./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/alternating_list-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/alternating_list-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 941f3dd0e4566f414ae914eed10af26405f8e9f2f3d427c146090b07336d2fc2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:06:16,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:06:16,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:06:16,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:06:16,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:06:16,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:06:16,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:06:16,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:06:16,374 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:06:16,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:06:16,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:06:16,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:06:16,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:06:16,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:06:16,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:06:16,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:06:16,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:06:16,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:06:16,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:06:16,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:06:16,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:06:16,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:06:16,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:06:16,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:06:16,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:06:16,425 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:06:16,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:06:16,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:06:16,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:06:16,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:06:16,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:06:16,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:06:16,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:06:16,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:06:16,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:06:16,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:06:16,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:06:16,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:06:16,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:06:16,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:06:16,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:06:16,439 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-23 14:06:16,481 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:06:16,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:06:16,482 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:06:16,482 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:06:16,483 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:06:16,483 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:06:16,484 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:06:16,484 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:06:16,484 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:06:16,484 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:06:16,485 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:06:16,486 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:06:16,486 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:06:16,486 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:06:16,486 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:06:16,487 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:06:16,487 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:06:16,487 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:06:16,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 14:06:16,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 14:06:16,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:06:16,488 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:06:16,489 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:06:16,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:06:16,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:06:16,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:06:16,489 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 14:06:16,490 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 14:06:16,490 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 14:06:16,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:06:16,491 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 14:06:16,491 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:06:16,491 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:06:16,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:06:16,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:06:16,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:06:16,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:06:16,492 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:06:16,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:06:16,493 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:06:16,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:06:16,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:06:16,493 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_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 941f3dd0e4566f414ae914eed10af26405f8e9f2f3d427c146090b07336d2fc2 [2022-11-23 14:06:16,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:06:16,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:06:16,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:06:16,854 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:06:16,855 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:06:16,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/list-properties/alternating_list-1.i [2022-11-23 14:06:19,900 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:06:20,174 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:06:20,175 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/sv-benchmarks/c/list-properties/alternating_list-1.i [2022-11-23 14:06:20,186 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/data/7b3889394/3d1360dbead34485bd73a0ba22981873/FLAG25392191f [2022-11-23 14:06:20,200 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/data/7b3889394/3d1360dbead34485bd73a0ba22981873 [2022-11-23 14:06:20,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:06:20,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:06:20,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:06:20,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:06:20,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:06:20,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:06:20" (1/1) ... [2022-11-23 14:06:20,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be602c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:20, skipping insertion in model container [2022-11-23 14:06:20,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:06:20" (1/1) ... [2022-11-23 14:06:20,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:06:20,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:06:20,690 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/sv-benchmarks/c/list-properties/alternating_list-1.i[23574,23587] [2022-11-23 14:06:20,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:06:20,707 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:06:20,745 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/sv-benchmarks/c/list-properties/alternating_list-1.i[23574,23587] [2022-11-23 14:06:20,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:06:20,773 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:06:20,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:20 WrapperNode [2022-11-23 14:06:20,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:06:20,775 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:06:20,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:06:20,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:06:20,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:20" (1/1) ... [2022-11-23 14:06:20,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:20" (1/1) ... [2022-11-23 14:06:20,815 INFO L138 Inliner]: procedures = 124, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 91 [2022-11-23 14:06:20,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:06:20,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:06:20,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:06:20,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:06:20,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:20" (1/1) ... [2022-11-23 14:06:20,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:20" (1/1) ... [2022-11-23 14:06:20,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:20" (1/1) ... [2022-11-23 14:06:20,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:20" (1/1) ... [2022-11-23 14:06:20,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:20" (1/1) ... [2022-11-23 14:06:20,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:20" (1/1) ... [2022-11-23 14:06:20,844 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:20" (1/1) ... [2022-11-23 14:06:20,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:20" (1/1) ... [2022-11-23 14:06:20,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:06:20,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:06:20,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:06:20,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:06:20,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:20" (1/1) ... [2022-11-23 14:06:20,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:06:20,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:06:20,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:06:20,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:06:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-11-23 14:06:20,921 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-11-23 14:06:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:06:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:06:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:06:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:06:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:06:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:06:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:06:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:06:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:06:20,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:06:21,041 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:06:21,044 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:06:21,086 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-11-23 14:06:21,385 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:06:21,448 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:06:21,448 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-23 14:06:21,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:06:21 BoogieIcfgContainer [2022-11-23 14:06:21,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:06:21,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:06:21,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:06:21,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:06:21,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:06:20" (1/3) ... [2022-11-23 14:06:21,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23750e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:06:21, skipping insertion in model container [2022-11-23 14:06:21,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:20" (2/3) ... [2022-11-23 14:06:21,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23750e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:06:21, skipping insertion in model container [2022-11-23 14:06:21,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:06:21" (3/3) ... [2022-11-23 14:06:21,460 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list-1.i [2022-11-23 14:06:21,480 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:06:21,480 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-11-23 14:06:21,542 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:06:21,552 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;@323a3661, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:06:21,554 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2022-11-23 14:06:21,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 35 states have (on average 2.2) internal successors, (77), 66 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:21,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 14:06:21,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:21,569 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 14:06:21,570 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-23 14:06:21,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:21,576 INFO L85 PathProgramCache]: Analyzing trace with hash 167560794, now seen corresponding path program 1 times [2022-11-23 14:06:21,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:06:21,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609669990] [2022-11-23 14:06:21,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:21,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:06:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:21,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:21,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:06:21,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609669990] [2022-11-23 14:06:21,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609669990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:06:21,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:06:21,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:06:21,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524855514] [2022-11-23 14:06:21,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:06:21,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 14:06:21,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:06:21,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 14:06:21,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:06:21,820 INFO L87 Difference]: Start difference. First operand has 68 states, 35 states have (on average 2.2) internal successors, (77), 66 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:21,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:21,887 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2022-11-23 14:06:21,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 14:06:21,892 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 14:06:21,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:21,898 INFO L225 Difference]: With dead ends: 68 [2022-11-23 14:06:21,899 INFO L226 Difference]: Without dead ends: 63 [2022-11-23 14:06:21,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:06:21,910 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:21,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:06:21,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-23 14:06:21,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-11-23 14:06:21,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 33 states have (on average 2.0606060606060606) internal successors, (68), 62 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:21,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2022-11-23 14:06:21,946 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 5 [2022-11-23 14:06:21,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:21,947 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2022-11-23 14:06:21,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:21,947 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2022-11-23 14:06:21,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 14:06:21,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:21,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 14:06:21,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:06:21,948 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-23 14:06:21,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:21,949 INFO L85 PathProgramCache]: Analyzing trace with hash 899381665, now seen corresponding path program 1 times [2022-11-23 14:06:21,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:06:21,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715602419] [2022-11-23 14:06:21,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:21,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:06:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:22,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:22,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:06:22,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715602419] [2022-11-23 14:06:22,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715602419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:06:22,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:06:22,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:06:22,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26023252] [2022-11-23 14:06:22,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:06:22,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:06:22,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:06:22,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:06:22,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:06:22,062 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:22,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:22,199 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2022-11-23 14:06:22,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:06:22,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-23 14:06:22,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:22,202 INFO L225 Difference]: With dead ends: 83 [2022-11-23 14:06:22,202 INFO L226 Difference]: Without dead ends: 83 [2022-11-23 14:06:22,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:06:22,204 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 111 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:22,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 41 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:06:22,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-23 14:06:22,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 64. [2022-11-23 14:06:22,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 41 states have (on average 1.853658536585366) internal successors, (76), 63 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:22,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2022-11-23 14:06:22,212 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 6 [2022-11-23 14:06:22,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:22,212 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2022-11-23 14:06:22,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:22,213 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2022-11-23 14:06:22,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 14:06:22,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:22,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 14:06:22,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:06:22,214 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-23 14:06:22,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:22,215 INFO L85 PathProgramCache]: Analyzing trace with hash 899381666, now seen corresponding path program 1 times [2022-11-23 14:06:22,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:06:22,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732726300] [2022-11-23 14:06:22,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:22,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:06:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:22,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:22,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:06:22,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732726300] [2022-11-23 14:06:22,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732726300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:06:22,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:06:22,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:06:22,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075623886] [2022-11-23 14:06:22,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:06:22,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:06:22,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:06:22,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:06:22,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:06:22,445 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:22,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:22,592 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2022-11-23 14:06:22,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:06:22,593 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-23 14:06:22,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:22,594 INFO L225 Difference]: With dead ends: 86 [2022-11-23 14:06:22,594 INFO L226 Difference]: Without dead ends: 86 [2022-11-23 14:06:22,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:06:22,596 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 119 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:22,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 52 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:06:22,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-23 14:06:22,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 78. [2022-11-23 14:06:22,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 55 states have (on average 1.6363636363636365) internal successors, (90), 77 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:22,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 90 transitions. [2022-11-23 14:06:22,605 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 90 transitions. Word has length 6 [2022-11-23 14:06:22,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:22,605 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 90 transitions. [2022-11-23 14:06:22,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:22,606 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 90 transitions. [2022-11-23 14:06:22,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 14:06:22,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:22,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:06:22,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:06:22,607 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-23 14:06:22,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:22,608 INFO L85 PathProgramCache]: Analyzing trace with hash 412646002, now seen corresponding path program 1 times [2022-11-23 14:06:22,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:06:22,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349159236] [2022-11-23 14:06:22,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:22,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:06:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:22,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:22,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:06:22,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349159236] [2022-11-23 14:06:22,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349159236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:06:22,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:06:22,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:06:22,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391756424] [2022-11-23 14:06:22,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:06:22,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:06:22,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:06:22,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:06:22,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:06:22,670 INFO L87 Difference]: Start difference. First operand 78 states and 90 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) [2022-11-23 14:06:22,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:22,704 INFO L93 Difference]: Finished difference Result 123 states and 134 transitions. [2022-11-23 14:06:22,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:06:22,704 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 [2022-11-23 14:06:22,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:22,706 INFO L225 Difference]: With dead ends: 123 [2022-11-23 14:06:22,706 INFO L226 Difference]: Without dead ends: 123 [2022-11-23 14:06:22,707 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 [2022-11-23 14:06:22,708 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 46 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:22,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 106 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:06:22,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-23 14:06:22,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 86. [2022-11-23 14:06:22,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 