_main_~n~0#1.base|) .cse0) v_ArrVal_532) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0)) (forall ((v_ArrVal_531 (Array Int Int)) (v_ArrVal_530 (Array Int Int))) (= (select (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem21#1.base| v_ArrVal_530))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~n~0#1.base|) .cse0) v_ArrVal_531)) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0)))) is different from false [2022-12-14 11:19:46,296 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base|) .cse1))) (and (forall ((v_ArrVal_529 (Array Int Int)) (v_ArrVal_530 (Array Int Int)) (v_ArrVal_532 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_529) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_530) |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_532) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0)) (forall ((v_ArrVal_531 (Array Int Int)) (v_ArrVal_530 (Array Int Int))) (= (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_530))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_531)) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0))))) is different from false [2022-12-14 11:19:46,617 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:19:46,618 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 108 treesize of output 112 [2022-12-14 11:19:46,631 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:19:46,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 98 treesize of output 109 [2022-12-14 11:19:46,639 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 0 case distinctions, treesize of input 139 treesize of output 118 [2022-12-14 11:19:46,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 96 [2022-12-14 11:19:46,671 INFO L321 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2022-12-14 11:19:46,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 243 treesize of output 241 [2022-12-14 11:19:46,690 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 212 treesize of output 208 [2022-12-14 11:19:46,696 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 208 treesize of output 198 [2022-12-14 11:19:46,703 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 198 treesize of output 174 [2022-12-14 11:19:46,726 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-12-14 11:19:46,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 352 treesize of output 267 [2022-12-14 11:19:46,740 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:19:46,741 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 249 treesize of output 242 [2022-12-14 11:19:46,747 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 231 treesize of output 227 [2022-12-14 11:19:46,765 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:19:46,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 234 treesize of output 252 [2022-12-14 11:19:46,938 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:46,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155369791] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:19:46,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [787988185] [2022-12-14 11:19:46,941 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-12-14 11:19:46,941 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:19:46,941 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:19:46,941 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:19:46,941 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:19:46,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:46,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:46,963 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 [2022-12-14 11:19:46,975 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 [2022-12-14 11:19:46,980 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 [2022-12-14 11:19:46,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:46,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 30 treesize of output 21 [2022-12-14 11:19:46,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:46,998 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 21 treesize of output 20 [2022-12-14 11:19:47,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:47,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 34 treesize of output 21 [2022-12-14 11:19:47,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:47,013 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 21 treesize of output 20 [2022-12-14 11:19:47,170 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:19:47,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-12-14 11:19:47,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 11:19:47,182 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 19 treesize of output 1 [2022-12-14 11:19:47,185 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 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 11:19:47,191 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 13 [2022-12-14 11:19:47,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:47,206 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 104 [2022-12-14 11:19:47,211 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 88 [2022-12-14 11:19:47,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 1 [2022-12-14 11:19:47,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:47,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:47,241 INFO L321 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2022-12-14 11:19:47,242 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 220 treesize of output 141 [2022-12-14 11:19:47,255 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 11:19:47,255 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 128 [2022-12-14 11:19:47,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 1 [2022-12-14 11:19:47,428 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:19:47,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-12-14 11:19:47,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 11:19:47,440 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 19 treesize of output 1 [2022-12-14 11:19:47,444 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 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 11:19:47,450 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 13 [2022-12-14 11:19:47,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:47,463 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 104 [2022-12-14 11:19:47,468 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 88 [2022-12-14 11:19:47,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 1 [2022-12-14 11:19:47,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:47,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:19:47,505 INFO L321 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2022-12-14 11:19:47,505 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 220 treesize of output 141 [2022-12-14 11:19:47,526 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 11:19:47,527 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 128 [2022-12-14 11:19:47,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 1 [2022-12-14 11:19:47,908 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 11:19:47,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-14 11:19:47,924 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:19:47,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-12-14 11:19:47,935 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 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 11:19:47,939 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 19 treesize of output 1 [2022-12-14 11:19:47,944 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 13 [2022-12-14 11:19:47,952 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:19:49,484 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8032#(and (or (and (<= |ULTIMATE.start_main_~n~0#1.offset| 0) (= |ULTIMATE.start_main_~root~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) (and (= |ULTIMATE.start_main_~root~0#1.offset| 0) (exists ((|v_ULTIMATE.start_main_~n~0#1.base_134| Int) (|v_ULTIMATE.start_main_~n~0#1.offset_117| Int)) (and (= 1 (select |#valid| |v_ULTIMATE.start_main_~n~0#1.base_134|)) (<= 0 |v_ULTIMATE.start_main_~n~0#1.offset_117|) (= |ULTIMATE.start_main_~n~0#1.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_134|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_117| 4))) (<= (+ |v_ULTIMATE.start_main_~n~0#1.offset_117| 8) (select |#length| |v_ULTIMATE.start_main_~n~0#1.base_134|)) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~n~0#1.base_134|) (+ |v_ULTIMATE.start_main_~n~0#1.offset_117| 4)) |ULTIMATE.start_main_~n~0#1.offset|))) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) (not (= (select |#valid| |ULTIMATE.start_main_~n~0#1.base|) 1)))' at error location [2022-12-14 11:19:49,484 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:19:49,484 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:19:49,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 13] total 29 [2022-12-14 11:19:49,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107282340] [2022-12-14 11:19:49,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:19:49,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-14 11:19:49,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:19:49,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-14 11:19:49,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1585, Unknown=14, NotChecked=252, Total=2070 [2022-12-14 11:19:49,486 INFO L87 Difference]: Start difference. First operand 163 states and 215 transitions. Second operand has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 29 states have internal predecessors, (62), 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) [2022-12-14 11:19:55,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:19:55,718 INFO L93 Difference]: Finished difference Result 321 states and 400 transitions. [2022-12-14 11:19:55,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-14 11:19:55,719 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 29 states have internal predecessors, (62), 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 26 [2022-12-14 11:19:55,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:19:55,720 INFO L225 Difference]: With dead ends: 321 [2022-12-14 11:19:55,720 INFO L226 Difference]: Without dead ends: 321 [2022-12-14 11:19:55,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1058 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=498, Invalid=3039, Unknown=15, NotChecked=354, Total=3906 [2022-12-14 11:19:55,721 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 470 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 1473 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 2088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 573 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-14 11:19:55,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 668 Invalid, 2088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1473 Invalid, 0 Unknown, 573 Unchecked, 2.8s Time] [2022-12-14 11:19:55,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-12-14 11:19:55,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 185. [2022-12-14 11:19:55,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 157 states have (on average 1.5477707006369428) internal successors, (243), 184 states have internal predecessors, (243), 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) [2022-12-14 11:19:55,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 243 transitions. [2022-12-14 11:19:55,724 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 243 transitions. Word has length 26 [2022-12-14 11:19:55,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:19:55,724 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 243 transitions. [2022-12-14 11:19:55,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 29 states have internal predecessors, (62), 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) [2022-12-14 11:19:55,724 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 243 transitions. [2022-12-14 11:19:55,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 11:19:55,724 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:55,724 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:19:55,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 11:19:55,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-14 11:19:55,925 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:19:55,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:55,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1831783504, now seen corresponding path program 1 times [2022-12-14 11:19:55,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:55,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719194982] [2022-12-14 11:19:55,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:55,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:56,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:56,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:56,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719194982] [2022-12-14 11:19:56,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719194982] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:19:56,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722605183] [2022-12-14 11:19:56,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:56,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:19:56,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:19:56,321 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:19:56,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 11:19:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:56,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-14 11:19:56,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:19:56,573 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:19:56,573 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 [2022-12-14 11:19:56,631 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 [2022-12-14 11:19:56,770 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:19:56,770 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 28 treesize of output 29 [2022-12-14 11:19:56,862 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:19:56,862 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 28 treesize of output 29 [2022-12-14 11:19:57,076 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 25 treesize of output 13 [2022-12-14 11:19:57,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:19:57,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:19:57,168 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_605 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem16#1.base| v_ArrVal_605) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1)) is different from false [2022-12-14 11:19:57,179 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_605 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|) v_ArrVal_605) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1)) is different from false [2022-12-14 11:19:57,191 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_605 (Array Int Int)) (v_ArrVal_604 (Array Int Int))) (= (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem15#1.base| v_ArrVal_604))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|) v_ArrVal_605)) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1)) is different from false [2022-12-14 11:19:57,203 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_605 (Array Int Int)) (v_ArrVal_604 (Array Int Int))) (= (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|) v_ArrVal_604))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|) v_ArrVal_605)) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1)) is different from false [2022-12-14 11:19:57,212 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:19:57,212 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 38 treesize of output 31 [2022-12-14 11:19:57,227 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:19:57,228 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 144 treesize of output 131 [2022-12-14 11:19:57,244 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:19:57,245 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 116 treesize of output 114 [2022-12-14 11:19:57,251 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 106 treesize of output 102 [2022-12-14 11:20:00,360 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:20:00,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 54 treesize of output 124 [2022-12-14 11:20:00,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:20:00,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722605183] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:20:00,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [956979356] [2022-12-14 11:20:00,745 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-12-14 11:20:00,745 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:20:00,746 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:20:00,746 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:20:00,746 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:20:00,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:00,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:00,768 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 [2022-12-14 11:20:00,781 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 [2022-12-14 11:20:00,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:00,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 30 treesize of output 21 [2022-12-14 11:20:00,796 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 [2022-12-14 11:20:00,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:00,815 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 21 treesize of output 20 [2022-12-14 11:20:00,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:00,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 34 treesize of output 21 [2022-12-14 11:20:00,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:00,834 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 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 11:20:00,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:00,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:00,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:00,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:00,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:00,926 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 36 treesize of output 40 [2022-12-14 11:20:00,954 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2022-12-14 11:20:00,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:00,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2022-12-14 11:20:00,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:00,977 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 30 treesize of output 21 [2022-12-14 11:20:01,001 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:20:01,017 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:20:01,017 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 164 treesize of output 117 [2022-12-14 11:20:01,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:01,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 86 [2022-12-14 11:20:01,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:01,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 50 treesize of output 21 [2022-12-14 11:20:01,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:01,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:01,081 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:20:01,082 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:20:01,101 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-12-14 11:20:01,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 202 treesize of output 150 [2022-12-14 11:20:01,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:01,138 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-12-14 11:20:01,138 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 5 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 122 [2022-12-14 11:20:01,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:01,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 42 treesize of output 21 [2022-12-14 11:20:01,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:01,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:01,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:01,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:01,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:01,285 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 36 treesize of output 40 [2022-12-14 11:20:01,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:01,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2022-12-14 11:20:01,320 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2022-12-14 11:20:01,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:01,331 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 30 treesize of output 21 [2022-12-14 11:20:01,359 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:20:01,379 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:20:01,379 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 164 treesize of output 117 [2022-12-14 11:20:01,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:01,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 86 [2022-12-14 11:20:01,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:01,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 50 treesize of output 21 [2022-12-14 11:20:01,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:01,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:01,442 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:20:01,442 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:20:01,457 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-12-14 11:20:01,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 202 treesize of output 150 [2022-12-14 11:20:01,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:01,488 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-12-14 11:20:01,488 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 5 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 122 [2022-12-14 11:20:01,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:01,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 42 treesize of output 21 [2022-12-14 11:20:01,931 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:20:09,750 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8783#(and (= |ULTIMATE.start_main_~root~0#1.offset| 0) (not (= (select |#valid| |ULTIMATE.start_main_~n~0#1.base|) 1)) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~pred~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~pred~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 11:20:09,750 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:20:09,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:20:09,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 28 [2022-12-14 11:20:09,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071945884] [2022-12-14 11:20:09,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:20:09,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-14 11:20:09,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:20:09,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-14 11:20:09,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=1837, Unknown=4, NotChecked=380, Total=2652 [2022-12-14 11:20:09,753 INFO L87 Difference]: Start difference. First operand 185 states and 243 transitions. Second operand has 29 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 29 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) [2022-12-14 11:20:11,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:20:11,838 INFO L93 Difference]: Finished difference Result 356 states and 449 transitions. [2022-12-14 11:20:11,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-14 11:20:11,838 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 29 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) Word has length 28 [2022-12-14 11:20:11,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:20:11,839 INFO L225 Difference]: With dead ends: 356 [2022-12-14 11:20:11,839 INFO L226 Difference]: Without dead ends: 356 [2022-12-14 11:20:11,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1281 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=695, Invalid=2739, Unknown=4, NotChecked=468, Total=3906 [2022-12-14 11:20:11,840 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 633 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 2086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 799 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 11:20:11,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 466 Invalid, 2086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1241 Invalid, 0 Unknown, 799 Unchecked, 1.5s Time] [2022-12-14 11:20:11,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-12-14 11:20:11,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 229. [2022-12-14 11:20:11,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 201 states have (on average 1.5522388059701493) internal successors, (312), 228 states have internal predecessors, (312), 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) [2022-12-14 11:20:11,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 312 transitions. [2022-12-14 11:20:11,844 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 312 transitions. Word has length 28 [2022-12-14 11:20:11,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:20:11,844 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 312 transitions. [2022-12-14 11:20:11,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 29 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) [2022-12-14 11:20:11,844 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 312 transitions. [2022-12-14 11:20:11,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 11:20:11,845 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:20:11,845 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:20:11,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 11:20:12,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-14 11:20:12,047 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:20:12,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:20:12,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1831783503, now seen corresponding path program 1 times [2022-12-14 11:20:12,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:20:12,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104497250] [2022-12-14 11:20:12,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:20:12,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:20:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:20:12,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:20:12,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:20:12,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104497250] [2022-12-14 11:20:12,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104497250] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:20:12,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629147630] [2022-12-14 11:20:12,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:20:12,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:20:12,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:20:12,667 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:20:12,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 11:20:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:20:12,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 43 conjunts are in the unsatisfiable core [2022-12-14 11:20:12,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:20:12,900 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:20:12,900 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 [2022-12-14 11:20:12,947 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 [2022-12-14 11:20:12,955 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 [2022-12-14 11:20:13,084 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:20:13,084 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 29 treesize of output 30 [2022-12-14 11:20:13,091 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 [2022-12-14 11:20:13,181 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:20:13,181 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 44 treesize of output 43 [2022-12-14 11:20:13,189 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 33 treesize of output 33 [2022-12-14 11:20:13,435 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 31 treesize of output 19 [2022-12-14 11:20:13,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-12-14 11:20:13,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:20:13,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:20:13,652 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:20:13,652 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 41 treesize of output 45 [2022-12-14 11:20:13,689 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_681 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem16#1.base| v_ArrVal_681) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|))) (forall ((v_prenex_8 (Array Int Int))) (< (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem16#1.base| v_prenex_8) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) (+ 5 |c_ULTIMATE.start_main_#t~mem16#1.offset|))) (forall ((v_ArrVal_680 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~mem16#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem16#1.base| v_ArrVal_680) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)))) is different from false [2022-12-14 11:20:13,850 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_678 (Array Int Int)) (v_prenex_8 (Array Int Int)) (v_ArrVal_679 (Array Int Int))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem15#1.base| v_ArrVal_679))) (< (select (select (store .cse0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem15#1.base| v_ArrVal_678) |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|) v_prenex_8) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) (+ (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|) 5)))) (forall ((v_ArrVal_678 (Array Int Int)) (v_ArrVal_679 (Array Int Int)) (v_ArrVal_681 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem15#1.base| v_ArrVal_679) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem15#1.base| v_ArrVal_678) |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|) v_ArrVal_681) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|))) (forall ((v_ArrVal_678 (Array Int Int)) (v_ArrVal_680 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem15#1.base| v_ArrVal_678))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|))) (= (select (select (store .cse1 .cse2 v_ArrVal_680) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) .cse2))))) is different from false [2022-12-14 11:20:13,879 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|))) (and (forall ((v_ArrVal_678 (Array Int Int)) (v_prenex_8 (Array Int Int)) (v_ArrVal_679 (Array Int Int))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_679))) (< (select (select (store .cse0 (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_678) |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|) v_prenex_8) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) (+ 5 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|))))) (forall ((v_ArrVal_678 (Array Int Int)) (v_ArrVal_680 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_678))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|))) (= (select (select (store .cse2 .cse3 v_ArrVal_680) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) .cse3)))) (forall ((v_ArrVal_678 (Array Int Int)) (v_ArrVal_679 (Array Int Int)) (v_ArrVal_681 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_679) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_678) |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|) v_ArrVal_681) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|))))) is different from false [2022-12-14 11:20:13,892 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:20:13,893 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 36 treesize of output 37 [2022-12-14 11:20:13,899 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:20:13,900 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 28 treesize of output 29 [2022-12-14 11:20:13,904 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 50 treesize of output 42 [2022-12-14 11:20:13,919 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:20:13,919 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 166 treesize of output 161 [2022-12-14 11:20:13,927 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 146 treesize of output 136 [2022-12-14 11:20:13,934 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 114 treesize of output 110 [2022-12-14 11:20:13,939 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 110 treesize of output 98 [2022-12-14 11:20:14,043 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:20:14,043 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 1 case distinctions, treesize of input 51 treesize of output 1 [2022-12-14 11:20:14,050 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:20:14,050 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 1 case distinctions, treesize of input 53 treesize of output 1 [2022-12-14 11:20:14,256 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:20:14,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 46 [2022-12-14 11:20:14,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:20:14,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629147630] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:20:14,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1211408278] [2022-12-14 11:20:14,326 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-12-14 11:20:14,326 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:20:14,326 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:20:14,326 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:20:14,327 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:20:14,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,346 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 [2022-12-14 11:20:14,358 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 [2022-12-14 11:20:14,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 30 treesize of output 21 [2022-12-14 11:20:14,376 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 [2022-12-14 11:20:14,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,394 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 21 treesize of output 20 [2022-12-14 11:20:14,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 34 treesize of output 21 [2022-12-14 11:20:14,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,418 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 21 treesize of output 20 [2022-12-14 11:20:14,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,505 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 36 treesize of output 40 [2022-12-14 11:20:14,524 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2022-12-14 11:20:14,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,537 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 30 treesize of output 21 [2022-12-14 11:20:14,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2022-12-14 11:20:14,568 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:20:14,587 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:20:14,588 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 164 treesize of output 117 [2022-12-14 11:20:14,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 86 [2022-12-14 11:20:14,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 42 treesize of output 21 [2022-12-14 11:20:14,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,645 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:20:14,646 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:20:14,670 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-12-14 11:20:14,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 194 treesize of output 142 [2022-12-14 11:20:14,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,707 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-12-14 11:20:14,707 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 108 [2022-12-14 11:20:14,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 54 treesize of output 21 [2022-12-14 11:20:14,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,858 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 36 treesize of output 40 [2022-12-14 11:20:14,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,880 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2022-12-14 11:20:14,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2022-12-14 11:20:14,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,904 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 30 treesize of output 21 [2022-12-14 11:20:14,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:20:14,949 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:20:14,950 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 164 treesize of output 117 [2022-12-14 11:20:14,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 86 [2022-12-14 11:20:14,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:14,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 42 treesize of output 21 [2022-12-14 11:20:15,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:15,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:15,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:20:15,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:20:15,025 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-12-14 11:20:15,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 194 treesize of output 142 [2022-12-14 11:20:15,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:15,056 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-12-14 11:20:15,056 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 108 [2022-12-14 11:20:15,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:15,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 54 treesize of output 21 [2022-12-14 11:20:15,529 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:20:23,442 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9614#(and (= |ULTIMATE.start_main_~root~0#1.offset| 0) (or (not (<= (+ |ULTIMATE.start_main_~n~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~n~0#1.base|))) (not (<= 0 |ULTIMATE.start_main_~n~0#1.offset|))) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~pred~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~pred~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 11:20:23,442 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:20:23,442 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:20:23,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 30 [2022-12-14 11:20:23,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528644379] [2022-12-14 11:20:23,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:20:23,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-14 11:20:23,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:20:23,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-14 11:20:23,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=2107, Unknown=11, NotChecked=300, Total=2862 [2022-12-14 11:20:23,444 INFO L87 Difference]: Start difference. First operand 229 states and 312 transitions. Second operand has 31 states, 30 states have (on average 2.7333333333333334) internal successors, (82), 31 states have internal predecessors, (82), 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) [2022-12-14 11:20:28,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:20:28,039 INFO L93 Difference]: Finished difference Result 407 states and 502 transitions. [2022-12-14 11:20:28,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-14 11:20:28,040 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.7333333333333334) internal successors, (82), 31 states have internal predecessors, (82), 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 28 [2022-12-14 11:20:28,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:20:28,043 INFO L225 Difference]: With dead ends: 407 [2022-12-14 11:20:28,043 INFO L226 Difference]: Without dead ends: 407 [2022-12-14 11:20:28,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1668 