63 states have (on average 1.619047619047619) internal successors, (102), 85 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:22,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions. [2022-11-23 14:06:22,718 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 12 [2022-11-23 14:06:22,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:22,718 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 102 transitions. [2022-11-23 14:06:22,719 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) [2022-11-23 14:06:22,719 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions. [2022-11-23 14:06:22,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 14:06:22,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:22,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:06:22,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:06:22,721 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-23 14:06:22,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:22,721 INFO L85 PathProgramCache]: Analyzing trace with hash 412338172, now seen corresponding path program 1 times [2022-11-23 14:06:22,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:06:22,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53826912] [2022-11-23 14:06:22,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:22,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:06:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:22,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:06:22,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53826912] [2022-11-23 14:06:22,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53826912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:06:22,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:06:22,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:06:22,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063320132] [2022-11-23 14:06:22,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:06:22,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:06:22,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:06:22,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:06:22,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:06:22,929 INFO L87 Difference]: Start difference. First operand 86 states and 102 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:23,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:23,101 INFO L93 Difference]: Finished difference Result 106 states and 120 transitions. [2022-11-23 14:06:23,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:06:23,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-23 14:06:23,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:23,109 INFO L225 Difference]: With dead ends: 106 [2022-11-23 14:06:23,110 INFO L226 Difference]: Without dead ends: 106 [2022-11-23 14:06:23,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:06:23,119 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 42 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:23,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 136 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:06:23,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-23 14:06:23,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 88. [2022-11-23 14:06:23,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 65 states have (on average 1.6) internal successors, (104), 87 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:23,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 104 transitions. [2022-11-23 14:06:23,127 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 104 transitions. Word has length 12 [2022-11-23 14:06:23,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:23,127 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 104 transitions. [2022-11-23 14:06:23,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:23,128 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 104 transitions. [2022-11-23 14:06:23,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 14:06:23,128 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:23,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:06:23,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:06:23,137 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-23 14:06:23,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:23,139 INFO L85 PathProgramCache]: Analyzing trace with hash -133788534, now seen corresponding path program 1 times [2022-11-23 14:06:23,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:06:23,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532911630] [2022-11-23 14:06:23,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:23,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:06:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:23,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:23,234 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:06:23,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532911630] [2022-11-23 14:06:23,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532911630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:06:23,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:06:23,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:06:23,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215842082] [2022-11-23 14:06:23,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:06:23,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:06:23,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:06:23,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:06:23,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:06:23,237 INFO L87 Difference]: Start difference. First operand 88 states and 104 transitions. Second operand has 4 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) [2022-11-23 14:06:23,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:23,336 INFO L93 Difference]: Finished difference Result 92 states and 107 transitions. [2022-11-23 14:06:23,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:06:23,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 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 [2022-11-23 14:06:23,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:23,341 INFO L225 Difference]: With dead ends: 92 [2022-11-23 14:06:23,341 INFO L226 Difference]: Without dead ends: 92 [2022-11-23 14:06:23,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:06:23,347 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 94 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:23,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 62 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:06:23,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-23 14:06:23,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 89. [2022-11-23 14:06:23,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 66 states have (on average 1.5909090909090908) internal successors, (105), 88 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:23,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 105 transitions. [2022-11-23 14:06:23,372 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 105 transitions. Word has length 13 [2022-11-23 14:06:23,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:23,372 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 105 transitions. [2022-11-23 14:06:23,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2022-11-23 14:06:23,372 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 105 transitions. [2022-11-23 14:06:23,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 14:06:23,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:23,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:06:23,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:06:23,374 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-23 14:06:23,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:23,374 INFO L85 PathProgramCache]: Analyzing trace with hash -133785972, now seen corresponding path program 1 times [2022-11-23 14:06:23,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:06:23,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756910423] [2022-11-23 14:06:23,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:23,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:06:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:23,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:23,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:06:23,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756910423] [2022-11-23 14:06:23,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756910423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:06:23,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:06:23,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:06:23,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373519350] [2022-11-23 14:06:23,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:06:23,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:06:23,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:06:23,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:06:23,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:06:23,465 INFO L87 Difference]: Start difference. First operand 89 states and 105 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2022-11-23 14:06:23,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:23,566 INFO L93 Difference]: Finished difference Result 96 states and 110 transitions. [2022-11-23 14:06:23,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:06:23,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 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 [2022-11-23 14:06:23,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:23,568 INFO L225 Difference]: With dead ends: 96 [2022-11-23 14:06:23,568 INFO L226 Difference]: Without dead ends: 96 [2022-11-23 14:06:23,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:06:23,572 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 112 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:23,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 113 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:06:23,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-23 14:06:23,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2022-11-23 14:06:23,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 89 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:23,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 106 transitions. [2022-11-23 14:06:23,590 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 106 transitions. Word has length 13 [2022-11-23 14:06:23,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:23,590 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 106 transitions. [2022-11-23 14:06:23,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2022-11-23 14:06:23,590 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 106 transitions. [2022-11-23 14:06:23,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 14:06:23,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:23,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:06:23,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:06:23,592 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-23 14:06:23,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:23,592 INFO L85 PathProgramCache]: Analyzing trace with hash 147602317, now seen corresponding path program 1 times [2022-11-23 14:06:23,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:06:23,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874395574] [2022-11-23 14:06:23,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:23,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:06:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:23,776 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:06:23,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874395574] [2022-11-23 14:06:23,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874395574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:06:23,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:06:23,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 14:06:23,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559596628] [2022-11-23 14:06:23,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:06:23,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:06:23,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:06:23,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:06:23,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:06:23,783 INFO L87 Difference]: Start difference. First operand 90 states and 106 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2022-11-23 14:06:24,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:24,001 INFO L93 Difference]: Finished difference Result 103 states and 116 transitions. [2022-11-23 14:06:24,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:06:24,002 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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 [2022-11-23 14:06:24,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:24,006 INFO L225 Difference]: With dead ends: 103 [2022-11-23 14:06:24,006 INFO L226 Difference]: Without dead ends: 103 [2022-11-23 14:06:24,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:06:24,007 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 47 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:24,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 212 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:06:24,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-23 14:06:24,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 93. [2022-11-23 14:06:24,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 92 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:24,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 109 transitions. [2022-11-23 14:06:24,015 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 109 transitions. Word has length 14 [2022-11-23 14:06:24,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:24,015 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 109 transitions. [2022-11-23 14:06:24,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2022-11-23 14:06:24,015 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 109 transitions. [2022-11-23 14:06:24,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 14:06:24,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:24,016 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:06:24,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:06:24,025 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-23 14:06:24,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:24,025 INFO L85 PathProgramCache]: Analyzing trace with hash -902756227, now seen corresponding path program 1 times [2022-11-23 14:06:24,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:06:24,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111166206] [2022-11-23 14:06:24,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:24,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:06:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:24,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:24,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:06:24,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111166206] [2022-11-23 14:06:24,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111166206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:06:24,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:06:24,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:06:24,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427647823] [2022-11-23 14:06:24,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:06:24,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:06:24,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:06:24,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:06:24,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:06:24,134 INFO L87 Difference]: Start difference. First operand 93 states and 109 transitions. Second operand has 5 states, 4 states have (on average 3.5) 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) [2022-11-23 14:06:24,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:24,262 INFO L93 Difference]: Finished difference Result 100 states and 116 transitions. [2022-11-23 14:06:24,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:06:24,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) 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 [2022-11-23 14:06:24,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:24,264 INFO L225 Difference]: With dead ends: 100 [2022-11-23 14:06:24,264 INFO L226 Difference]: Without dead ends: 100 [2022-11-23 14:06:24,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:06:24,265 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 78 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:24,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 88 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:06:24,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-23 14:06:24,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 90. [2022-11-23 14:06:24,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 70 states have (on average 1.5142857142857142) internal successors, (106), 89 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:24,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 106 transitions. [2022-11-23 14:06:24,270 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 106 transitions. Word has length 14 [2022-11-23 14:06:24,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:24,270 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 106 transitions. [2022-11-23 14:06:24,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) 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) [2022-11-23 14:06:24,270 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 106 transitions. [2022-11-23 14:06:24,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 14:06:24,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:24,271 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:06:24,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 14:06:24,271 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-23 14:06:24,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:24,272 INFO L85 PathProgramCache]: Analyzing trace with hash -902756226, now seen corresponding path program 1 times [2022-11-23 14:06:24,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:06:24,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126418358] [2022-11-23 14:06:24,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:24,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:06:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:24,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:24,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:06:24,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126418358] [2022-11-23 14:06:24,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126418358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:06:24,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:06:24,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:06:24,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989165492] [2022-11-23 14:06:24,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:06:24,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:06:24,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:06:24,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:06:24,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:06:24,426 INFO L87 Difference]: Start difference. First operand 90 states and 106 transitions. Second operand has 5 states, 4 states have (on average 3.5) 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) [2022-11-23 14:06:24,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:24,581 INFO L93 Difference]: Finished difference Result 93 states and 106 transitions. [2022-11-23 14:06:24,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:06:24,582 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) 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 [2022-11-23 14:06:24,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:24,583 INFO L225 Difference]: With dead ends: 93 [2022-11-23 14:06:24,583 INFO L226 Difference]: Without dead ends: 93 [2022-11-23 14:06:24,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:06:24,584 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 55 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:24,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 114 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:06:24,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-23 14:06:24,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 79. [2022-11-23 14:06:24,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 64 states have (on average 1.453125) internal successors, (93), 78 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:24,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 93 transitions. [2022-11-23 14:06:24,601 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 93 transitions. Word has length 14 [2022-11-23 14:06:24,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:24,602 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 93 transitions. [2022-11-23 14:06:24,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) 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) [2022-11-23 14:06:24,602 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 93 transitions. [2022-11-23 14:06:24,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 14:06:24,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:24,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:06:24,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 14:06:24,604 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-23 14:06:24,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:24,605 INFO L85 PathProgramCache]: Analyzing trace with hash 278242960, now seen corresponding path program 1 times [2022-11-23 14:06:24,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:06:24,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127411890] [2022-11-23 14:06:24,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:24,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:06:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:24,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:24,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:06:24,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127411890] [2022-11-23 14:06:24,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127411890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:06:24,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:06:24,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:06:24,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198413438] [2022-11-23 14:06:24,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:06:24,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:06:24,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:06:24,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:06:24,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:06:24,693 INFO L87 Difference]: Start difference. First operand 79 states and 93 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:24,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:24,786 INFO L93 Difference]: Finished difference Result 89 states and 102 transitions. [2022-11-23 14:06:24,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:06:24,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-23 14:06:24,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:24,788 INFO L225 Difference]: With dead ends: 89 [2022-11-23 14:06:24,788 INFO L226 Difference]: Without dead ends: 79 [2022-11-23 14:06:24,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:06:24,789 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 15 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:24,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 121 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:06:24,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-23 14:06:24,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2022-11-23 14:06:24,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 61 states have (on average 1.459016393442623) internal successors, (89), 75 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:24,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 89 transitions. [2022-11-23 14:06:24,796 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 89 transitions. Word has length 15 [2022-11-23 14:06:24,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:24,797 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 89 transitions. [2022-11-23 14:06:24,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:24,797 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 89 transitions. [2022-11-23 14:06:24,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-23 14:06:24,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:24,801 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:06:24,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 14:06:24,802 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-23 