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=1033, Invalid=4224, Unknown=11, NotChecked=432, Total=5700 [2022-12-14 11:20:28,046 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 937 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 111 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 2297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 557 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 11:20:28,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 611 Invalid, 2297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1625 Invalid, 4 Unknown, 557 Unchecked, 2.4s Time] [2022-12-14 11:20:28,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-12-14 11:20:28,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 246. [2022-12-14 11:20:28,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 224 states have (on average 1.4955357142857142) internal successors, (335), 245 states have internal predecessors, (335), 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) [2022-12-14 11:20:28,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 335 transitions. [2022-12-14 11:20:28,050 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 335 transitions. Word has length 28 [2022-12-14 11:20:28,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:20:28,051 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 335 transitions. [2022-12-14 11:20:28,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.7333333333333334) internal successors, (82), 31 states have internal predecessors, (82), 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) [2022-12-14 11:20:28,051 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 335 transitions. [2022-12-14 11:20:28,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 11:20:28,051 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:20:28,051 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:20:28,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 11:20:28,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:20:28,253 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:20:28,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:20:28,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1831777552, now seen corresponding path program 1 times [2022-12-14 11:20:28,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:20:28,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66764729] [2022-12-14 11:20:28,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:20:28,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:20:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:20:28,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 11:20:28,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:20:28,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66764729] [2022-12-14 11:20:28,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66764729] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:20:28,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:20:28,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 11:20:28,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733499241] [2022-12-14 11:20:28,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:20:28,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:20:28,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:20:28,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:20:28,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:20:28,392 INFO L87 Difference]: Start difference. First operand 246 states and 335 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:20:28,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:20:28,574 INFO L93 Difference]: Finished difference Result 246 states and 331 transitions. [2022-12-14 11:20:28,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:20:28,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-12-14 11:20:28,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:20:28,575 INFO L225 Difference]: With dead ends: 246 [2022-12-14 11:20:28,576 INFO L226 Difference]: Without dead ends: 246 [2022-12-14 11:20:28,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:20:28,576 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 6 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:20:28,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 129 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:20:28,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-12-14 11:20:28,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 243. [2022-12-14 11:20:28,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 221 states have (on average 1.4841628959276019) internal successors, (328), 242 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:20:28,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 328 transitions. [2022-12-14 11:20:28,579 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 328 transitions. Word has length 28 [2022-12-14 11:20:28,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:20:28,580 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 328 transitions. [2022-12-14 11:20:28,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:20:28,580 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 328 transitions. [2022-12-14 11:20:28,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 11:20:28,580 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:20:28,580 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:20:28,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-14 11:20:28,580 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:20:28,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:20:28,581 INFO L85 PathProgramCache]: Analyzing trace with hash -69135879, now seen corresponding path program 1 times [2022-12-14 11:20:28,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:20:28,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482398155] [2022-12-14 11:20:28,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:20:28,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:20:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:20:29,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:20:29,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:20:29,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482398155] [2022-12-14 11:20:29,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482398155] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:20:29,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558657509] [2022-12-14 11:20:29,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:20:29,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:20:29,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:20:29,096 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:20:29,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 11:20:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:20:29,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-14 11:20:29,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:20:29,511 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:20:29,512 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 [2022-12-14 11:20:29,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:29,586 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 21 treesize of output 20 [2022-12-14 11:20:29,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:29,604 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 [2022-12-14 11:20:29,783 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:20:29,783 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 53 treesize of output 50 [2022-12-14 11:20:29,793 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 20 treesize of output 22 [2022-12-14 11:20:29,913 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:20:29,913 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 53 treesize of output 50 [2022-12-14 11:20:29,926 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 20 treesize of output 22 [2022-12-14 11:20:30,132 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 7 treesize of output 3 [2022-12-14 11:20:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:20:30,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:20:30,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558657509] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:20:30,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 11:20:30,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 22 [2022-12-14 11:20:30,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850481011] [2022-12-14 11:20:30,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:20:30,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 11:20:30,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:20:30,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 11:20:30,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2022-12-14 11:20:30,195 INFO L87 Difference]: Start difference. First operand 243 states and 328 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 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) [2022-12-14 11:20:31,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:20:31,415 INFO L93 Difference]: Finished difference Result 332 states and 426 transitions. [2022-12-14 11:20:31,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 11:20:31,415 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 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 28 [2022-12-14 11:20:31,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:20:31,416 INFO L225 Difference]: With dead ends: 332 [2022-12-14 11:20:31,416 INFO L226 Difference]: Without dead ends: 332 [2022-12-14 11:20:31,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2022-12-14 11:20:31,417 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 171 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 11:20:31,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 305 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 11:20:31,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-12-14 11:20:31,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 256. [2022-12-14 11:20:31,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 234 states have (on average 1.4700854700854702) internal successors, (344), 255 states have internal predecessors, (344), 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) [2022-12-14 11:20:31,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 344 transitions. [2022-12-14 11:20:31,420 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 344 transitions. Word has length 28 [2022-12-14 11:20:31,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:20:31,421 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 344 transitions. [2022-12-14 11:20:31,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 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) [2022-12-14 11:20:31,421 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 344 transitions. [2022-12-14 11:20:31,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 11:20:31,421 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:20:31,421 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:20:31,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-14 11:20:31,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-14 11:20:31,623 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:20:31,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:20:31,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1525008258, now seen corresponding path program 1 times [2022-12-14 11:20:31,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:20:31,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587073152] [2022-12-14 11:20:31,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:20:31,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:20:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:20:32,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:20:32,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:20:32,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587073152] [2022-12-14 11:20:32,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587073152] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:20:32,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628252825] [2022-12-14 11:20:32,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:20:32,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:20:32,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:20:32,033 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:20:32,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 11:20:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:20:32,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-14 11:20:32,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:20:32,156 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 11:20:32,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-12-14 11:20:32,452 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-12-14 11:20:32,452 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 3 case distinctions, treesize of input 26 treesize of output 33 [2022-12-14 11:20:32,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 11:20:32,740 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:20:32,740 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 27 treesize of output 28 [2022-12-14 11:20:32,874 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:20:32,875 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 36 treesize of output 35 [2022-12-14 11:20:32,896 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:20:32,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2022-12-14 11:20:33,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:20:33,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:20:33,435 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:20:33,436 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 59 treesize of output 43 [2022-12-14 11:20:33,452 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:20:33,452 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 273 treesize of output 244 [2022-12-14 11:20:33,470 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:20:33,470 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 229 treesize of output 219 [2022-12-14 11:20:33,478 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 188 treesize of output 180 [2022-12-14 11:20:34,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:20:34,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628252825] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 11:20:34,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:20:34,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12, 11] total 30 [2022-12-14 11:20:34,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791657941] [2022-12-14 11:20:34,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:20:34,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 11:20:34,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:20:34,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 11:20:34,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=711, Unknown=6, NotChecked=0, Total=870 [2022-12-14 11:20:34,345 INFO L87 Difference]: Start difference. First operand 256 states and 344 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 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) [2022-12-14 11:20:37,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:20:37,565 INFO L93 Difference]: Finished difference Result 355 states and 448 transitions. [2022-12-14 11:20:37,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 11:20:37,565 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 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 29 [2022-12-14 11:20:37,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:20:37,567 INFO L225 Difference]: With dead ends: 355 [2022-12-14 11:20:37,567 INFO L226 Difference]: Without dead ends: 353 [2022-12-14 11:20:37,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=312, Invalid=1662, Unknown=6, NotChecked=0, Total=1980 [2022-12-14 11:20:37,568 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 148 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 19 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 11:20:37,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 490 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 949 Invalid, 5 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 11:20:37,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-12-14 11:20:37,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 258. [2022-12-14 11:20:37,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 236 states have (on average 1.4661016949152543) internal successors, (346), 257 states have internal predecessors, (346), 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) [2022-12-14 11:20:37,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 346 transitions. [2022-12-14 11:20:37,572 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 346 transitions. Word has length 29 [2022-12-14 11:20:37,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:20:37,572 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 346 transitions. [2022-12-14 11:20:37,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 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) [2022-12-14 11:20:37,572 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 346 transitions. [2022-12-14 11:20:37,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 11:20:37,572 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:20:37,572 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:20:37,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-14 11:20:37,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-14 11:20:37,774 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:20:37,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:20:37,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1577460565, now seen corresponding path program 1 times [2022-12-14 11:20:37,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:20:37,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463875149] [2022-12-14 11:20:37,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:20:37,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:20:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:20:38,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:20:38,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:20:38,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463875149] [2022-12-14 11:20:38,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463875149] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:20:38,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994569754] [2022-12-14 11:20:38,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:20:38,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:20:38,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:20:38,804 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:20:38,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 11:20:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:20:38,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-14 11:20:38,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:20:39,158 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:20:39,159 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 [2022-12-14 11:20:39,257 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 [2022-12-14 11:20:39,456 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:20:39,456 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 [2022-12-14 11:20:39,594 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:20:39,594 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 [2022-12-14 11:20:40,058 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:20:40,059 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 [2022-12-14 11:20:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:20:40,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:20:42,854 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:20:42,854 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 46 treesize of output 37 [2022-12-14 11:20:42,869 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:20:42,869 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 170 treesize of output 145 [2022-12-14 11:20:42,885 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:20:42,886 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 130 treesize of output 118 [2022-12-14 11:20:42,893 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 110 treesize of output 102 [2022-12-14 11:20:46,546 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:20:46,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 94 treesize of output 248 [2022-12-14 11:20:49,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:20:49,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994569754] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:20:49,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [668685235] [2022-12-14 11:20:49,862 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-12-14 11:20:49,862 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:20:49,862 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:20:49,862 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:20:49,863 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:20:49,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:49,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:49,884 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 [2022-12-14 11:20:49,897 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 [2022-12-14 11:20:49,902 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 [2022-12-14 11:20:49,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:49,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 30 treesize of output 21 [2022-12-14 11:20:49,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:49,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 34 treesize of output 21 [2022-12-14 11:20:49,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:49,933 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 21 treesize of output 20 [2022-12-14 11:20:49,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:49,943 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 21 treesize of output 20 [2022-12-14 11:20:50,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:50,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:50,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:50,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:50,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:50,043 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 36 treesize of output 40 [2022-12-14 11:20:50,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:50,061 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 34 treesize of output 21 [2022-12-14 11:20:50,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:50,072 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:20:50,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 23 [2022-12-14 11:20:50,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:50,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:20:50,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 23 [2022-12-14 11:20:50,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:50,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:20:50,126 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:20:50,126 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 1 case distinctions, treesize of input 200 treesize of output 127 [2022-12-14 11:20:50,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:50,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:50,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 98 [2022-12-14 11:20:50,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:50,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 60 treesize of output 21 [2022-12-14 11:20:50,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:50,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:50,203 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:20:50,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:50,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:20:50,221 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-12-14 11:20:50,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 246 treesize of output 164 [2022-12-14 11:20:50,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:50,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:50,254 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 11:20:50,255 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 5 new quantified variables, introduced 1 case distinctions, treesize of input 175 treesize of output 138 [2022-12-14 11:20:50,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:50,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 48 treesize of output 21 [2022-12-14 11:20:50,398 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:20:50,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:50,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:50,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:50,431 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:20:50,431 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:20:50,447 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-12-14 11:20:50,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 246 treesize of output 164 [2022-12-14 11:20:50,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:50,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:50,480 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 11:20:50,481 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 5 new quantified variables, introduced 1 case distinctions, treesize of input 175 treesize of output 138 [2022-12-14 11:20:50,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:50,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 48 treesize of output 21 [2022-12-14 11:20:51,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:51,177 INFO L321 Elim1Store]: treesize reduction 54, result has 44.9 percent of original size [2022-12-14 11:20:51,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 164 treesize of output 201 [2022-12-14 11:20:51,402 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:20:51,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-12-14 11:20:51,423 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:20:51,443 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:20:51,486 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-12-14 11:20:51,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 1 [2022-12-14 11:20:51,549 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:20:51,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-12-14 11:20:51,625 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:20:51,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:51,627 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:20:51,674 INFO L321 Elim1Store]: treesize reduction 22, result has 50.0 percent of original size [2022-12-14 11:20:51,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 599 treesize of output 582 [2022-12-14 11:20:51,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:20:51,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:20:51,732 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-12-14 11:20:51,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 701 treesize of output 672 [2022-12-14 11:20:51,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:51,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:20:51,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 698 treesize of output 669 [2022-12-14 11:20:51,897 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:20:59,802 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12592#(and (= |ULTIMATE.start_main_~root~0#1.offset| 0) (not (= (select |#valid| |ULTIMATE.start_main_~n~0#1.base|) 1)) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~pred~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~pred~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 11:20:59,803 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:20:59,803 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:20:59,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 12] total 36 [2022-12-14 11:20:59,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185448512] [2022-12-14 11:20:59,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:20:59,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-14 11:20:59,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:20:59,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-14 11:20:59,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=3053, Unknown=29, NotChecked=0, Total=3540 [2022-12-14 11:20:59,805 INFO L87 Difference]: Start difference. First operand 258 states and 346 transitions. Second operand has 38 states, 37 states have (on average 2.2162162162162162) internal successors, (82), 37 states have internal predecessors, (82), 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) [2022-12-14 11:21:08,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:21:08,833 INFO L93 Difference]: Finished difference Result 704 states and 899 transitions. [2022-12-14 11:21:08,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-14 11:21:08,834 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.2162162162162162) internal successors, (82), 37 states have internal predecessors, (82), 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 29 [2022-12-14 11:21:08,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:21:08,835 INFO L225 Difference]: With dead ends: 704 [2022-12-14 11:21:08,835 INFO L226 Difference]: Without dead ends: 704 [2022-12-14 11:21:08,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3130 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=1394, Invalid=7694, Unknown=32, NotChecked=0, Total=9120 [2022-12-14 11:21:08,837 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 1502 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 2803 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 3056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 2803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-12-14 11:21:08,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1058 Invalid, 3056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 2803 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-12-14 11:21:08,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-12-14 11:21:08,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 353. [2022-12-14 11:21:08,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 331 states have (on average 1.4924471299093656) internal successors, (494), 352 states have internal predecessors, (494), 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) [2022-12-14 11:21:08,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 494 transitions. [2022-12-14 11:21:08,843 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 494 transitions. Word has length 29 [2022-12-14 11:21:08,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:21:08,843 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 494 transitions. [2022-12-14 11:21:08,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.2162162162162162) internal successors, (82), 37 states have internal predecessors, (82), 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) [2022-12-14 11:21:08,843 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 494 transitions. [2022-12-14 11:21:08,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 11:21:08,843 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:21:08,844 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:21:08,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 11:21:09,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-14 11:21:09,045 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:21:09,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:21:09,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1577460566, now seen corresponding path program 1 times [2022-12-14 11:21:09,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:21:09,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243829592] [2022-12-14 11:21:09,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:21:09,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:21:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:21:09,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:21:09,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:21:09,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243829592] [2022-12-14 11:21:09,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243829592] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:21:09,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567665192] [2022-12-14 11:21:09,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:21:09,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:21:09,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:21:09,919 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:21:09,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 11:21:10,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:21:10,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-14 11:21:10,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:21:10,232 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 [2022-12-14 11:21:10,254 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:21:10,254 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 [2022-12-14 11:21:10,326 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 [2022-12-14 11:21:10,342 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 [2022-12-14 11:21:10,555 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:21:10,556 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 46 treesize of output 45 [2022-12-14 11:21:10,565 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 22 treesize of output 24 [2022-12-14 11:21:10,705 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:21:10,706 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 46 treesize of output 45 [2022-12-14 11:21:10,713 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 22 treesize of output 24 [2022-12-14 11:21:11,098 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:21:11,098 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 29 treesize of output 13 [2022-12-14 11:21:11,106 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:21:11,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 11:21:11,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:21:11,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:21:11,492 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base|) (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (.cse1 (+ |c_ULTIMATE.start_main_~root~0#1.offset| 4))) (and (forall ((v_ArrVal_1016 (Array Int Int)) (v_ArrVal_1015 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1016) |c_ULTIMATE.start_main_~root~0#1.base|) .cse1) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1015) |c_ULTIMATE.start_main_~root~0#1.base|) .cse1)))) (forall ((v_ArrVal_1016 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1016) |c_ULTIMATE.start_main_~root~0#1.base|) .cse1))))) is different from false [2022-12-14 11:21:11,511 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4)) (.cse1 (+ |c_ULTIMATE.start_main_~root~0#1.offset| 4))) (and (forall ((v_ArrVal_1016 (Array Int Int)) (v_ArrVal_1015 (Array Int Int)) (v_ArrVal_1014 (Array Int Int)) (v_ArrVal_1013 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem21#1.base| v_ArrVal_1014))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~n~0#1.base|) .cse3))) (<= (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem21#1.base| v_ArrVal_1013) .cse0 v_ArrVal_1016) |c_ULTIMATE.start_main_~root~0#1.base|) .cse1) 4) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_1015) |c_ULTIMATE.start_main_~root~0#1.base|) .cse1)))))) (forall ((v_ArrVal_1016 (Array Int Int)) (v_ArrVal_1014 (Array Int Int)) (v_ArrVal_1013 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem21#1.base| v_ArrVal_1013) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem21#1.base| v_ArrVal_1014) |c_ULTIMATE.start_main_~n~0#1.base|) .cse3) v_ArrVal_1016) |c_ULTIMATE.start_main_~root~0#1.base|) .cse1))))) is different from false [2022-12-14 11:21:11,530 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base|) .cse4)) (.cse2 (+ |c_ULTIMATE.start_main_~root~0#1.offset| 4))) (and (forall ((v_ArrVal_1016 (Array Int Int)) (v_ArrVal_1015 (Array Int Int)) (v_ArrVal_1014 (Array Int Int)) (v_ArrVal_1013 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1014))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~n~0#1.base|) .cse4))) (<= (+ (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1013) .cse1 v_ArrVal_1016) |c_ULTIMATE.start_main_~root~0#1.base|) .cse2) 4) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_1015) |c_ULTIMATE.start_main_~root~0#1.base|) .cse2)))))) (forall ((v_ArrVal_1016 (Array Int Int)) (v_ArrVal_1014 (Array Int Int)) (v_ArrVal_1013 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1013) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1014) |c_ULTIMATE.start_main_~n~0#1.base|) .cse4) v_ArrVal_1016) |c_ULTIMATE.start_main_~root~0#1.base|) .cse2)))))) is different from false [2022-12-14 11:21:11,543 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:21:11,544 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 89 treesize of output 90 [2022-12-14 11:21:11,552 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:21:11,553 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 79 treesize of output 60 [2022-12-14 11:21:11,570 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:21:11,571 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 400 treesize of output 345 [2022-12-14 11:21:11,601 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:21:11,601 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 1148 treesize of output 1081 [2022-12-14 11:21:11,619 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 1066 treesize of output 986 [2022-12-14 11:21:11,629 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 986 treesize of output 954 [2022-12-14 11:21:11,639 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 954 treesize of output 874 [2022-12-14 11:21:11,660 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:21:11,660 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 874 treesize of output 730 [2022-12-14 11:21:14,291 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:21:14,291 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 44 treesize of output 45 [2022-12-14 11:21:14,302 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:21:14,302 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 1 case distinctions, treesize of input 34 treesize of output 35 [2022-12-14 11:21:14,306 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:21:14,309 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 32 treesize of output 20 [2022-12-14 11:21:14,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:21:14,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:14,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-12-14 11:21:14,625 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:21:14,625 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 34 treesize of output 74 [2022-12-14 11:21:14,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:21:14,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567665192] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:21:14,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [660081890] [2022-12-14 11:21:14,819 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-12-14 11:21:14,819 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:21:14,820 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:21:14,820 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:21:14,820 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:21:14,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:14,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:14,842 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 [2022-12-14 11:21:14,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:14,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 30 treesize of output 21 [2022-12-14 11:21:14,864 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 [2022-12-14 11:21:14,870 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 [2022-12-14 