14:06:24,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:24,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1411498456, now seen corresponding path program 1 times [2022-11-23 14:06:24,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:06:24,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522341271] [2022-11-23 14:06:24,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:24,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:06:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:25,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:25,181 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:06:25,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522341271] [2022-11-23 14:06:25,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522341271] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:06:25,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698344815] [2022-11-23 14:06:25,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:25,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:06:25,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:06:25,189 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:06:25,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:06:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:25,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-23 14:06:25,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:06:25,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:06:25,497 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-23 14:06:25,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-23 14:06:25,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:25,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-23 14:06:25,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:25,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-11-23 14:06:25,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-23 14:06:25,741 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 15 treesize of output 7 [2022-11-23 14:06:25,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:25,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:06:26,014 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:06:26,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 29 [2022-11-23 14:06:26,032 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-23 14:06:26,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2022-11-23 14:06:26,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-23 14:06:26,055 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-23 14:06:26,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-23 14:06:26,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:26,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698344815] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:06:26,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [756508796] [2022-11-23 14:06:26,156 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-23 14:06:26,156 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:06:26,160 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:06:26,168 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:06:26,169 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:06:26,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:26,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:26,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 14:06:26,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:06:26,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:06:26,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:26,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:06:26,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:26,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:26,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:26,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:26,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:26,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 14:06:26,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:26,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:26,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:26,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 14:06:26,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:26,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:26,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:26,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:26,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:26,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:26,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 14:06:26,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:26,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:26,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:26,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 14:06:26,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:26,895 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:06:26,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 260 treesize of output 242 [2022-11-23 14:06:26,928 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:06:26,977 INFO L321 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-23 14:06:26,977 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 3 new quantified variables, introduced 5 case distinctions, treesize of input 256 treesize of output 257 [2022-11-23 14:06:27,020 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:06:27,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 238 [2022-11-23 14:06:27,784 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:06:31,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [756508796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:06:31,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:06:31,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [10, 9, 9] total 34 [2022-11-23 14:06:31,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899218395] [2022-11-23 14:06:31,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:06:31,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 14:06:31,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:06:31,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 14:06:31,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=886, Unknown=4, NotChecked=0, Total=1122 [2022-11-23 14:06:31,894 INFO L87 Difference]: Start difference. First operand 76 states and 89 transitions. Second operand has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:32,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:32,878 INFO L93 Difference]: Finished difference Result 103 states and 121 transitions. [2022-11-23 14:06:32,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 14:06:32,879 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-23 14:06:32,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:32,880 INFO L225 Difference]: With dead ends: 103 [2022-11-23 14:06:32,880 INFO L226 Difference]: Without dead ends: 103 [2022-11-23 14:06:32,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=252, Invalid=1004, Unknown=4, NotChecked=0, Total=1260 [2022-11-23 14:06:32,881 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 33 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:32,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 93 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:06:32,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-23 14:06:32,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 93. [2022-11-23 14:06:32,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 78 states have (on average 1.3974358974358974) internal successors, (109), 92 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:32,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 109 transitions. [2022-11-23 14:06:32,885 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 109 transitions. Word has length 20 [2022-11-23 14:06:32,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:32,885 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 109 transitions. [2022-11-23 14:06:32,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:32,885 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 109 transitions. [2022-11-23 14:06:32,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-23 14:06:32,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:32,886 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] [2022-11-23 14:06:32,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:06:33,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:06:33,087 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-23 14:06:33,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:33,087 INFO L85 PathProgramCache]: Analyzing trace with hash 2138902324, now seen corresponding path program 1 times [2022-11-23 14:06:33,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:06:33,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554141848] [2022-11-23 14:06:33,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:33,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:06:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:33,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:33,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:06:33,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554141848] [2022-11-23 14:06:33,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554141848] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:06:33,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976689522] [2022-11-23 14:06:33,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:33,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:06:33,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:06:33,459 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:06:33,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:06:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:33,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-23 14:06:33,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:06:33,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:06:33,671 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-23 14:06:33,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-23 14:06:33,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:33,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-23 14:06:33,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:33,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-11-23 14:06:33,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-23 14:06:33,861 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 15 treesize of output 7 [2022-11-23 14:06:33,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:33,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:06:33,987 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_191 (Array Int Int))) (< (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) v_ArrVal_191) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 3)) is different from false [2022-11-23 14:06:34,122 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:06:34,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 29 [2022-11-23 14:06:34,136 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-23 14:06:34,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2022-11-23 14:06:34,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-23 14:06:34,157 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-23 14:06:34,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-23 14:06:34,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:34,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976689522] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:06:34,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [254141855] [2022-11-23 14:06:34,227 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-23 14:06:34,227 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:06:34,228 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:06:34,228 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:06:34,228 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:06:34,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:34,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:34,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 14:06:34,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:06:34,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:34,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:06:34,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:06:34,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:34,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:34,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:34,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:34,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:34,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 14:06:34,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:34,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:34,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:34,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:34,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 14:06:34,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:34,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:34,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:34,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:34,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:34,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 14:06:34,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:34,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:34,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:34,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 14:06:34,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:34,647 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:06:34,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 260 treesize of output 242 [2022-11-23 14:06:34,682 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:06:34,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 260 treesize of output 242 [2022-11-23 14:06:34,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:06:34,741 INFO L321 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-23 14:06:34,742 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 3 new quantified variables, introduced 5 case distinctions, treesize of input 256 treesize of output 257 [2022-11-23 14:06:35,154 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:06:39,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [254141855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:06:39,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:06:39,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11, 9, 10] total 39 [2022-11-23 14:06:39,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208655967] [2022-11-23 14:06:39,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:06:39,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 14:06:39,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:06:39,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 14:06:39,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1192, Unknown=6, NotChecked=72, Total=1482 [2022-11-23 14:06:39,175 INFO L87 Difference]: Start difference. First operand 93 states and 109 transitions. Second operand has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:39,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:39,924 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2022-11-23 14:06:39,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 14:06:39,925 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 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 23 [2022-11-23 14:06:39,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:39,926 INFO L225 Difference]: With dead ends: 101 [2022-11-23 14:06:39,926 INFO L226 Difference]: Without dead ends: 94 [2022-11-23 14:06:39,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=222, Invalid=1258, Unknown=6, NotChecked=74, Total=1560 [2022-11-23 14:06:39,927 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 30 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:39,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 95 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:06:39,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-23 14:06:39,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2022-11-23 14:06:39,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 78 states have (on average 1.3846153846153846) internal successors, (108), 92 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) [2022-11-23 14:06:39,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 108 transitions. [2022-11-23 14:06:39,931 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 108 transitions. Word has length 23 [2022-11-23 14:06:39,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:39,931 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 108 transitions. [2022-11-23 14:06:39,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:39,932 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 108 transitions. [2022-11-23 14:06:39,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-23 14:06:39,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:39,932 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] [2022-11-23 14:06:39,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-23 14:06:40,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-23 14:06:40,138 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-23 14:06:40,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:40,138 INFO L85 PathProgramCache]: Analyzing trace with hash 192746989, now seen corresponding path program 1 times [2022-11-23 14:06:40,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:06:40,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236990529] [2022-11-23 14:06:40,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:40,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:06:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:40,185 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 14:06:40,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:06:40,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236990529] [2022-11-23 14:06:40,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236990529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:06:40,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:06:40,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:06:40,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061965994] [2022-11-23 14:06:40,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:06:40,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:06:40,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:06:40,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:06:40,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:06:40,189 INFO L87 Difference]: Start difference. First operand 93 states and 108 transitions. Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:40,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:40,228 INFO L93 Difference]: Finished difference Result 91 states and 106 transitions. [2022-11-23 14:06:40,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:06:40,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 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 24 [2022-11-23 14:06:40,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:40,230 INFO L225 Difference]: With dead ends: 91 [2022-11-23 14:06:40,230 INFO L226 Difference]: Without dead ends: 91 [2022-11-23 14:06:40,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:06:40,231 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 19 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:40,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 46 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:06:40,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-23 14:06:40,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-11-23 14:06:40,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 78 states have (on average 1.358974358974359) internal successors, (106), 90 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:40,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 106 transitions. [2022-11-23 14:06:40,234 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 106 transitions. Word has length 24 [2022-11-23 14:06:40,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:40,235 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 106 transitions. [2022-11-23 14:06:40,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:40,235 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 106 transitions. [2022-11-23 14:06:40,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-23 14:06:40,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:40,237 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] [2022-11-23 14:06:40,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 14:06:40,237 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-23 14:06:40,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:40,238 INFO L85 PathProgramCache]: Analyzing trace with hash 546263767, now seen corresponding path program 1 times [2022-11-23 14:06:40,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:06:40,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812542166] [2022-11-23 14:06:40,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:40,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:06:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:40,710 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:40,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:06:40,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812542166] [2022-11-23 14:06:40,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812542166] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:06:40,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64148456] [2022-11-23 14:06:40,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:40,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:06:40,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:06:40,713 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:06:40,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:06:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:40,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-23 14:06:40,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:06:40,889 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-23 14:06:40,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-23 14:06:40,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:40,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:40,987 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:06:40,988 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 52 treesize of output 49 [2022-11-23 14:06:40,991 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 34 treesize of output 36 [2022-11-23 14:06:40,994 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 23 treesize of output 15 [2022-11-23 14:06:41,066 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 [2022-11-23 14:06:41,069 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 19 treesize of output 11 [2022-11-23 14:06:41,075 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 15 treesize of output 7 [2022-11-23 14:06:41,077 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:41,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:06:41,112 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 79 treesize of output 57 [2022-11-23 14:06:41,179 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) .cse2)) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (and (forall ((v_ArrVal_264 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_264) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1) .cse0)) (forall ((v_ArrVal_263 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_263) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base|) .cse2)))))) is different from false [2022-11-23 14:06:41,190 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:06:41,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-23 14:06:41,199 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:06:41,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2022-11-23 14:06:41,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-23 14:06:41,216 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-23 14:06:41,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2022-11-23 14:06:41,333 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:06:41,334 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 [2022-11-23 14:06:41,442 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:41,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64148456] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:06:41,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1896371567] [2022-11-23 14:06:41,448 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-23 14:06:41,448 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:06:41,448 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:06:41,448 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:06:41,449 