11:21:14,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:14,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 34 treesize of output 21 [2022-12-14 11:21:14,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:14,895 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 21 treesize of output 20 [2022-12-14 11:21:14,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:14,903 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 21 treesize of output 20 [2022-12-14 11:21:15,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:15,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:15,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:15,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:15,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:15,031 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 36 treesize of output 40 [2022-12-14 11:21:15,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:15,060 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 34 treesize of output 21 [2022-12-14 11:21:15,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:15,068 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:21:15,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 23 [2022-12-14 11:21:15,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:15,080 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:21:15,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 23 [2022-12-14 11:21:15,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:15,104 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:21:15,118 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:21:15,119 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 1 case distinctions, treesize of input 200 treesize of output 127 [2022-12-14 11:21:15,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:15,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:15,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 98 [2022-12-14 11:21:15,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:15,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 48 treesize of output 21 [2022-12-14 11:21:15,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:15,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:15,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:15,183 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:21:15,183 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:21:15,197 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-12-14 11:21:15,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 234 treesize of output 152 [2022-12-14 11:21:15,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:15,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:15,225 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 11:21:15,226 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 122 [2022-12-14 11:21:15,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:15,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 64 treesize of output 21 [2022-12-14 11:21:15,352 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:21:15,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:15,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:15,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:15,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:21:15,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:21:15,399 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-12-14 11:21:15,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 234 treesize of output 152 [2022-12-14 11:21:15,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:15,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:15,431 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 11:21:15,431 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 122 [2022-12-14 11:21:15,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:15,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 48 treesize of output 21 [2022-12-14 11:21:16,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:16,121 INFO L321 Elim1Store]: treesize reduction 54, result has 44.9 percent of original size [2022-12-14 11:21:16,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 164 treesize of output 201 [2022-12-14 11:21:16,343 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:21:16,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-12-14 11:21:16,376 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-12-14 11:21:16,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 1 [2022-12-14 11:21:16,415 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-12-14 11:21:16,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 1 [2022-12-14 11:21:16,468 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-12-14 11:21:16,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 1 [2022-12-14 11:21:16,496 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-12-14 11:21:16,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 1 [2022-12-14 11:21:16,547 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:21:16,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-12-14 11:21:16,600 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:21:16,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-12-14 11:21:16,691 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:21:16,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:16,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:21:16,742 INFO L321 Elim1Store]: treesize reduction 22, result has 50.0 percent of original size [2022-12-14 11:21:16,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 633 treesize of output 616 [2022-12-14 11:21:16,768 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:21:16,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:21:16,790 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-12-14 11:21:16,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 759 treesize of output 730 [2022-12-14 11:21:16,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:16,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:16,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 756 treesize of output 727 [2022-12-14 11:21:17,000 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:21:24,520 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13945#(and (= |ULTIMATE.start_main_~root~0#1.offset| 0) (or (not (<= (+ |ULTIMATE.start_main_~n~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~n~0#1.base|))) (not (<= 0 |ULTIMATE.start_main_~n~0#1.offset|))) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~pred~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~pred~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 11:21:24,520 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:21:24,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:21:24,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 11] total 33 [2022-12-14 11:21:24,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053968801] [2022-12-14 11:21:24,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:21:24,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-14 11:21:24,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:21:24,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-14 11:21:24,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=2377, Unknown=11, NotChecked=312, Total=3080 [2022-12-14 11:21:24,523 INFO L87 Difference]: Start difference. First operand 353 states and 494 transitions. Second operand has 34 states, 33 states have (on average 2.606060606060606) internal successors, (86), 34 states have internal predecessors, (86), 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) [2022-12-14 11:21:49,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:21:49,953 INFO L93 Difference]: Finished difference Result 822 states and 1040 transitions. [2022-12-14 11:21:49,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-14 11:21:49,954 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.606060606060606) internal successors, (86), 34 states have internal predecessors, (86), 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 29 [2022-12-14 11:21:49,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:21:49,956 INFO L225 Difference]: With dead ends: 822 [2022-12-14 11:21:49,956 INFO L226 Difference]: Without dead ends: 822 [2022-12-14 11:21:49,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 3154 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=1565, Invalid=7740, Unknown=19, NotChecked=576, Total=9900 [2022-12-14 11:21:49,958 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 1598 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 2113 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1598 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 3599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 2113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1210 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:21:49,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1598 Valid, 596 Invalid, 3599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 2113 Invalid, 0 Unknown, 1210 Unchecked, 6.2s Time] [2022-12-14 11:21:49,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-12-14 11:21:49,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 503. [2022-12-14 11:21:49,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 481 states have (on average 1.501039501039501) internal successors, (722), 502 states have internal predecessors, (722), 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) [2022-12-14 11:21:49,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 722 transitions. [2022-12-14 11:21:49,970 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 722 transitions. Word has length 29 [2022-12-14 11:21:49,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:21:49,971 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 722 transitions. [2022-12-14 11:21:49,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.606060606060606) internal successors, (86), 34 states have internal predecessors, (86), 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) [2022-12-14 11:21:49,971 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 722 transitions. [2022-12-14 11:21:49,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-14 11:21:49,971 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:21:49,972 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:21:49,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 11:21:50,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:21:50,173 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:21:50,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:21:50,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1029363530, now seen corresponding path program 1 times [2022-12-14 11:21:50,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:21:50,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043969362] [2022-12-14 11:21:50,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:21:50,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:21:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:21:51,462 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:21:51,463 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:21:51,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043969362] [2022-12-14 11:21:51,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043969362] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:21:51,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805757209] [2022-12-14 11:21:51,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:21:51,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:21:51,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:21:51,465 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:21:51,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 11:21:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:21:51,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-14 11:21:51,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:21:51,953 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:21:51,954 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 [2022-12-14 11:21:52,076 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 [2022-12-14 11:21:52,395 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:21:52,395 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 19 treesize of output 22 [2022-12-14 11:21:52,593 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:21:52,593 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 28 treesize of output 29 [2022-12-14 11:21:52,879 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-12-14 11:21:52,879 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 4 case distinctions, treesize of input 26 treesize of output 41 [2022-12-14 11:21:53,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:21:53,085 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 39 treesize of output 30 [2022-12-14 11:21:53,561 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:21:53,561 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 65 treesize of output 58 [2022-12-14 11:21:53,845 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:21:53,845 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 65 treesize of output 58 [2022-12-14 11:21:54,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 26 [2022-12-14 11:21:54,570 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:21:54,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:21:55,291 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1133 (Array Int Int)) (v_ArrVal_1132 (Array Int Int))) (= (select |c_#valid| (select (select (let ((.cse1 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_1132))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_1133))) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1)) is different from false [2022-12-14 11:21:55,553 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1133 (Array Int Int)) (v_ArrVal_1132 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc20#1.base_26| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc20#1.base_26|) 0)) (= (select (store |c_#valid| |v_ULTIMATE.start_main_#t~malloc20#1.base_26| 1) (select (select (let ((.cse1 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base|) .cse1 |v_ULTIMATE.start_main_#t~malloc20#1.base_26|)) |v_ULTIMATE.start_main_#t~malloc20#1.base_26| v_ArrVal_1132))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_1133))) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1))) is different from false [2022-12-14 11:21:56,183 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:21:56,183 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 185 treesize of output 121 [2022-12-14 11:21:56,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:21:56,330 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:21:56,334 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 1030434 treesize of output 945570 [2022-12-14 11:22:01,656 INFO L321 Elim1Store]: treesize reduction 319, result has 65.1 percent of original size [2022-12-14 11:22:01,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 1416448 treesize of output 1223446 [2022-12-14 11:23:44,349 WARN L233 SmtUtils]: Spent 1.71m on a formula simplification. DAG size of input: 2097 DAG size of output: 2081 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 11:23:51,737 WARN L233 SmtUtils]: Spent 7.38s on a formula simplification. DAG size of input: 2047 DAG size of output: 2046 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 11:23:51,879 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 903783 treesize of output 861909 [2022-12-14 11:23:55,641 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 866045 treesize of output 859639 [2022-12-14 11:24:25,391 WARN L233 SmtUtils]: Spent 29.75s on a formula simplification. DAG size of input: 2051 DAG size of output: 2049 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 11:24:25,529 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 855539 treesize of output 834593 [2022-12-14 11:24:29,513 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:24:29,516 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 838478 treesize of output 826508 [2022-12-14 11:24:57,949 WARN L233 SmtUtils]: Spent 28.43s on a formula simplification. DAG size of input: 2052 DAG size of output: 2044 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 11:25:11,177 WARN L233 SmtUtils]: Spent 6.81s on a formula simplification that was a NOOP. DAG size: 1886 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 11:25:24,711 WARN L233 SmtUtils]: Spent 6.80s on a formula simplification that was a NOOP. DAG size: 1881 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 11:28:02,558 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:28:02,559 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 39 treesize of output 39 [2022-12-14 11:28:03,226 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:28:03,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 51 [2022-12-14 11:28:03,418 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:28:03,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805757209] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:28:03,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [824423415] [2022-12-14 11:28:03,419 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-12-14 11:28:03,419 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:28:03,420 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:28:03,420 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:28:03,420 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:28:03,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:03,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:03,466 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 [2022-12-14 11:28:03,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:03,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 30 treesize of output 21 [2022-12-14 11:28:03,499 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 [2022-12-14 11:28:03,509 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 [2022-12-14 11:28:03,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:03,530 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 21 treesize of output 20 [2022-12-14 11:28:03,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:03,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 34 treesize of output 21 [2022-12-14 11:28:03,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:03,558 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 21 treesize of output 20 [2022-12-14 11:28:03,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:03,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:03,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:03,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:03,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:03,666 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 36 treesize of output 40 [2022-12-14 11:28:03,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:03,694 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2022-12-14 11:28:03,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2022-12-14 11:28:03,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:03,726 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 30 treesize of output 21 [2022-12-14 11:28:03,748 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:03,779 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:28:03,779 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 164 treesize of output 117 [2022-12-14 11:28:03,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:03,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 86 [2022-12-14 11:28:03,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:03,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 50 treesize of output 21 [2022-12-14 11:28:03,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:03,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:03,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:03,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:03,887 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-12-14 11:28:03,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 202 treesize of output 150 [2022-12-14 