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:06:41,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:41,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:41,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 14:06:41,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:41,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:06:41,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:06:41,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:06:41,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:41,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:41,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:41,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:41,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:41,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 14:06:41,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:41,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:41,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 14:06:41,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:41,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:41,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:41,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:41,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:41,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:41,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:41,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 14:06:41,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:41,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:41,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:41,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:41,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 14:06:41,871 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:06:41,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 260 treesize of output 242 [2022-11-23 14:06:41,894 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:06:41,947 INFO L321 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-23 14:06:41,947 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 3 new quantified variables, introduced 5 case distinctions, treesize of input 256 treesize of output 257 [2022-11-23 14:06:41,989 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:06:41,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 238 [2022-11-23 14:06:42,765 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:06:45,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1896371567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:06:45,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:06:45,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [11, 10, 10] total 32 [2022-11-23 14:06:45,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247175401] [2022-11-23 14:06:45,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:06:45,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 14:06:45,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:06:45,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 14:06:45,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=780, Unknown=3, NotChecked=60, Total=1056 [2022-11-23 14:06:45,796 INFO L87 Difference]: Start difference. First operand 91 states and 106 transitions. Second operand has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:46,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:46,347 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2022-11-23 14:06:46,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 14:06:46,348 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 13 states have internal predecessors, (23), 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 [2022-11-23 14:06:46,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:46,349 INFO L225 Difference]: With dead ends: 77 [2022-11-23 14:06:46,349 INFO L226 Difference]: Without dead ends: 77 [2022-11-23 14:06:46,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 52 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=228, Invalid=829, Unknown=3, NotChecked=62, Total=1122 [2022-11-23 14:06:46,350 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 58 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:46,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 53 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:06:46,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-23 14:06:46,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2022-11-23 14:06:46,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 62 states have (on average 1.2580645161290323) internal successors, (78), 70 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:46,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2022-11-23 14:06:46,352 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 26 [2022-11-23 14:06:46,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:46,352 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2022-11-23 14:06:46,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:46,353 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2022-11-23 14:06:46,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-23 14:06:46,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:46,353 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 14:06:46,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:06:46,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-23 14:06:46,554 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-23 14:06:46,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:46,555 INFO L85 PathProgramCache]: Analyzing trace with hash -294744398, now seen corresponding path program 1 times [2022-11-23 14:06:46,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:06:46,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102016834] [2022-11-23 14:06:46,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:46,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:06:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:46,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 14:06:46,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:06:46,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102016834] [2022-11-23 14:06:46,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102016834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:06:46,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:06:46,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:06:46,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704552753] [2022-11-23 14:06:46,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:06:46,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:06:46,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:06:46,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:06:46,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:06:46,635 INFO L87 Difference]: Start difference. First operand 71 states and 78 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:46,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:46,717 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2022-11-23 14:06:46,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:06:46,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 [2022-11-23 14:06:46,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:46,718 INFO L225 Difference]: With dead ends: 80 [2022-11-23 14:06:46,718 INFO L226 Difference]: Without dead ends: 80 [2022-11-23 14:06:46,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:06:46,720 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 62 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:46,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 54 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:06:46,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-23 14:06:46,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 72. [2022-11-23 14:06:46,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 63 states have (on average 1.253968253968254) internal successors, (79), 71 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:46,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2022-11-23 14:06:46,723 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 28 [2022-11-23 14:06:46,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:46,723 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2022-11-23 14:06:46,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:46,724 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2022-11-23 14:06:46,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-23 14:06:46,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:46,726 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 14:06:46,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 14:06:46,727 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-23 14:06:46,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:46,727 INFO L85 PathProgramCache]: Analyzing trace with hash -549603317, now seen corresponding path program 1 times [2022-11-23 14:06:46,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:06:46,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826849793] [2022-11-23 14:06:46,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:46,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:06:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:46,913 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:06:46,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:06:46,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826849793] [2022-11-23 14:06:46,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826849793] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:06:46,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190407398] [2022-11-23 14:06:46,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:46,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:06:46,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:06:46,915 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:06:46,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:06:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:47,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-23 14:06:47,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:06:47,126 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:06:47,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-23 14:06:47,173 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:06:47,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:06:47,285 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-23 14:06:47,286 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 17 treesize of output 16 [2022-11-23 14:06:47,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:06:47,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190407398] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:06:47,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1642218535] [2022-11-23 14:06:47,320 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-23 14:06:47,320 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:06:47,321 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:06:47,321 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:06:47,321 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:06:47,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:47,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:47,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 14:06:47,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:47,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:06:47,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:06:47,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:06:47,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:47,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:47,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:47,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:47,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:47,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 14:06:47,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:47,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:47,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 14:06:47,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:47,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:47,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:47,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:47,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:47,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:47,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 14:06:47,688 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:06:47,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 260 treesize of output 242 [2022-11-23 14:06:47,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:06:47,751 INFO L321 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-23 14:06:47,752 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 3 new quantified variables, introduced 5 case distinctions, treesize of input 256 treesize of output 257 [2022-11-23 14:06:47,780 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:06:47,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 238 [2022-11-23 14:06:48,173 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 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-23 14:06:48,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:48,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:06:48,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:06:48,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:06:48,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:48,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:48,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:48,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:48,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:48,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 14:06:48,318 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:06:52,260 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3679#(and (or (and (= |ULTIMATE.start_main_~flag~0#1| 1) (= |#NULL.base| 0)) (and (= |ULTIMATE.start_main_~t~0#1.offset| 0) (= |#NULL.base| 0))) (< |ULTIMATE.start_main_~p~0#1.base| |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~flag~0#1| 1) (not (= |ULTIMATE.start_main_old_#valid#1| |#valid|)) (<= 0 |ULTIMATE.start_main_~flag~0#1|) (<= |#NULL.offset| 0) (= (select |#valid| |ULTIMATE.start_main_~p~0#1.base|) 0) (= |ULTIMATE.start_main_~a~0#1.offset| |ULTIMATE.start_main_~p~0#1.offset|) (<= (+ |ULTIMATE.start_main_~p~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~p~0#1.base|)) (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 3) (= |ULTIMATE.start_main_~a~0#1.base| |ULTIMATE.start_main_~p~0#1.base|) (= |ULTIMATE.start_main_~p~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#res#1| 0))' at error location [2022-11-23 14:06:52,261 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:06:52,261 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:06:52,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2022-11-23 14:06:52,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936963069] [2022-11-23 14:06:52,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:06:52,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-23 14:06:52,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:06:52,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-23 14:06:52,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1102, Unknown=0, NotChecked=0, Total=1332 [2022-11-23 14:06:52,263 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:52,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:52,772 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2022-11-23 14:06:52,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 14:06:52,773 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 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 [2022-11-23 14:06:52,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:52,773 INFO L225 Difference]: With dead ends: 92 [2022-11-23 14:06:52,773 INFO L226 Difference]: Without dead ends: 92 [2022-11-23 14:06:52,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 58 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=394, Invalid=1768, Unknown=0, NotChecked=0, Total=2162 [2022-11-23 14:06:52,775 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 206 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:52,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 243 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:06:52,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-23 14:06:52,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 72. [2022-11-23 14:06:52,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 71 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:52,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2022-11-23 14:06:52,777 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 29 [2022-11-23 14:06:52,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:52,777 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2022-11-23 14:06:52,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:52,778 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2022-11-23 14:06:52,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-23 14:06:52,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:52,778 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 14:06:52,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 14:06:52,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-23 14:06:52,984 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-23 14:06:52,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:52,985 INFO L85 PathProgramCache]: Analyzing trace with hash -547141591, now seen corresponding path program 1 times [2022-11-23 14:06:52,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:06:52,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441509623] [2022-11-23 14:06:52,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:52,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:06:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:53,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:06:53,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:06:53,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441509623] [2022-11-23 14:06:53,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441509623] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:06:53,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681450736] [2022-11-23 14:06:53,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:53,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:06:53,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:06:53,066 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:06:53,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 14:06:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:53,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 14:06:53,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:06:53,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:06:53,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:06:53,257 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-23 14:06:53,258 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 12 treesize of output 11 [2022-11-23 14:06:53,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:06:53,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681450736] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:06:53,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [276432255] [2022-11-23 14:06:53,271 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-23 14:06:53,272 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:06:53,272 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:06:53,272 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:06:53,273 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:06:53,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:53,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:53,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 14:06:53,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:06:53,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:06:53,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:53,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:06:53,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:53,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:53,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:53,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:53,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:53,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 14:06:53,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:53,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:53,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 14:06:53,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:53,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:53,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:53,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:53,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:53,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 14:06:53,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:53,632 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:06:53,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 260 treesize of output 242 [2022-11-23 14:06:53,662 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:06:53,706 INFO L321 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-23 14:06:53,706 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 3 new quantified variables, introduced 5 case distinctions, treesize of input 256 treesize of output 257 [2022-11-23 14:06:53,744 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:06:53,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 238 [2022-11-23 14:06:54,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:06:54,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:54,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:06:54,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:06:54,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:54,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:54,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:54,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:54,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:06:54,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 14:06:54,570 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:06:57,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [276432255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:06:57,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:06:57,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [6, 5, 5] total 23 [2022-11-23 14:06:57,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287764973] [2022-11-23 14:06:57,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:06:57,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-23 14:06:57,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:06:57,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-23 14:06:57,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2022-11-23 14:06:57,694 INFO L87 Difference]: Start difference. First operand 72 states and 78 transitions. Second operand has 19 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:58,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:58,513 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2022-11-23 14:06:58,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-23 14:06:58,513 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.5) internal successors, (27), 18 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 29 [2022-11-23 14:06:58,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:58,514 INFO L225 Difference]: With dead ends: 77 [2022-11-23 14:06:58,514 INFO L226 Difference]: Without dead ends: 77 [2022-11-23 14:06:58,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 64 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2022-11-23 14:06:58,515 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 84 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:58,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 66 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:06:58,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-23 14:06:58,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2022-11-23 14:06:58,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 64 states have (on average 1.234375) internal successors, (79), 72 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:58,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2022-11-23 14:06:58,524 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 29 [2022-11-23 14:06:58,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:58,525 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2022-11-23 14:06:58,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:58,525 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2022-11-23 14:06:58,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-23 14:06:58,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:58,527 INFO L195 NwaCegarLoop]: trace histogram [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, 1] [2022-11-23 14:06:58,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 14:06:58,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-23 14:06:58,732 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-23 14:06:58,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:58,732 INFO L85 PathProgramCache]: Analyzing trace with hash 218480003, now seen corresponding path program 1 times [2022-11-23 14:06:58,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:06:58,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281216726] [2022-11-23 14:06:58,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:58,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:06:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:59,270 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:59,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:06:59,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281216726] [2022-11-23 14:06:59,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281216726] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:06:59,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590423763] [2022-11-23 14:06:59,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:59,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:06:59,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:06:59,273 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:06:59,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 14:06:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:59,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-23 14:06:59,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:06:59,445 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 14:06:59,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-23 14:06:59,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:06:59,595 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:06:59,596 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 [2022-11-23 14:06:59,786 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:06:59,786 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 27 treesize of output 13 [2022-11-23 14:06:59,826 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 0 case distinctions, treesize of input 17 treesize of output 17 [2022-11-23 14:06:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:06:59,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:07:00,399 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:07:00,399 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 23 treesize of output 24 [2022-11-23 14:07:00,414 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:07:00,414 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 39 treesize of output 38 [2022-11-23 14:07:00,419 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 22 treesize of output 18 [2022-11-23 14:07:00,467 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:07:00,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-11-23 14:07:00,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:07:00,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:00,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:00,477 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 22 treesize of output 10 [2022-11-23 14:07:00,704 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:07:00,704 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 59 treesize of output 129 [2022-11-23 14:07:00,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:07:00,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590423763] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:07:00,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1406584279] [2022-11-23 14:07:00,952 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-23 14:07:00,953 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:07:00,953 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:07:00,953 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:07:00,953 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:07:00,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:00,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:00,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 14:07:01,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:07:01,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:01,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:07:01,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:07:01,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:01,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:01,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:01,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:01,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:01,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 14:07:01,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:01,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:01,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:01,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:01,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 14:07:01,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:01,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:01,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 14:07:01,182 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 13 treesize of output 9 [2022-11-23 14:07:01,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:01,305 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:07:01,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 260 treesize of output 242 [2022-11-23 14:07:01,340 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:07:01,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 260 treesize of output 242 [2022-11-23 14:07:01,357 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:07:01,397 INFO L321 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-23 14:07:01,397 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 3 new quantified variables, introduced 5 case distinctions, treesize of input 256 treesize of output 257 [2022-11-23 14:07:01,780 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 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-23 14:07:01,864 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-11-23 14:07:01,864 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 21 treesize of output 33 [2022-11-23 14:07:01,999 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-11-23 14:07:02,000 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 21 treesize of output 33 [2022-11-23 14:07:02,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:07:02,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:07:02,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:02,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:07:02,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:02,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:02,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:02,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:02,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:02,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 14:07:02,153 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:07:06,225 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4438#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= |ULTIMATE.start_main_~flag~0#1| 1) (<= 0 |ULTIMATE.start_main_~flag~0#1|) (not (= (select |#valid| |ULTIMATE.start_main_~p~0#1.base|) 1)) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:07:06,225 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:07:06,225 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:07:06,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 32 [2022-11-23 14:07:06,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877526751] [2022-11-23 14:07:06,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:07:06,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-23 14:07:06,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:07:06,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-23 14:07:06,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=2330, Unknown=4, NotChecked=0, Total=2756 [2022-11-23 14:07:06,228 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand has 34 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 33 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:07:07,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:07:07,283 INFO L93 Difference]: Finished difference Result 139 states and 150 transitions. [2022-11-23 14:07:07,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 14:07:07,283 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 33 states have internal predecessors, (81), 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 30 [2022-11-23 14:07:07,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:07:07,284 INFO L225 Difference]: With dead ends: 139 [2022-11-23 14:07:07,284 INFO L226 Difference]: Without dead ends: 139 [2022-11-23 14:07:07,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1789 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=650, Invalid=3506, Unknown=4, NotChecked=0, Total=4160 [2022-11-23 14:07:07,286 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 293 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:07:07,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 344 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:07:07,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-23 14:07:07,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 97. [2022-11-23 14:07:07,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 88 states have (on average 1.1931818181818181) internal successors, (105), 96 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:07:07,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions. [2022-11-23 14:07:07,289 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 30 [2022-11-23 14:07:07,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:07:07,289 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 105 transitions. [2022-11-23 14:07:07,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 33 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:07:07,289 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions. [2022-11-23 14:07:07,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-23 14:07:07,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:07:07,290 INFO L195 NwaCegarLoop]: trace histogram [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, 1] [2022-11-23 14:07:07,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 14:07:07,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:07:07,496 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-23 14:07:07,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:07:07,496 INFO L85 PathProgramCache]: Analyzing trace with hash 218480004, now seen corresponding path program 1 times [2022-11-23 14:07:07,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:07:07,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713377953] [2022-11-23 14:07:07,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:07,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:07:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:07:08,017 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:07:08,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:07:08,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713377953] [2022-11-23 14:07:08,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713377953] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:07:08,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048551896] [2022-11-23 14:07:08,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:08,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:07:08,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:07:08,019 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:07:08,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 14:07:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:07:08,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-23 14:07:08,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:07:08,185 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-23 14:07:08,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-23 14:07:08,196 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 [2022-11-23 14:07:08,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:08,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:08,354 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:07:08,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2022-11-23 14:07:08,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-23 14:07:08,518 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 [2022-11-23 14:07:08,523 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 [2022-11-23 14:07:08,547 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:07:08,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:07:08,691 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (and (forall ((v_ArrVal_481 (Array Int Int)) (v_ArrVal_480 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_480) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_481) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)))) (forall ((v_ArrVal_480 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_480) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))))) is different from false [2022-11-23 14:07:08,714 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (and (forall ((v_ArrVal_481 (Array Int Int)) (v_ArrVal_480 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_480) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_481) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1)))) (forall ((v_ArrVal_480 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_480) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))))) is different from false [2022-11-23 14:07:08,722 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:07:08,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-23 14:07:08,730 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:07:08,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2022-11-23 14:07:08,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-23 14:07:08,752 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:07:08,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2022-11-23 14:07:08,759 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:07:08,759 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 35 treesize of output 36 [2022-11-23 14:07:08,761 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:07:08,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:08,765 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 33 treesize of output 21 [2022-11-23 14:07:08,767 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:07:08,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:08,770 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 24 treesize of output 12 [2022-11-23 14:07:08,886 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:07:08,886 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 [2022-11-23 14:07:09,075 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2022-11-23 14:07:09,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048551896] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:07:09,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1811179124] [2022-11-23 14:07:09,080 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-23 14:07:09,080 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:07:09,081 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:07:09,081 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:07:09,081 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:07:09,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:09,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:09,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 14:07:09,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:09,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:07:09,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:07:09,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:07:09,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:09,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:09,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:09,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:09,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:09,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 14:07:09,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:09,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:09,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:09,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 14:07:09,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:09,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:09,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:09,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:09,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 14:07:09,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:09,431 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:07:09,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 260 treesize of output 242 [2022-11-23 14:07:09,457 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:07:09,501 INFO L321 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-23 14:07:09,502 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 3 new quantified variables, introduced 5 case distinctions, treesize of input 256 treesize of output 257 [2022-11-23 14:07:09,532 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:07:09,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 238 [2022-11-23 14:07:10,205 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 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-23 14:07:10,279 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-11-23 14:07:10,279 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 21 treesize of output 33 [2022-11-23 14:07:10,382 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-11-23 14:07:10,382 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 21 treesize of output 33 [2022-11-23 14:07:10,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:10,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:07:10,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:07:10,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:07:10,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:10,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:10,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:10,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:10,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:10,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 14:07:10,554 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:07:14,158 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4918#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= |ULTIMATE.start_main_~flag~0#1| 1) (<= 0 |ULTIMATE.start_main_~flag~0#1|) (or (not (<= 0 |ULTIMATE.start_main_~p~0#1.offset|)) (not (<= (+ |ULTIMATE.start_main_~p~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~p~0#1.base|)))) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:07:14,158 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:07:14,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:07:14,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 26 [2022-11-23 14:07:14,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316776508] [2022-11-23 14:07:14,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:07:14,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-23 14:07:14,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:07:14,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-23 14:07:14,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=1500, Unknown=2, NotChecked=166, Total=1980 [2022-11-23 14:07:14,161 INFO L87 Difference]: Start difference. First operand 97 states and 105 transitions. Second operand has 27 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 27 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:07:16,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:07:16,877 INFO L93 Difference]: Finished difference Result 149 states and 159 transitions. [2022-11-23 14:07:16,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-23 14:07:16,878 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 27 states have internal predecessors, (81), 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 30 [2022-11-23 14:07:16,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:07:16,879 INFO L225 Difference]: With dead ends: 149 [2022-11-23 14:07:16,879 INFO L226 Difference]: Without dead ends: 149 [2022-11-23 14:07:16,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 50 SyntacticMatches, 6 SemanticMatches, 64 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 1589 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=692, Invalid=3346, Unknown=2, NotChecked=250, Total=4290 [2022-11-23 14:07:16,881 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 235 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 64 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:07:16,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 317 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 463 Invalid, 1 Unknown, 150 Unchecked, 0.4s Time] [2022-11-23 14:07:16,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-11-23 14:07:16,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 100. [2022-11-23 14:07:16,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 91 states have (on average 1.1868131868131868) internal successors, (108), 99 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) [2022-11-23 14:07:16,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 108 transitions. [2022-11-23 14:07:16,884 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 108 transitions. Word has length 30 [2022-11-23 14:07:16,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:07:16,885 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 108 transitions. [2022-11-23 14:07:16,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 27 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:07:16,885 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 108 transitions. [2022-11-23 14:07:16,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-23 14:07:16,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:07:16,886 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:07:16,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 14:07:17,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:07:17,093 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-23 14:07:17,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:07:17,094 INFO L85 PathProgramCache]: Analyzing trace with hash 487758996, now seen corresponding path program 1 times [2022-11-23 14:07:17,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:07:17,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399395459] [2022-11-23 14:07:17,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:17,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:07:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:07:17,572 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:07:17,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:07:17,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399395459] [2022-11-23 14:07:17,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399395459] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:07:17,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112646506] [2022-11-23 14:07:17,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:17,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:07:17,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:07:17,577 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:07:17,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 14:07:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:07:17,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-23 14:07:17,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:07:17,757 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 11 treesize of output 7 [2022-11-23 14:07:17,802 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-23 14:07:17,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-23 14:07:17,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:17,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:17,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-23 14:07:17,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-11-23 14:07:17,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-23 14:07:18,009 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-23 14:07:18,009 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 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-23 14:07:18,058 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 13 treesize of output 9 [2022-11-23 14:07:18,064 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 14 treesize of output 16 [2022-11-23 14:07:18,106 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 20 treesize of output 8 [2022-11-23 14:07:18,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-23 14:07:18,186 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 15 treesize of output 7 [2022-11-23 14:07:18,207 