11:28:03,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:03,935 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-12-14 11:28:03,935 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 5 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 122 [2022-12-14 11:28:03,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:03,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 42 treesize of output 21 [2022-12-14 11:28:04,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,049 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 38 treesize of output 47 [2022-12-14 11:28:04,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,085 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 34 treesize of output 21 [2022-12-14 11:28:04,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,106 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:04,107 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:04,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:04,143 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-14 11:28:04,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 8 case distinctions, treesize of input 158 treesize of output 111 [2022-12-14 11:28:04,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:04,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 51 [2022-12-14 11:28:04,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,219 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:04,220 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:04,276 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-12-14 11:28:04,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 302 treesize of output 198 [2022-12-14 11:28:04,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,307 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 5 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 126 [2022-12-14 11:28:04,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 48 treesize of output 21 [2022-12-14 11:28:04,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,377 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:04,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:04,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:04,442 INFO L321 Elim1Store]: treesize reduction 66, result has 20.5 percent of original size [2022-12-14 11:28:04,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 336 treesize of output 223 [2022-12-14 11:28:04,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,510 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 11:28:04,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 172 treesize of output 150 [2022-12-14 11:28:04,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 48 treesize of output 21 [2022-12-14 11:28:04,665 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 11:28:04,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-14 11:28:04,722 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:28:04,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-12-14 11:28:04,737 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 19 treesize of output 11 [2022-12-14 11:28:04,748 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 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 11:28:04,757 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 [2022-12-14 11:28:04,774 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:04,798 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:28:04,798 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 138 treesize of output 92 [2022-12-14 11:28:04,808 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 74 [2022-12-14 11:28:04,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2022-12-14 11:28:04,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:04,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:04,846 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:28:04,847 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 1 case distinctions, treesize of input 168 treesize of output 117 [2022-12-14 11:28:04,882 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-12-14 11:28:04,883 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 96 [2022-12-14 11:28:04,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2022-12-14 11:28:05,018 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-12-14 11:28:05,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 26 treesize of output 41 [2022-12-14 11:28:05,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2022-12-14 11:28:05,053 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 19 treesize of output 1 [2022-12-14 11:28:05,066 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:05,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:05,069 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:05,095 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-14 11:28:05,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 116 treesize of output 82 [2022-12-14 11:28:05,108 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 0 case distinctions, treesize of input 52 treesize of output 51 [2022-12-14 11:28:05,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:05,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:05,196 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-12-14 11:28:05,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 273 treesize of output 173 [2022-12-14 11:28:05,215 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 5 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 126 [2022-12-14 11:28:05,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 1 [2022-12-14 11:28:05,318 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:05,319 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:05,449 INFO L321 Elim1Store]: treesize reduction 218, result has 14.8 percent of original size [2022-12-14 11:28:05,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 634 treesize of output 427 [2022-12-14 11:28:05,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:05,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:05,616 INFO L321 Elim1Store]: treesize reduction 252, result has 17.1 percent of original size [2022-12-14 11:28:05,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 624 treesize of output 560 [2022-12-14 11:28:05,703 INFO L321 Elim1Store]: treesize reduction 140, result has 9.7 percent of original size [2022-12-14 11:28:05,703 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 542 treesize of output 499 [2022-12-14 11:28:06,129 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 11:28:06,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-14 11:28:06,190 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:28:06,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-12-14 11:28:06,204 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 [2022-12-14 11:28:06,213 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 19 treesize of output 11 [2022-12-14 11:28:06,224 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 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 11:28:06,240 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:06,276 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:28:06,276 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 138 treesize of output 92 [2022-12-14 11:28:06,286 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 74 [2022-12-14 11:28:06,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 1 [2022-12-14 11:28:06,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:06,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:06,321 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:06,325 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:28:06,325 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 1 case distinctions, treesize of input 176 treesize of output 125 [2022-12-14 11:28:06,360 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-12-14 11:28:06,361 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 110 [2022-12-14 11:28:06,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2022-12-14 11:28:06,501 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-12-14 11:28:06,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 26 treesize of output 41 [2022-12-14 11:28:06,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2022-12-14 11:28:06,540 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:06,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:06,543 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:06,571 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-14 11:28:06,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 116 treesize of output 82 [2022-12-14 11:28:06,585 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 0 case distinctions, treesize of input 52 treesize of output 51 [2022-12-14 11:28:06,601 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 19 treesize of output 1 [2022-12-14 11:28:06,621 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:06,622 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:06,678 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-12-14 11:28:06,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 273 treesize of output 173 [2022-12-14 11:28:06,696 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 5 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 126 [2022-12-14 11:28:06,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 1 [2022-12-14 11:28:06,786 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:06,786 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:06,925 INFO L321 Elim1Store]: treesize reduction 218, result has 14.8 percent of original size [2022-12-14 11:28:06,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 634 treesize of output 427 [2022-12-14 11:28:06,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:06,960 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:07,107 INFO L321 Elim1Store]: treesize reduction 252, result has 17.1 percent of original size [2022-12-14 11:28:07,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 624 treesize of output 560 [2022-12-14 11:28:07,202 INFO L321 Elim1Store]: treesize reduction 140, result has 9.7 percent of original size [2022-12-14 11:28:07,203 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 542 treesize of output 499 [2022-12-14 11:28:07,707 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 11:28:07,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-14 11:28:07,772 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:28:07,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-12-14 11:28:07,786 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 [2022-12-14 11:28:07,796 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 19 treesize of output 11 [2022-12-14 11:28:07,807 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 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 11:28:07,860 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-14 11:28:07,860 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 138 treesize of output 92 [2022-12-14 11:28:07,871 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 74 [2022-12-14 11:28:07,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2022-12-14 11:28:07,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:07,949 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 11:28:07,949 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 2 case distinctions, treesize of input 168 treesize of output 117 [2022-12-14 11:28:07,992 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-12-14 11:28:07,993 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 96 [2022-12-14 11:28:08,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 1 [2022-12-14 11:28:08,146 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-12-14 11:28:08,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 26 treesize of output 41 [2022-12-14 11:28:08,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 37 [2022-12-14 11:28:08,182 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 19 treesize of output 1 [2022-12-14 11:28:08,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:08,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:08,259 INFO L321 Elim1Store]: treesize reduction 85, result has 13.3 percent of original size [2022-12-14 11:28:08,259 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 143 treesize of output 105 [2022-12-14 11:28:08,279 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:28:08,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 80 [2022-12-14 11:28:08,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:08,393 INFO L321 Elim1Store]: treesize reduction 88, result has 14.6 percent of original size [2022-12-14 11:28:08,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 273 treesize of output 173 [2022-12-14 11:28:08,411 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 5 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 126 [2022-12-14 11:28:08,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 1 [2022-12-14 11:28:08,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:08,458 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:08,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:08,551 INFO L321 Elim1Store]: treesize reduction 150, result has 13.8 percent of original size [2022-12-14 11:28:08,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 307 treesize of output 198 [2022-12-14 11:28:08,590 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 11:28:08,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 172 treesize of output 150 [2022-12-14 11:28:08,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 1 [2022-12-14 11:28:08,775 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:28:08,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-12-14 11:28:08,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 11:28:08,802 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 [2022-12-14 11:28:08,811 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 19 treesize of output 11 [2022-12-14 11:28:08,823 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 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 11:28:08,838 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:08,867 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:28:08,868 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 138 treesize of output 92 [2022-12-14 11:28:08,878 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 74 [2022-12-14 11:28:08,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2022-12-14 11:28:08,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:08,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:08,912 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:08,916 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:28:08,917 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 1 case distinctions, treesize of input 168 treesize of output 117 [2022-12-14 11:28:08,954 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-12-14 11:28:08,954 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 96 [2022-12-14 11:28:08,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2022-12-14 11:28:09,103 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-12-14 11:28:09,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 26 treesize of output 41 [2022-12-14 11:28:09,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2022-12-14 11:28:09,134 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 19 treesize of output 1 [2022-12-14 11:28:09,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:09,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:09,151 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:09,178 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-14 11:28:09,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 116 treesize of output 82 [2022-12-14 11:28:09,194 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 0 case distinctions, treesize of input 52 treesize of output 51 [2022-12-14 11:28:09,218 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:09,218 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:09,273 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-12-14 11:28:09,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 273 treesize of output 173 [2022-12-14 11:28:09,289 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 5 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 126 [2022-12-14 11:28:09,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 1 [2022-12-14 11:28:09,338 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:09,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:09,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:09,443 INFO L321 Elim1Store]: treesize reduction 150, result has 13.8 percent of original size [2022-12-14 11:28:09,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 307 treesize of output 198 [2022-12-14 11:28:09,487 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 11:28:09,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 172 treesize of output 150 [2022-12-14 11:28:09,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 1 [2022-12-14 11:28:09,767 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:28:09,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-12-14 11:28:09,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 11:28:09,792 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 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 11:28:09,800 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 [2022-12-14 11:28:09,810 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 19 treesize of output 11 [2022-12-14 11:28:09,860 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-14 11:28:09,860 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 138 treesize of output 92 [2022-12-14 11:28:09,871 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 74 [2022-12-14 11:28:09,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2022-12-14 11:28:09,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:09,945 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 11:28:09,945 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 2 case distinctions, treesize of input 168 treesize of output 117 [2022-12-14 11:28:09,985 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-12-14 11:28:09,985 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 96 [2022-12-14 11:28:09,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2022-12-14 11:28:10,104 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 11:28:10,104 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 2 case distinctions, treesize of input 23 treesize of output 32 [2022-12-14 11:28:10,213 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-12-14 11:28:10,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 26 treesize of output 41 [2022-12-14 11:28:10,230 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 19 treesize of output 1 [2022-12-14 11:28:10,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:10,293 INFO L321 Elim1Store]: treesize reduction 61, result has 10.3 percent of original size [2022-12-14 11:28:10,294 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 116 treesize of output 82 [2022-12-14 11:28:10,307 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 0 case distinctions, treesize of input 52 treesize of output 51 [2022-12-14 11:28:10,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:10,423 INFO L321 Elim1Store]: treesize reduction 88, result has 14.6 percent of original size [2022-12-14 11:28:10,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 273 treesize of output 173 [2022-12-14 11:28:10,439 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 5 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 126 [2022-12-14 11:28:10,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 1 [2022-12-14 11:28:10,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:10,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:10,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:10,614 INFO L321 Elim1Store]: treesize reduction 150, result has 13.8 percent of original size [2022-12-14 11:28:10,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 307 treesize of output 198 [2022-12-14 11:28:10,674 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 