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:07:18,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:07:18,283 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_566 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_566) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 3)) is different from false [2022-11-23 14:07:18,481 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~t~0#1.base_23| Int) (v_ArrVal_564 (Array Int Int)) (v_ArrVal_566 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_23|) 0)) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_564) |v_ULTIMATE.start_main_~t~0#1.base_23| v_ArrVal_566) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 3))) is different from false [2022-11-23 14:07:18,583 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-23 14:07:18,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-23 14:07:18,822 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:07:18,822 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 26 treesize of output 32 [2022-11-23 14:07:18,837 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-23 14:07:18,838 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 1 case distinctions, treesize of input 122 treesize of output 117 [2022-11-23 14:07:18,845 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 [2022-11-23 14:07:18,851 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 102 treesize of output 94 [2022-11-23 14:07:18,865 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-23 14:07:18,865 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 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-23 14:07:20,679 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-11-23 14:07:20,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112646506] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:07:20,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1403747268] [2022-11-23 14:07:20,681 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-11-23 14:07:20,681 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:07:20,682 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:07:20,682 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:07:20,682 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:07:20,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:20,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:20,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 14:07:20,742 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 15 treesize of output 1 [2022-11-23 14:07:20,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:07:20,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:20,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:07:20,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:20,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:20,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:20,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:20,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:20,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 14:07:20,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:20,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:20,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 14:07:20,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:20,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:20,919 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:07:20,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 16 [2022-11-23 14:07:20,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:20,931 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 34 treesize of output 16 [2022-11-23 14:07:20,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:20,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:20,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:20,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-23 14:07:21,083 INFO L321 Elim1Store]: treesize reduction 138, result has 17.9 percent of original size [2022-11-23 14:07:21,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 286 treesize of output 294 [2022-11-23 14:07:21,247 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-23 14:07:21,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 371 treesize of output 320 [2022-11-23 14:07:21,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:21,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:21,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:21,268 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:07:21,277 INFO L321 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-11-23 14:07:21,277 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 317 treesize of output 298 [2022-11-23 14:07:21,319 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-23 14:07:21,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 311 treesize of output 308 [2022-11-23 14:07:21,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:21,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:21,766 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-23 14:07:21,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 46 [2022-11-23 14:07:21,796 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:07:21,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 16 [2022-11-23 14:07:21,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:21,808 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2022-11-23 14:07:21,855 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:07:21,892 INFO L321 Elim1Store]: treesize reduction 94, result has 21.0 percent of original size [2022-11-23 14:07:21,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 245 treesize of output 149 [2022-11-23 14:07:21,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:21,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:21,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:21,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:21,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:21,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:21,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 60 [2022-11-23 14:07:21,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:21,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:21,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:21,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 78 [2022-11-23 14:07:21,991 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 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-23 14:07:21,999 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 [2022-11-23 14:07:22,013 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 [2022-11-23 14:07:22,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:22,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:22,108 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:07:22,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 16 [2022-11-23 14:07:22,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:22,118 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 34 treesize of output 16 [2022-11-23 14:07:22,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:07:22,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:07:22,188 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:07:22,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 16 [2022-11-23 14:07:22,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:22,199 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 34 treesize of output 16 [2022-11-23 14:07:22,229 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 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-23 14:07:22,235 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 [2022-11-23 14:07:22,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:22,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:22,268 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 [2022-11-23 14:07:22,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:07:22,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:07:22,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:07:22,474 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-23 14:07:22,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 21 [2022-11-23 14:07:22,540 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:07:24,818 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5444#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (< |ULTIMATE.start_main_~p~0#1.base| |#StackHeapBarrier|) (not (= |ULTIMATE.start_main_old_#valid#1| |#valid|)) (= (select |#valid| |ULTIMATE.start_main_~a~0#1.base|) 0) (<= (+ |ULTIMATE.start_main_~p~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~p~0#1.base|)) (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 3) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~a~0#1.base| |ULTIMATE.start_main_~p~0#1.base|) (= |ULTIMATE.start_main_~p~0#1.offset| 0) (= |ULTIMATE.start_main_~flag~0#1| 1) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#res#1| 0) (= |#NULL.base| 0))' at error location [2022-11-23 14:07:24,818 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:07:24,818 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:07:24,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 14] total 37 [2022-11-23 14:07:24,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512796068] [2022-11-23 14:07:24,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:07:24,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-23 14:07:24,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:07:24,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-23 14:07:24,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=2181, Unknown=26, NotChecked=194, Total=2652 [2022-11-23 14:07:24,820 INFO L87 Difference]: Start difference. First operand 100 states and 108 transitions. Second operand has 37 states, 37 states have (on average 2.2432432432432434) internal successors, (83), 37 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) [2022-11-23 14:07:27,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:07:27,996 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2022-11-23 14:07:27,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 14:07:27,996 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.2432432432432434) internal successors, (83), 37 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 [2022-11-23 14:07:27,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:07:27,997 INFO L225 Difference]: With dead ends: 95 [2022-11-23 14:07:27,997 INFO L226 Difference]: Without dead ends: 95 [2022-11-23 14:07:27,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 63 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=476, Invalid=3411, Unknown=27, NotChecked=246, Total=4160 [2022-11-23 14:07:27,998 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 138 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 58 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:07:27,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 407 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 604 Invalid, 6 Unknown, 97 Unchecked, 0.5s Time] [2022-11-23 14:07:27,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-23 14:07:28,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 84. [2022-11-23 14:07:28,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 75 states have (on average 1.1866666666666668) internal successors, (89), 83 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:07:28,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2022-11-23 14:07:28,001 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 31 [2022-11-23 14:07:28,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:07:28,001 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2022-11-23 14:07:28,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.2432432432432434) internal successors, (83), 37 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) [2022-11-23 14:07:28,001 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2022-11-23 14:07:28,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-23 14:07:28,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:07:28,002 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, 1, 1] [2022-11-23 14:07:28,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 14:07:28,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-23 14:07:28,202 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-23 14:07:28,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:07:28,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1862398896, now seen corresponding path program 1 times [2022-11-23 14:07:28,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:07:28,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438380293] [2022-11-23 14:07:28,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:28,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:07:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:07:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:07:28,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:07:28,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438380293] [2022-11-23 14:07:28,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438380293] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:07:28,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522459341] [2022-11-23 14:07:28,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:28,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:07:28,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:07:28,681 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:07:28,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 14:07:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:07:28,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 14:07:28,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:07:28,870 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-23 14:07:28,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-23 14:07:28,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:28,988 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:07:28,989 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 [2022-11-23 14:07:29,122 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 [2022-11-23 14:07:29,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:07:29,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:07:29,219 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_615 (Array Int Int))) (< (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_615) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) |c_#StackHeapBarrier|)) is different from false [2022-11-23 14:07:29,234 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_615 (Array Int Int))) (< (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) v_ArrVal_615) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) |c_#StackHeapBarrier|)) is different from false [2022-11-23 14:07:29,241 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:07:29,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-23 14:07:29,258 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:07:29,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2022-11-23 14:07:29,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-23 14:07:29,397 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:07:29,397 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 [2022-11-23 14:07:29,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2022-11-23 14:07:29,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522459341] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:07:29,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [474350760] [2022-11-23 14:07:29,566 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-11-23 14:07:29,567 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:07:29,567 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:07:29,567 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:07:29,567 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:07:29,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:29,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:29,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 14:07:29,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:29,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:07:29,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:07:29,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:07:29,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:29,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:29,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:29,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:29,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:29,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 14:07:29,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:29,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:29,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:29,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 14:07:29,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:29,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:29,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:29,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 14:07:29,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:29,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:29,903 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:07:29,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 260 treesize of output 242 [2022-11-23 14:07:29,925 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:07:29,975 INFO L321 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-23 14:07:29,976 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 3 new quantified variables, introduced 5 case distinctions, treesize of input 256 treesize of output 257 [2022-11-23 14:07:30,009 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:07:30,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 238 [2022-11-23 14:07:30,711 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2022-11-23 14:07:30,778 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-11-23 14:07:30,779 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 21 treesize of output 33 [2022-11-23 14:07:30,883 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-11-23 14:07:30,883 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 21 treesize of output 33 [2022-11-23 14:07:31,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:07:31,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:07:31,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:31,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:07:31,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:31,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:31,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:31,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:31,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:31,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 14:07:31,056 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:07:35,008 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5881#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= |ULTIMATE.start_main_~flag~0#1| 1) (<= 0 |ULTIMATE.start_main_~flag~0#1|) (not (< |ULTIMATE.start_main_~p~0#1.base| |#StackHeapBarrier|)) (<= (+ |ULTIMATE.start_main_~p~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~p~0#1.base|)) (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 3) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~p~0#1.offset| 0) (= (select |#valid| |ULTIMATE.start_main_~p~0#1.base|) 1) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:07:35,008 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:07:35,008 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:07:35,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 22 [2022-11-23 14:07:35,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736675676] [2022-11-23 14:07:35,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:07:35,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-23 14:07:35,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:07:35,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-23 14:07:35,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=1366, Unknown=2, NotChecked=158, Total=1806 [2022-11-23 14:07:35,010 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand has 23 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 23 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:07:35,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:07:35,702 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2022-11-23 14:07:35,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-23 14:07:35,705 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 23 states have internal predecessors, (73), 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 33 [2022-11-23 14:07:35,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:07:35,706 INFO L225 Difference]: With dead ends: 129 [2022-11-23 14:07:35,706 INFO L226 Difference]: Without dead ends: 129 [2022-11-23 14:07:35,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 59 SyntacticMatches, 10 SemanticMatches, 50 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=425, Invalid=2030, Unknown=3, NotChecked=194, Total=2652 [2022-11-23 14:07:35,707 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 228 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 49 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 215 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:07:35,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 226 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 334 Invalid, 1 Unknown, 215 Unchecked, 0.3s Time] [2022-11-23 14:07:35,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-23 14:07:35,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 85. [2022-11-23 14:07:35,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 76 states have (on average 1.1842105263157894) internal successors, (90), 84 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:07:35,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2022-11-23 14:07:35,710 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 33 [2022-11-23 14:07:35,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:07:35,710 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2022-11-23 14:07:35,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 23 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:07:35,711 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2022-11-23 14:07:35,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-23 14:07:35,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:07:35,711 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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] [2022-11-23 14:07:35,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 14:07:35,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-23 14:07:35,923 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-23 14:07:35,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:07:35,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1862401458, now seen corresponding path program 1 times [2022-11-23 14:07:35,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:07:35,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40625796] [2022-11-23 14:07:35,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:35,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:07:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:07:36,455 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:07:36,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:07:36,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40625796] [2022-11-23 14:07:36,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40625796] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:07:36,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586721083] [2022-11-23 14:07:36,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:36,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:07:36,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:07:36,457 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:07:36,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 14:07:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:07:36,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-23 14:07:36,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:07:36,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 14:07:36,662 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-23 14:07:36,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-23 14:07:36,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:36,797 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:07:36,797 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 [2022-11-23 14:07:36,920 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 [2022-11-23 14:07:36,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:36,999 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:07:37,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:07:37,217 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:07:37,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-11-23 14:07:37,226 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:07:37,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 39 [2022-11-23 14:07:37,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-11-23 