11:28:10,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 172 treesize of output 150 [2022-12-14 11:28:10,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 1 [2022-12-14 11:28:10,835 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 11:28:10,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-14 11:28:10,901 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:28:10,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-12-14 11:28:10,916 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 [2022-12-14 11:28:10,925 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 19 treesize of output 11 [2022-12-14 11:28:10,935 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 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 11:28:10,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:10,981 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:28:10,981 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 138 treesize of output 92 [2022-12-14 11:28:10,993 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 74 [2022-12-14 11:28:11,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 1 [2022-12-14 11:28:11,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:11,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:11,026 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:11,029 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:28:11,030 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 1 case distinctions, treesize of input 176 treesize of output 125 [2022-12-14 11:28:11,069 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-12-14 11:28:11,070 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 110 [2022-12-14 11:28:11,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2022-12-14 11:28:11,217 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-12-14 11:28:11,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 26 treesize of output 41 [2022-12-14 11:28:11,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2022-12-14 11:28:11,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:11,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:11,257 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:11,285 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-14 11:28:11,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 116 treesize of output 82 [2022-12-14 11:28:11,301 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 0 case distinctions, treesize of input 52 treesize of output 51 [2022-12-14 11:28:11,316 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 19 treesize of output 1 [2022-12-14 11:28:11,338 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:11,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:11,400 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-12-14 11:28:11,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 273 treesize of output 173 [2022-12-14 11:28:11,416 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 5 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 126 [2022-12-14 11:28:11,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 1 [2022-12-14 11:28:11,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:11,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:11,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:11,586 INFO L321 Elim1Store]: treesize reduction 150, result has 13.8 percent of original size [2022-12-14 11:28:11,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 307 treesize of output 198 [2022-12-14 11:28:11,627 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 11:28:11,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 172 treesize of output 150 [2022-12-14 11:28:11,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 1 [2022-12-14 11:28:11,926 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 11:28:11,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-14 11:28:11,991 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:28:11,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-12-14 11:28:12,006 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 19 treesize of output 11 [2022-12-14 11:28:12,018 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 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 11:28:12,029 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 [2022-12-14 11:28:12,076 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-14 11:28:12,077 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 138 treesize of output 92 [2022-12-14 11:28:12,088 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 74 [2022-12-14 11:28:12,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 1 [2022-12-14 11:28:12,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:12,163 INFO L321 Elim1Store]: treesize reduction 53, result has 11.7 percent of original size [2022-12-14 11:28:12,163 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 2 case distinctions, treesize of input 176 treesize of output 125 [2022-12-14 11:28:12,202 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-12-14 11:28:12,202 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 110 [2022-12-14 11:28:12,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 1 [2022-12-14 11:28:12,363 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-12-14 11:28:12,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 26 treesize of output 41 [2022-12-14 11:28:12,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 37 [2022-12-14 11:28:12,406 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 19 treesize of output 1 [2022-12-14 11:28:12,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:12,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:12,464 INFO L321 Elim1Store]: treesize reduction 89, result has 12.7 percent of original size [2022-12-14 11:28:12,465 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 151 treesize of output 113 [2022-12-14 11:28:12,484 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:28:12,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 94 [2022-12-14 11:28:12,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:12,610 INFO L321 Elim1Store]: treesize reduction 88, result has 14.6 percent of original size [2022-12-14 11:28:12,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 273 treesize of output 173 [2022-12-14 11:28:12,627 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 5 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 126 [2022-12-14 11:28:12,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 1 [2022-12-14 11:28:12,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:12,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:12,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:12,786 INFO L321 Elim1Store]: treesize reduction 156, result has 13.3 percent of original size [2022-12-14 11:28:12,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 319 treesize of output 210 [2022-12-14 11:28:12,831 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 11:28:12,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 166 [2022-12-14 11:28:12,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 1 [2022-12-14 11:28:13,003 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 11:28:13,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-14 11:28:13,071 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:28:13,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-12-14 11:28:13,086 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 19 treesize of output 11 [2022-12-14 11:28:13,097 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 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 11:28:13,108 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 [2022-12-14 11:28:13,123 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:13,153 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:28:13,153 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 138 treesize of output 92 [2022-12-14 11:28:13,164 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 74 [2022-12-14 11:28:13,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 1 [2022-12-14 11:28:13,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:13,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:13,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:13,203 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:28:13,203 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 1 case distinctions, treesize of input 176 treesize of output 125 [2022-12-14 11:28:13,241 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-12-14 11:28:13,241 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 110 [2022-12-14 11:28:13,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2022-12-14 11:28:13,390 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-12-14 11:28:13,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 26 treesize of output 41 [2022-12-14 11:28:13,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2022-12-14 11:28:13,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:13,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:13,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:13,462 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-14 11:28:13,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 116 treesize of output 82 [2022-12-14 11:28:13,477 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 0 case distinctions, treesize of input 52 treesize of output 51 [2022-12-14 11:28:13,495 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 19 treesize of output 1 [2022-12-14 11:28:13,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:13,518 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:28:13,583 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-12-14 11:28:13,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 273 treesize of output 173 [2022-12-14 11:28:13,603 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 5 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 126 [2022-12-14 11:28:13,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 1 [2022-12-14 11:28:13,739 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2022-12-14 11:28:13,739 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 142 treesize of output 110 [2022-12-14 11:28:13,829 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-12-14 11:28:13,830 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 113 treesize of output 89 [2022-12-14 11:28:13,842 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 [2022-12-14 11:28:14,003 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:28:14,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-12-14 11:28:14,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 11:28:14,027 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 [2022-12-14 11:28:14,035 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 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 11:28:14,044 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 19 treesize of output 11 [2022-12-14 11:28:14,109 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-14 11:28:14,110 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 138 treesize of output 92 [2022-12-14 11:28:14,121 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 74 [2022-12-14 11:28:14,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2022-12-14 11:28:14,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:14,209 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 11:28:14,210 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 2 case distinctions, treesize of input 168 treesize of output 117 [2022-12-14 11:28:14,252 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-12-14 11:28:14,252 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 96 [2022-12-14 11:28:14,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 1 [2022-12-14 11:28:14,388 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 11:28:14,389 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 2 case distinctions, treesize of input 38 treesize of output 41 [2022-12-14 11:28:14,518 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-12-14 11:28:14,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 26 treesize of output 41 [2022-12-14 11:28:14,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:14,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:28:14,612 INFO L321 Elim1Store]: treesize reduction 85, result has 13.3 percent of original size [2022-12-14 11:28:14,612 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 143 treesize of output 105 [2022-12-14 11:28:14,633 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:28:14,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 80 [2022-12-14 11:28:14,652 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 19 treesize of output 1 [2022-12-14 11:28:14,671 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:28:20,738 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15607#(and (= |ULTIMATE.start_main_~root~0#1.offset| 0) (not (= (select |#valid| |ULTIMATE.start_main_~n~0#1.base|) 1)) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:28:20,738 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:28:20,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:28:20,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 17] total 44 [2022-12-14 11:28:20,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898896126] [2022-12-14 11:28:20,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:28:20,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-14 11:28:20,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:28:20,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-14 11:28:20,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=429, Invalid=3321, Unknown=40, NotChecked=242, Total=4032 [2022-12-14 11:28:20,740 INFO L87 Difference]: Start difference. First operand 503 states and 722 transitions. Second operand has 45 states, 44 states have (on average 1.8863636363636365) internal successors, (83), 45 states have internal predecessors, (83), 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) [2022-12-14 11:28:28,726 WARN L837 $PredicateComparison]: unable to prove that (and (= (select |c_#valid| |c_ULTIMATE.start_main_~root~0#1.base|) 1) (exists ((v_arrayElimCell_468 Int) (|v_ULTIMATE.start_main_~n~0#1.base_183| Int)) (and (not (= |v_ULTIMATE.start_main_~n~0#1.base_183| v_arrayElimCell_468)) (= (select |c_#valid| v_arrayElimCell_468) 1) (not (= v_arrayElimCell_468 |c_ULTIMATE.start_main_~n~0#1.base|)) (not (= |v_ULTIMATE.start_main_~n~0#1.base_183| |c_ULTIMATE.start_main_~n~0#1.base|)) (= (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_183|) 1))) (= |c_ULTIMATE.start_main_~root~0#1.offset| 0) (= (select |c_#valid| |c_ULTIMATE.start_main_~n~0#1.base|) 1) (forall ((v_ArrVal_1133 (Array Int Int)) (v_ArrVal_1132 (Array Int Int))) (= (select |c_#valid| (select (select (let ((.cse1 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_1132))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_1133))) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1))) is different from false [2022-12-14 11:28:31,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 11:28:31,658 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1133 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base|) (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4)) v_ArrVal_1133) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1)) (forall ((v_ArrVal_1133 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem22#1.base| v_ArrVal_1133) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1)) (= (select |c_#valid| |c_ULTIMATE.start_main_~n~0#1.base|) 1)) is different from false [2022-12-14 11:28:33,725 WARN L837 $PredicateComparison]: unable to prove that (and (= (select |c_#valid| |c_ULTIMATE.start_main_~root~0#1.base|) 1) (forall ((v_ArrVal_1133 (Array Int Int)) (v_ArrVal_1132 (Array Int Int))) (= (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem21#1.base| v_ArrVal_1132))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4)) v_ArrVal_1133)) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1)) (= |c_ULTIMATE.start_main_~root~0#1.offset| 0) (= (select |c_#valid| |c_ULTIMATE.start_main_~n~0#1.base|) 1)) is different from false [2022-12-14 11:28:50,639 WARN L233 SmtUtils]: Spent 12.19s on a formula simplification. DAG size of input: 51 DAG size of output: 38 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:28:55,423 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse5 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse2 (= .cse5 |c_ULTIMATE.start_main_~root~0#1.offset|)) (.cse3 (= |c_ULTIMATE.start_main_~n~0#1.offset| |c_ULTIMATE.start_main_~root~0#1.offset|)) (.cse1 (forall ((|v_ULTIMATE.start_main_#t~malloc14#1.base_27| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc14#1.base_27|) 0)))) (.cse0 (= |c_ULTIMATE.start_main_~root~0#1.base| |c_ULTIMATE.start_main_~n~0#1.base|)) (.cse4 (select |c_#valid| |c_ULTIMATE.start_main_~n~0#1.base|))) (and .cse0 (= (select |c_#valid| |c_ULTIMATE.start_main_~root~0#1.base|) 1) (or .cse1 .cse2 .cse3) (or (not (= .cse4 0)) .cse2) (forall ((v_ArrVal_1133 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base|) .cse5) v_ArrVal_1133) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1)) (or .cse2 .cse3) (or .cse1 .cse0) (= .cse4 1)))) is different from false [2022-12-14 11:28:57,930 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse2 (= .cse6 |c_ULTIMATE.start_main_~root~0#1.offset|)) (.cse3 (= |c_ULTIMATE.start_main_~n~0#1.offset| |c_ULTIMATE.start_main_~root~0#1.offset|)) (.cse1 (forall ((|v_ULTIMATE.start_main_#t~malloc14#1.base_27| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc14#1.base_27|) 0)))) (.cse0 (= |c_ULTIMATE.start_main_~root~0#1.base| |c_ULTIMATE.start_main_~n~0#1.base|)) (.cse4 (select |c_#valid| |c_ULTIMATE.start_main_~n~0#1.base|))) (and .cse0 (= (select |c_#valid| |c_ULTIMATE.start_main_~root~0#1.base|) 1) (or .cse1 .cse2 .cse3) (or (not (= .cse4 0)) .cse2) (forall ((v_ArrVal_1133 (Array Int Int)) (v_ArrVal_1132 (Array Int Int))) (= (select |c_#valid| (select (select (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem21#1.base| v_ArrVal_1132))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~n~0#1.base|) .cse6) v_ArrVal_1133)) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1)) (or .cse2 .cse3) (or .cse1 .cse0) (= .cse4 1)))) is different from false [2022-12-14 11:28:58,068 WARN L837 $PredicateComparison]: unable to prove that (and (= (select |c_#valid| |c_ULTIMATE.start_main_~root~0#1.base|) 1) (= (select |c_#valid| |c_ULTIMATE.start_main_~n~0#1.base|) 1) (forall ((v_ArrVal_1133 (Array Int Int)) (v_ArrVal_1132 (Array Int Int))) (= (select |c_#valid| (select (select (let ((.cse1 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_1132))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_1133))) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1))) is different from false [2022-12-14 11:29:05,700 WARN L837 $PredicateComparison]: unable to prove that (and (= (select |c_#valid| |c_ULTIMATE.start_main_~root~0#1.base|) 1) (exists ((v_arrayElimCell_468 Int) (|v_ULTIMATE.start_main_~n~0#1.base_183| Int)) (and (not (= |v_ULTIMATE.start_main_~n~0#1.base_183| v_arrayElimCell_468)) (= (select |c_#valid| v_arrayElimCell_468) 1) (not (= v_arrayElimCell_468 |c_ULTIMATE.start_main_~n~0#1.base|)) (not (= |v_ULTIMATE.start_main_~n~0#1.base_183| |c_ULTIMATE.start_main_~n~0#1.base|)) (= (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_183|) 1))) (forall ((v_ArrVal_1133 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base|) (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4)) v_ArrVal_1133) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1)) (= (select |c_#valid| |c_ULTIMATE.start_main_~n~0#1.base|) 1)) is different from false [2022-12-14 11:29:07,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:29:07,056 INFO L93 Difference]: Finished difference Result 2708 states and 3656 transitions. [2022-12-14 11:29:07,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-12-14 11:29:07,056 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.8863636363636365) internal successors, (83), 45 states have internal predecessors, (83), 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 31 [2022-12-14 11:29:07,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:29:07,066 INFO L225 Difference]: With dead ends: 2708 [2022-12-14 11:29:07,066 INFO L226 Difference]: Without dead ends: 2708 [2022-12-14 11:29:07,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 74 SyntacticMatches, 4 SemanticMatches, 168 ConstructedPredicates, 9 IntricatePredicates, 2 DeprecatedPredicates, 9389 ImplicationChecksByTransitivity, 44.9s TimeCoverageRelationStatistics Valid=3385, Invalid=22176, Unknown=235, NotChecked=2934, Total=28730 [2022-12-14 11:29:07,069 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 2020 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 2663 mSolverCounterSat, 230 mSolverCounterUnsat, 60 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2020 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 3776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 2663 IncrementalHoareTripleChecker+Invalid, 60 IncrementalHoareTripleChecker+Unknown, 823 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-12-14 11:29:07,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2020 Valid, 1228 Invalid, 3776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 2663 Invalid, 60 Unknown, 823 Unchecked, 11.5s Time] [2022-12-14 11:29:07,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2022-12-14 11:29:07,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 749. [2022-12-14 11:29:07,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 727 states have (on average 1.4869325997248968) internal successors, (1081), 748 states have internal predecessors, (1081), 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) [2022-12-14 11:29:07,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1081 transitions. [2022-12-14 11:29:07,092 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1081 transitions. Word has length 31 [2022-12-14 11:29:07,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:29:07,092 INFO L495 AbstractCegarLoop]: Abstraction has 749 states and 1081 transitions. [2022-12-14 11:29:07,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 1.8863636363636365) internal successors, (83), 45 states have internal predecessors, (83), 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) [2022-12-14 11:29:07,092 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1081 transitions. [2022-12-14 11:29:07,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-14 11:29:07,093 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:29:07,093 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:29:07,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 11:29:07,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-12-14 11:29:07,294 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-12-14 11:29:07,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:29:07,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1029363531, now seen corresponding path program 1 times [2022-12-14 11:29:07,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:29:07,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664787065] [2022-12-14 11:29:07,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:29:07,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:29:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:29:08,827 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:29:08,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:29:08,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664787065] [2022-12-14 11:29:08,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664787065] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:29:08,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020151557] [2022-12-14 11:29:08,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:29:08,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:29:08,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:29:08,829 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:29:08,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d044e78b-78a6-4b29-995b-f099527baa65/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 11:29:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:29:08,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 71 conjunts are in the unsatisfiable core [2022-12-14 11:29:08,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:29:09,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:29:09,334 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:29:09,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-12-14 11:29:09,491 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 [2022-12-14 11:29:09,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 11:29:09,922 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:29:09,922 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 55 treesize of output 50 [2022-12-14 11:29:09,942 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 18 treesize of output 20 [2022-12-14 11:29:10,246 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:29:10,246 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 55 treesize of output 50 [2022-12-14 11:29:10,261 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 18 treesize of output 20 [2022-12-14 11:29:10,673 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-12-14 11:29:10,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-12-14 11:29:10,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 18 [2022-12-14 11:29:10,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:10,917 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 [2022-12-14 11:29:10,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:10,939 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 56 treesize of output 37 [2022-12-14 11:29:11,413 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:29:11,414 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 74 treesize of output 65 [2022-12-14 11:29:11,443 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 20 treesize of output 22 [2022-12-14 11:29:11,724 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:29:11,724 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 74 treesize of output 65 [2022-12-14 11:29:11,757 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 20 treesize of output 22 [2022-12-14 11:29:12,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2022-12-14 11:29:12,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:29:12,568 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:29:12,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:29:13,075 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1259 (Array Int Int)) (v_ArrVal_1260 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem22#1.base| v_ArrVal_1259) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem22#1.base| v_ArrVal_1260) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)))) (forall ((v_ArrVal_1259 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem22#1.base| v_ArrVal_1259) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)))) is different from false [2022-12-14 11:29:13,099 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base|) (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4)))) (and (forall ((v_ArrVal_1259 (Array Int Int)) (v_ArrVal_1260 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1259) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1260) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)))) (forall ((v_ArrVal_1259 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1259) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|))))) is different from false [2022-12-14 11:29:13,125 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (and (forall ((v_ArrVal_1259 (Array Int Int)) (v_ArrVal_1258 (Array Int Int)) (v_ArrVal_1257 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem21#1.base| v_ArrVal_1258) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem21#1.base| v_ArrVal_1257) |c_ULTIMATE.start_main_~n~0#1.base|) .cse0) v_ArrVal_1259) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|))) (forall ((v_ArrVal_1259 (Array Int Int)) (v_ArrVal_1258 (Array Int Int)) (v_ArrVal_1257 (Array Int Int)) (v_ArrVal_1260 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem21#1.base| v_ArrVal_1257))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~n~0#1.base|) .cse0))) (<= (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem21#1.base| v_ArrVal_1258) .cse1 v_ArrVal_1259) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 4) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1260) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)))))))) is different from false [2022-12-14 11:29:13,151 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1259 (Array Int Int)) (v_ArrVal_1258 (Array Int Int)) (v_ArrVal_1257 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1258) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1257) |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_1259) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|))) (forall ((v_ArrVal_1259 (Array Int Int)) (v_ArrVal_1258 (Array Int Int)) (v_ArrVal_1257 (Array Int Int)) (v_ArrVal_1260 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1257))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~n~0#1.base|) .cse1))) (<= (+ (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1258) .cse2 v_ArrVal_1259) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 4) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_1260) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|))))))))) is different from false [2022-12-14 11:29:13,199 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse0 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~n~0#1.base|)) (.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base|) .cse1 |c_ULTIMATE.start_main_#t~malloc20#1.base|)))) (and (forall ((v_ArrVal_1259 (Array Int Int)) (v_ArrVal_1258 (Array Int Int)) (v_ArrVal_1257 (Array Int Int)) (v_ArrVal_1256 Int) (v_ArrVal_1260 (Array Int Int))) (let ((.cse3 (store .cse4 |c_ULTIMATE.start_main_#t~malloc20#1.base| v_ArrVal_1257))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~n~0#1.base|) .cse1))) (<= (+ 4 (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~n~0#1.base| (store .cse0 .cse1 v_ArrVal_1256)) |c_ULTIMATE.start_main_#t~malloc20#1.base| v_ArrVal_1258) .cse2 v_ArrVal_1259) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_1260) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)))))) (forall ((v_ArrVal_1259 (Array Int Int)) (v_ArrVal_1258 (Array Int Int)) (v_ArrVal_1257 (Array Int Int)) (v_ArrVal_1256 Int)) (<= 0 (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~n~0#1.base| (store .cse0 .cse1 v_ArrVal_1256)) |c_ULTIMATE.start_main_#t~malloc20#1.base| v_ArrVal_1258) (select (select (store .cse4 |c_ULTIMATE.start_main_#t~malloc20#1.base| v_ArrVal_1257) |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_1259) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)))))) is different from false [2022-12-14 11:29:13,850 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (and (forall ((v_ArrVal_1250 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem16#1.base| v_ArrVal_1250))) (let ((.cse0 (select .cse3 |c_ULTIMATE.start_main_~n~0#1.base|))) (or (not (= (select .cse0 .cse1) 0)) (forall ((v_ArrVal_1251 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc20#1.base_38| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc20#1.base_38|) 0)) (forall ((v_ArrVal_1259 (Array Int Int)) (v_ArrVal_1258 (Array Int Int)) (v_ArrVal_1257 (Array Int Int)) (v_ArrVal_1256 Int)) (<= 0 (select (select (store (store (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem16#1.base| v_ArrVal_1251))) (store .cse2 |c_ULTIMATE.start_main_~n~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~n~0#1.base|) .cse1 v_ArrVal_1256))) |v_ULTIMATE.start_main_#t~malloc20#1.base_38| v_ArrVal_1258) (select (select (store (store .cse3 |c_ULTIMATE.start_main_~n~0#1.base| (store .cse0 .cse1 |v_ULTIMATE.start_main_#t~malloc20#1.base_38|)) |v_ULTIMATE.start_main_#t~malloc20#1.base_38| v_ArrVal_1257) |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_1259) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|))))))))) (forall ((v_ArrVal_1250 (Array Int Int))) (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem16#1.base| v_ArrVal_1250))) (let ((.cse4 (select .cse8 |c_ULTIMATE.start_main_~n~0#1.base|))) (or (not (= (select .cse4 .cse1) 0)) (forall ((v_ArrVal_1251 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc20#1.base_38| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc20#1.base_38|) 0)) (forall ((v_ArrVal_1259 (Array Int Int)) (v_ArrVal_1252 Int) (v_ArrVal_1258 (Array Int Int)) (v_ArrVal_1257 (Array Int Int)) (v_ArrVal_1256 Int) (v_ArrVal_1260 (Array Int Int))) (let ((.cse7 (store (store .cse8 |c_ULTIMATE.start_main_~n~0#1.base| (store .cse4 .cse1 |v_ULTIMATE.start_main_#t~malloc20#1.base_38|)) |v_ULTIMATE.start_main_#t~malloc20#1.base_38| v_ArrVal_1257))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~n~0#1.base|) .cse1))) (<= (+ (select (select (store (store (let ((.cse5 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem16#1.base| v_ArrVal_1251))) (store .cse5 |c_ULTIMATE.start_main_~n~0#1.base| (store (select .cse5 |c_ULTIMATE.start_main_~n~0#1.base|) .cse1 v_ArrVal_1256))) |v_ULTIMATE.start_main_#t~malloc20#1.base_38| v_ArrVal_1258) .cse6 v_ArrVal_1259) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 4) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc20#1.base_38| v_ArrVal_1252) (select (select (store .cse7 .cse6 v_ArrVal_1260) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)))))))))))))) is different from false [2022-12-14 11:29:13,914 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4)) (.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|))) (and (forall ((v_ArrVal_1250 (Array Int Int))) (let ((.cse5 (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_1250))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~n~0#1.base|))) (or (forall ((v_ArrVal_1251 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc20#1.base_38| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc20#1.base_38|) 0)) (forall ((v_ArrVal_1259 (Array Int Int)) (v_ArrVal_1252 Int) (v_ArrVal_1258 (Array Int Int)) (v_ArrVal_1257 (Array Int Int)) (v_ArrVal_1256 Int) (v_ArrVal_1260 (Array Int Int))) (let ((.cse4 (store (store .cse5 |c_ULTIMATE.start_main_~n~0#1.base| (store .cse6 .cse1 |v_ULTIMATE.start_main_#t~malloc20#1.base_38|)) |v_ULTIMATE.start_main_#t~malloc20#1.base_38| v_ArrVal_1257))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~n~0#1.base|) .cse1))) (<= (+ 4 (select (select (store (store (let ((.cse0 (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1251))) (store .cse0 |c_ULTIMATE.start_main_~n~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) .cse1 v_ArrVal_1256))) |v_ULTIMATE.start_main_#t~malloc20#1.base_38| v_ArrVal_1258) .cse3 v_ArrVal_1259) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc20#1.base_38| v_ArrVal_1252) (select (select (store .cse4 .cse3 v_ArrVal_1260) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)))))))) (not (= (select .cse6 .cse1) 0)))))) (forall ((v_ArrVal_1250 (Array Int Int))) (let ((.cse8 (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_1250))) (let ((.cse9 (select .cse8 |c_ULTIMATE.start_main_~n~0#1.base|))) (or (forall ((v_ArrVal_1251 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc20#1.base_38| Int)) (or (forall ((v_ArrVal_1259 (Array Int Int)) (v_ArrVal_1258 (Array Int Int)) (v_ArrVal_1257 (Array Int Int)) (v_ArrVal_1256 Int)) (<= 0 (select (select (store (store (let ((.cse7 (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1251))) (store .cse7 |c_ULTIMATE.start_main_~n~0#1.base| (store (select .cse7 |c_ULTIMATE.start_main_~n~0#1.base|) .cse1 v_ArrVal_1256))) |v_ULTIMATE.start_main_#t~malloc20#1.base_38| v_ArrVal_1258) (select (select (store (store .cse8 |c_ULTIMATE.start_main_~n~0#1.base| (store .cse9 .cse1 |v_ULTIMATE.start_main_#t~malloc20#1.base_38|)) |v_ULTIMATE.start_main_#t~malloc20#1.base_38| v_ArrVal_1257) |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_1259) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc20#1.base_38|) 0)))) (not (= (select .cse9 .cse1) 0)))))))) is different from false [2022-12-14 11:29:13,983 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (and (forall ((v_ArrVal_1249 (Array Int Int)) (v_ArrVal_1248 (Array Int Int)) (v_ArrVal_1250 (Array Int Int))) (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem15#1.base| v_ArrVal_1248))) (let ((.cse2 (select (select .cse5 |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|))) (let ((.cse3 (store .cse5 .cse2 v_ArrVal_1250))) (let ((.cse4 (select .cse3 |c_ULTIMATE.start_main_~n~0#1.base|))) (or (forall ((v_ArrVal_1251 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc20#1.base_38| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc20#1.base_38|) 0)) (forall ((v_ArrVal_1259 (Array Int Int)) (v_ArrVal_1258 (Array Int Int)) (v_ArrVal_1257 (Array Int Int)) (v_ArrVal_1256 Int)) (<= 0 (select (select (store (store (let ((.cse0 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem15#1.base| v_ArrVal_1249) .cse2 v_ArrVal_1251))) (store .cse0 |c_ULTIMATE.start_main_~n~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) .cse1 v_ArrVal_1256))) |v_ULTIMATE.start_main_#t~malloc20#1.base_38| v_ArrVal_1258) (select (select (store (store .cse3 |c_ULTIMATE.start_main_~n~0#1.base| (store .cse4 .cse1 |v_ULTIMATE.start_main_#t~malloc20#1.base_38|)) |v_ULTIMATE.start_main_#t~malloc20#1.base_38| v_ArrVal_1257) |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_1259) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|))))) (not (= (select .cse4 .cse1) 0)))))))) (forall ((v_ArrVal_1249 (Array Int Int)) (v_ArrVal_1248 (Array Int Int)) (v_ArrVal_1250 (Array Int Int))) (let ((.cse12 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem15#1.base| v_ArrVal_1248))) (let ((.cse7 (select (select .cse12 |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|))) (let ((.cse10 (store .cse12 .cse7 v_ArrVal_1250))) (let ((.cse11 (select .cse10 |c_ULTIMATE.start_main_~n~0#1.base|))) (or (forall ((v_ArrVal_1251 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc20#1.base_38| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc20#1.base_38|) 0)) (forall ((v_ArrVal_1259 (Array Int Int)) (v_ArrVal_1252 Int) (v_ArrVal_1258 (Array Int Int)) (v_ArrVal_1257 (Array Int Int)) (v_ArrVal_1256 Int) (v_ArrVal_1260 (Array Int Int))) (let ((.cse9 (store (store .cse10 |c_ULTIMATE.start_main_~n~0#1.base| (store .cse11 .cse1 |v_ULTIMATE.start_main_#t~malloc20#1.base_38|)) |v_ULTIMATE.start_main_#t~malloc20#1.base_38| v_ArrVal_1257))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~n~0#1.base|) .cse1))) (<= (+ (select (select (store (store (let ((.cse6 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem15#1.base| v_ArrVal_1249) .cse7 v_ArrVal_1251))) (store .cse6 |c_ULTIMATE.start_main_~n~0#1.base| (store (select .cse6 |c_ULTIMATE.start_main_~n~0#1.base|) .cse1 v_ArrVal_1256))) |v_ULTIMATE.start_main_#t~malloc20#1.base_38| v_ArrVal_1258) .cse8 v_ArrVal_1259) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 4) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc20#1.base_38| v_ArrVal_1252) (select (select (store .cse9 .cse8 v_ArrVal_1260) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)))))))) (not (= (select .cse11 .cse1) 0)))))))))) is different from false [2022-12-14 11:29:14,590 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:29:14,591 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 320 treesize of output 313 [2022-12-14 11:29:14,607 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:29:14,607 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 344 treesize of output 224 [2022-12-14 11:29:14,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:14,760 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:29:14,764 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 4479388 treesize of output 4361190 [2022-12-14 11:29:20,225 WARN L233 SmtUtils]: Spent 5.46s on a formula simplification that was a NOOP. DAG size: 2499 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 11:29:20,739 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:29:20,745 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 736361908 treesize of output 725874106