14:07:37,343 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 18 treesize of output 16 [2022-11-23 14:07:37,430 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:07:37,431 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 [2022-11-23 14:07:37,527 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:07:37,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586721083] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:07:37,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [394281889] [2022-11-23 14:07:37,529 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-23 14:07:37,529 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:07:37,529 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:07:37,530 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:07:37,530 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:07:37,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:37,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:37,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 14:07:37,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:37,588 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:07:37,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:07:37,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:07:37,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:37,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:37,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:37,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:37,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:37,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 14:07:37,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:37,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:37,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:37,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 14:07:37,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:37,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:37,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:37,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:37,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 14:07:37,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:37,863 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:07:37,907 INFO L321 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-23 14:07:37,907 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 3 new quantified variables, introduced 5 case distinctions, treesize of input 256 treesize of output 257 [2022-11-23 14:07:37,943 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:07:37,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 238 [2022-11-23 14:07:37,974 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:07:37,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 238 [2022-11-23 14:07:38,526 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2022-11-23 14:07:38,596 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-11-23 14:07:38,597 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 21 treesize of output 33 [2022-11-23 14:07:38,690 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-11-23 14:07:38,693 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 21 treesize of output 33 [2022-11-23 14:07:38,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:38,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:07:38,800 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 [2022-11-23 14:07:38,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:07:38,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:38,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:38,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:38,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:38,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:38,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 14:07:38,837 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:07:42,933 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6360#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= |ULTIMATE.start_main_~flag~0#1| 1) (<= 0 |ULTIMATE.start_main_~flag~0#1|) (exists ((|v_ULTIMATE.start_main_~p~0#1.offset_178| Int) (|v_ULTIMATE.start_main_~p~0#1.base_198| Int)) (and (= (select |#valid| |v_ULTIMATE.start_main_~p~0#1.base_198|) 1) (<= (+ 8 |v_ULTIMATE.start_main_~p~0#1.offset_178|) (select |#length| |v_ULTIMATE.start_main_~p~0#1.base_198|)) (<= 0 |v_ULTIMATE.start_main_~p~0#1.offset_178|) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~p~0#1.base_198|) (+ 4 |v_ULTIMATE.start_main_~p~0#1.offset_178|)) |ULTIMATE.start_main_~p~0#1.offset|) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~p~0#1.base_198|) (+ 4 |v_ULTIMATE.start_main_~p~0#1.offset_178|)) |ULTIMATE.start_main_~p~0#1.base|))) (<= 0 |ULTIMATE.start_main_~tmp~0#1.offset|) (= |#NULL.offset| 0) (not (= |ULTIMATE.start_main_~tmp~0#1.offset| 0)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:07:42,933 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:07:42,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:07:42,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2022-11-23 14:07:42,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266287399] [2022-11-23 14:07:42,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:07:42,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-23 14:07:42,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:07:42,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-23 14:07:42,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=2144, Unknown=5, NotChecked=0, Total=2550 [2022-11-23 14:07:42,935 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand has 33 states, 32 states have (on average 2.8125) internal successors, (90), 32 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:07:44,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:07:44,059 INFO L93 Difference]: Finished difference Result 130 states and 138 transitions. [2022-11-23 14:07:44,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-23 14:07:44,060 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.8125) internal successors, (90), 32 states have internal predecessors, (90), 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 33 [2022-11-23 14:07:44,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:07:44,061 INFO L225 Difference]: With dead ends: 130 [2022-11-23 14:07:44,061 INFO L226 Difference]: Without dead ends: 130 [2022-11-23 14:07:44,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 53 SyntacticMatches, 7 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1809 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=722, Invalid=3829, Unknown=5, NotChecked=0, Total=4556 [2022-11-23 14:07:44,064 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 417 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:07:44,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 398 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:07:44,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-23 14:07:44,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 86. [2022-11-23 14:07:44,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 77 states have (on average 1.1818181818181819) internal successors, (91), 85 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:07:44,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2022-11-23 14:07:44,067 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 33 [2022-11-23 14:07:44,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:07:44,067 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2022-11-23 14:07:44,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.8125) internal successors, (90), 32 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:07:44,068 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2022-11-23 14:07:44,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-23 14:07:44,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:07:44,068 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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] [2022-11-23 14:07:44,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 14:07:44,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:07:44,274 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-23 14:07:44,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:07:44,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1899870503, now seen corresponding path program 1 times [2022-11-23 14:07:44,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:07:44,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085503976] [2022-11-23 14:07:44,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:44,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:07:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:07:44,923 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:07:44,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:07:44,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085503976] [2022-11-23 14:07:44,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085503976] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:07:44,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870335488] [2022-11-23 14:07:44,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:44,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:07:44,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:07:44,929 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:07:44,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 14:07:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:07:45,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-23 14:07:45,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:07:45,144 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-23 14:07:45,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-23 14:07:45,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:45,338 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:07:45,338 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 26 treesize of output 27 [2022-11-23 14:07:45,580 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 23 treesize of output 11 [2022-11-23 14:07:45,634 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:07:45,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:07:45,891 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:07:45,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-23 14:07:45,900 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:07:45,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2022-11-23 14:07:45,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-23 14:07:46,063 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:07:46,063 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 [2022-11-23 14:07:46,237 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:07:46,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870335488] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:07:46,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1301253655] [2022-11-23 14:07:46,239 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-23 14:07:46,239 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:07:46,239 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:07:46,239 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:07:46,240 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:07:46,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:46,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:46,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 14:07:46,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:46,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:07:46,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:07:46,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:07:46,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:46,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:46,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:46,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:46,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:46,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 14:07:46,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:46,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:46,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:46,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:46,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 14:07:46,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:46,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:46,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 14:07:46,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:46,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:46,544 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:07:46,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 260 treesize of output 242 [2022-11-23 14:07:46,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:07:46,604 INFO L321 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-23 14:07:46,605 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 3 new quantified variables, introduced 5 case distinctions, treesize of input 256 treesize of output 257 [2022-11-23 14:07:46,639 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:07:46,639 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 1 case distinctions, treesize of input 256 treesize of output 238 [2022-11-23 14:07:46,955 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 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-23 14:07:47,038 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-11-23 14:07:47,038 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 21 treesize of output 33 [2022-11-23 14:07:47,169 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-11-23 14:07:47,169 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 21 treesize of output 33 [2022-11-23 14:07:47,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:07:47,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:07:47,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:47,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:07:47,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:47,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:47,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:47,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:47,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:07:47,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 14:07:47,335 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:07:52,041 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6861#(and (or (and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~flag~0#1| 1) (= |#NULL.base| 0)) (and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~t~0#1.offset| 0) (= |#NULL.base| 0))) (not (< |ULTIMATE.start_main_~tmp~0#1.base| |#StackHeapBarrier|)) (<= |ULTIMATE.start_main_~flag~0#1| 1) (= |ULTIMATE.start_main_~tmp~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~flag~0#1|) (<= |#NULL.offset| 0) (exists ((|v_ULTIMATE.start_main_~p~0#1.base_217| Int) (|v_ULTIMATE.start_main_~p~0#1.offset_194| Int)) (and (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~p~0#1.base_217|) (+ 4 |v_ULTIMATE.start_main_~p~0#1.offset_194|)) |ULTIMATE.start_main_~p~0#1.offset|) (<= 0 |v_ULTIMATE.start_main_~p~0#1.offset_194|) (= (select |#valid| |v_ULTIMATE.start_main_~p~0#1.base_217|) 1) (<= (+ 8 |v_ULTIMATE.start_main_~p~0#1.offset_194|) (select |#length| |v_ULTIMATE.start_main_~p~0#1.base_217|)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~p~0#1.base_217|) (+ 4 |v_ULTIMATE.start_main_~p~0#1.offset_194|)) |ULTIMATE.start_main_~p~0#1.base|))) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-23 14:07:52,042 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:07:52,042 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:07:52,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 34 [2022-11-23 14:07:52,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715981295] [2022-11-23 14:07:52,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:07:52,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-23 14:07:52,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:07:52,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-23 14:07:52,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=2384, Unknown=1, NotChecked=0, Total=2756 [2022-11-23 14:07:52,045 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand has 35 states, 35 states have (on average 2.6285714285714286) internal successors, (92), 34 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:07:53,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:07:53,327 INFO L93 Difference]: Finished difference Result 107 states and 114 transitions. [2022-11-23 14:07:53,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-23 14:07:53,329 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.6285714285714286) internal successors, (92), 34 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-23 14:07:53,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:07:53,330 INFO L225 Difference]: With dead ends: 107 [2022-11-23 14:07:53,330 INFO L226 Difference]: Without dead ends: 107 [2022-11-23 14:07:53,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 57 SyntacticMatches, 8 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=610, Invalid=3945, Unknown=1, NotChecked=0, Total=4556 [2022-11-23 14:07:53,332 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 405 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:07:53,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 405 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:07:53,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-23 14:07:53,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 84. [2022-11-23 14:07:53,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 75 states have (on average 1.1733333333333333) internal successors, (88), 83 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:07:53,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2022-11-23 14:07:53,335 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 34 [2022-11-23 14:07:53,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:07:53,335 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2022-11-23 14:07:53,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.6285714285714286) internal successors, (92), 34 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:07:53,336 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2022-11-23 14:07:53,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-23 14:07:53,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:07:53,337 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, 1, 1, 1, 1] [2022-11-23 14:07:53,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-23 14:07:53,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:07:53,543 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-23 14:07:53,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:07:53,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1236018122, now seen corresponding path program 1 times [2022-11-23 14:07:53,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:07:53,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319981532] [2022-11-23 14:07:53,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:53,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:07:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:07:54,376 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:07:54,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:07:54,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319981532] [2022-11-23 14:07:54,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319981532] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:07:54,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465447304] [2022-11-23 14:07:54,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:54,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:07:54,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:07:54,379 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:07:54,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 14:07:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:07:54,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-23 14:07:54,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:07:54,672 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-23 14:07:54,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 44 [2022-11-23 14:07:54,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:54,931 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:07:54,931 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 49 treesize of output 46 [2022-11-23 14:07:55,228 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 46 treesize of output 26 [2022-11-23 14:07:55,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 25 treesize of output 22 [2022-11-23 14:07:55,488 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:07:55,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:07:55,665 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_767 (Array Int Int))) (= |c_ULTIMATE.start_main_old_#valid#1| (store (store |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base| 0) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_767) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 0))) is different from false [2022-11-23 14:07:55,678 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_767 (Array Int Int))) (= |c_ULTIMATE.start_main_old_#valid#1| (store (store |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base| 0) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) v_ArrVal_767) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 0))) is different from false [2022-11-23 14:07:55,686 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:07:55,687 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 32 treesize of output 33 [2022-11-23 14:07:55,697 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:07:55,697 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 56 treesize of output 55 [2022-11-23 14:07:55,703 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 21 treesize of output 17 [2022-11-23 14:08:26,949 WARN L233 SmtUtils]: Spent 22.13s on a formula simplification. DAG size of input: 42 DAG size of output: 35 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:08:51,181 WARN L233 SmtUtils]: Spent 24.08s on a formula simplification that was a NOOP. DAG size: 48 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:09:24,512 WARN L233 SmtUtils]: Spent 32.13s on a formula simplification. DAG size of input: 55 DAG size of output: 46 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:09:32,811 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:09:32,840 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2022-11-23 14:09:32,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465447304] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:09:32,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1894708144] [2022-11-23 14:09:32,843 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2022-11-23 14:09:32,843 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:09:32,843 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:09:32,843 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:09:32,844 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:09:32,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:32,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:32,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 14:09:32,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:09:32,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:09:32,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:32,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:09:32,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:32,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:32,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:32,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:32,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:32,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 14:09:32,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:09:32,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:32,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:32,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 14:09:32,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:09:33,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:09:33,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:33,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:33,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 14:09:33,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:09:33,162 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:09:33,213 INFO L321 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-23 14:09:33,213 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 3 new quantified variables, introduced 5 case distinctions, treesize of input 256 treesize of output 257 [2022-11-23 14:09:33,249 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:09:33,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 238 [2022-11-23 14:09:33,283 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:09:33,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 238 [2022-11-23 14:09:33,622 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2022-11-23 14:09:33,705 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-11-23 14:09:33,705 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 21 treesize of output 33 [2022-11-23 14:09:33,820 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-11-23 14:09:33,820 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 21 treesize of output 33 [2022-11-23 14:09:33,860 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 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-23 14:09:33,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:33,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:09:33,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:09:33,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:09:33,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:33,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:33,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:33,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:34,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:34,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 14:09:34,006 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:09:39,072 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7341#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (< |ULTIMATE.start_main_~p~0#1.base| |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~flag~0#1| 1) (not (= |ULTIMATE.start_main_old_#valid#1| |#valid|)) (<= 0 |ULTIMATE.start_main_~flag~0#1|) (= (select |#valid| |ULTIMATE.start_main_~p~0#1.base|) 0) (<= (+ |ULTIMATE.start_main_~p~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~p~0#1.base|)) (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 3) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~p~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#res#1| 0) (= |#NULL.base| 0))' at error location [2022-11-23 14:09:39,072 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:09:39,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:09:39,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 35 [2022-11-23 14:09:39,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628130407] [2022-11-23 14:09:39,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:09:39,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-23 14:09:39,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:09:39,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-23 14:09:39,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=2981, Unknown=7, NotChecked=226, Total=3540 [2022-11-23 14:09:39,075 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand has 37 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 36 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:40,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:09:40,495 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2022-11-23 14:09:40,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 14:09:40,496 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 36 states have internal predecessors, (97), 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 35 [2022-11-23 14:09:40,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:09:40,497 INFO L225 Difference]: With dead ends: 93 [2022-11-23 14:09:40,497 INFO L226 Difference]: Without dead ends: 71 [2022-11-23 14:09:40,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 55 SyntacticMatches, 5 SemanticMatches, 65 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1701 ImplicationChecksByTransitivity, 103.3s TimeCoverageRelationStatistics Valid=417, Invalid=3744, Unknown=7, NotChecked=254, Total=4422 [2022-11-23 14:09:40,498 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 66 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:09:40,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 369 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 611 Invalid, 0 Unknown, 122 Unchecked, 0.7s Time] [2022-11-23 14:09:40,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-23 14:09:40,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 64. [2022-11-23 14:09:40,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 63 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:40,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2022-11-23 14:09:40,500 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 35 [2022-11-23 14:09:40,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:09:40,500 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2022-11-23 14:09:40,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 36 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:40,500 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2022-11-23 14:09:40,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-23 14:09:40,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:09:40,501 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 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] [2022-11-23 14:09:40,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-23 14:09:40,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-23 14:09:40,705 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-23 14:09:40,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:09:40,705 INFO L85 PathProgramCache]: Analyzing trace with hash -403151837, now seen corresponding path program 1 times [2022-11-23 14:09:40,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:09:40,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61025061] [2022-11-23 14:09:40,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:09:40,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:09:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:09:41,487 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:09:41,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:09:41,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61025061] [2022-11-23 14:09:41,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61025061] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:09:41,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974123662] [2022-11-23 14:09:41,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:09:41,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:09:41,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:09:41,489 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:09:41,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 14:09:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:09:41,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-23 14:09:41,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:09:41,698 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 14:09:41,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-23 14:09:41,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:09:41,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:09:41,942 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:09:41,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2022-11-23 14:09:41,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:09:41,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:41,959 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 21 [2022-11-23 14:09:42,037 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-11-23 14:09:42,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 20 treesize of output 22 [2022-11-23 14:09:42,136 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:09:42,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2022-11-23 14:09:42,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:09:42,159 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:09:42,167 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-23 14:09:42,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 28 [2022-11-23 14:09:42,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-23 14:09:42,386 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-23 14:09:42,387 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 99 [2022-11-23 14:09:42,399 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:09:42,401 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 110 treesize of output 103 [2022-11-23 14:09:42,405 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 36 treesize of output 38 [2022-11-23 14:09:42,551 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:09:42,556 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-23 14:09:42,557 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 30 [2022-11-23 14:09:42,561 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 33 treesize of output 17 [2022-11-23 14:09:42,599 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 [2022-11-23 14:09:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:09:42,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:09:42,712 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_858 (Array Int Int)) (v_ArrVal_859 (Array Int Int)) (v_ArrVal_860 (Array Int Int))) (not (= 3 (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_858) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_860) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_859) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)))))) is different from false [2022-11-23 14:09:42,726 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_858 (Array Int Int)) (v_ArrVal_859 (Array Int Int)) (v_ArrVal_860 (Array Int Int))) (not (= (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (select (select (store |c_#memory_int| .cse0 v_ArrVal_858) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_860) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1)) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_859) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) 3))) is different from false [2022-11-23 14:09:42,894 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:09:42,894 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 57 [2022-11-23 14:09:42,904 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:09:42,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 66 [2022-11-23 14:09:42,925 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:09:42,925 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 121 treesize of output 124 [2022-11-23 14:09:42,933 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 76 treesize of output 58 [2022-11-23 14:09:42,972 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 30 treesize of output 22 [2022-11-23 14:09:43,423 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:09:43,423 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 118 treesize of output 109 [2022-11-23 14:09:43,432 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:09:43,432 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 98 treesize of output 99 [2022-11-23 14:09:43,447 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:09:43,447 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 207 treesize of output 146 [2022-11-23 14:09:43,453 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 126 treesize of output 118 [2022-11-23 14:09:43,459 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 118 treesize of output 114 [2022-11-23 14:09:43,475 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:09:43,475 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 253 treesize of output 246 [2022-11-23 14:09:43,486 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 230 treesize of output 222 [2022-11-23 14:09:43,493 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 222 treesize of output 214 [2022-11-23 14:09:43,507 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:09:43,508 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 214 treesize of output 199 [2022-11-23 14:09:43,522 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:09:43,523 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 190 treesize of output 159 [2022-11-23 14:09:44,653 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:09:44,654 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 107 treesize of output 255 [2022-11-23 14:09:46,231 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2022-11-23 14:09:46,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974123662] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:09:46,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [839269613] [2022-11-23 14:09:46,234 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-11-23 14:09:46,234 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:09:46,235 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:09:46,235 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:09:46,235 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:09:46,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:46,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:46,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 14:09:46,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:09:46,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:09:46,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:46,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:09:46,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:46,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:46,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:46,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:46,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:46,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-11-23 14:09:46,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:46,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:46,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-23 14:09:46,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:09:46,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:09:46,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:46,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:46,455 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-23 14:09:46,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 46 [2022-11-23 14:09:46,481 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:09:46,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 16 [2022-11-23 14:09:46,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:46,492 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 34 treesize of output 16 [2022-11-23 14:09:46,609 INFO L321 Elim1Store]: treesize reduction 142, result has 15.5 percent of original size [2022-11-23 14:09:46,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 351 treesize of output 351 [2022-11-23 14:09:46,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:09:46,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:09:46,776 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 [2022-11-23 14:09:46,921 INFO L321 Elim1Store]: treesize reduction 64, result has 29.7 percent of original size [2022-11-23 14:09:46,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 138 treesize of output 129 [2022-11-23 14:09:46,982 INFO L321 Elim1Store]: treesize reduction 64, result has 29.7 percent of original size [2022-11-23 14:09:46,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 117 [2022-11-23 14:09:47,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:09:47,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:47,090 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 34 treesize of output 16 [2022-11-23 14:09:47,111 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:09:47,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 16 [2022-11-23 14:09:47,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:09:47,142 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 [2022-11-23 14:09:47,147 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 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-23 14:09:47,163 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 [2022-11-23 14:09:47,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:09:47,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:09:47,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:47,208 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 34 treesize of output 16 [2022-11-23 14:09:47,228 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:09:47,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 16 [2022-11-23 14:09:47,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:09:47,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:47,254 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 34 treesize of output 16 [2022-11-23 14:09:47,273 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:09:47,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 16 [2022-11-23 14:09:47,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:09:47,347 INFO L321 Elim1Store]: treesize reduction 58, result has 29.3 percent of original size [2022-11-23 14:09:47,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 180 treesize of output 194 [2022-11-23 14:09:47,436 INFO L321 Elim1Store]: treesize reduction 62, result has 41.5 percent of original size [2022-11-23 14:09:47,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 181 treesize of output 213 [2022-11-23 14:09:47,652 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 13 treesize of output 9 [2022-11-23 14:09:47,657 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 [2022-11-23 14:09:47,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:09:47,776 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-23 14:09:47,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 171 treesize of output 163 [2022-11-23 14:09:47,817 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-23 14:09:47,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 151 [2022-11-23 14:09:47,879 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 14:09:47,879 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 143 treesize of output 149 [2022-11-23 14:09:48,895 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2022-11-23 14:09:48,973 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-11-23 14:09:48,973 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 21 treesize of output 33 [2022-11-23 14:09:49,110 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-11-23 14:09:49,111 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 21 treesize of output 33 [2022-11-23 14:09:49,241 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-23 14:09:49,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 174 [2022-11-23 14:09:49,278 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-23 14:09:49,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 170 treesize of output 162 [2022-11-23 14:09:49,312 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-23 14:09:49,313 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 154 treesize of output 160 [2022-11-23 14:09:49,482 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-23 14:09:49,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 16 [2022-11-23 14:09:49,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:09:49,491 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 34 treesize of output 16 [2022-11-23 14:09:49,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:09:49,541 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 [2022-11-23 14:09:49,549 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 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-23 14:09:49,551 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:09:53,181 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7800#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= |ULTIMATE.start_main_~flag~0#1| 1) (<= 0 |ULTIMATE.start_main_~flag~0#1|) (not (= (select |#valid| |ULTIMATE.start_main_~p~0#1.base|) 1)) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:09:53,181 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:09:53,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:09:53,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 41 [2022-11-23 14:09:53,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053550623] [2022-11-23 14:09:53,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:09:53,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-23 14:09:53,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:09:53,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-23 14:09:53,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=3226, Unknown=5, NotChecked=234, Total=3782 [2022-11-23 14:09:53,183 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand has 42 states, 42 states have (on average 2.4761904761904763) internal successors, (104), 41 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:09:59,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 14:10:01,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:10:01,741 INFO L93 Difference]: Finished difference Result 120 states and 127 transitions. [2022-11-23 14:10:01,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-23 14:10:01,741 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.4761904761904763) internal successors, (104), 41 states have internal predecessors, (104), 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 38 [2022-11-23 14:10:01,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:10:01,742 INFO L225 Difference]: With dead ends: 120 [2022-11-23 14:10:01,742 INFO L226 Difference]: Without dead ends: 102 [2022-11-23 14:10:01,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 63 SyntacticMatches, 6 SemanticMatches, 91 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2534 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=824, Invalid=7360, Unknown=14, NotChecked=358, Total=8556 [2022-11-23 14:10:01,744 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 396 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 127 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 175 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:10:01,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 560 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 983 Invalid, 19 Unknown, 175 Unchecked, 4.0s Time] [2022-11-23 14:10:01,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-23 14:10:01,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 80. [2022-11-23 14:10:01,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 79 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:10:01,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2022-11-23 14:10:01,747 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 38 [2022-11-23 14:10:01,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:10:01,748 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2022-11-23 14:10:01,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.4761904761904763) internal successors, (104), 41 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:10:01,748 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2022-11-23 14:10:01,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-23 14:10:01,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:10:01,749 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:10:01,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-23 14:10:01,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-23 14:10:01,953 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-23 14:10:01,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:10:01,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1434091777, now seen corresponding path program 2 times [2022-11-23 14:10:01,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:10:01,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259047055] [2022-11-23 14:10:01,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:10:01,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:10:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:10:03,389 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:10:03,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:10:03,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259047055] [2022-11-23 14:10:03,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259047055] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:10:03,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094967923] [2022-11-23 14:10:03,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:10:03,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:10:03,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:10:03,397 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:10:03,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d04c6eb-bc7d-4721-8b4d-fc82a8485940/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-23 14:10:03,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-23 14:10:03,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:10:03,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 92 conjunts are in the unsatisfiable core [2022-11-23 14:10:03,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:10:03,674 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-23 14:10:03,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-23 14:10:03,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:10:03,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:10:03,812 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:10:03,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-23 14:10:03,819 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 5 treesize of output 3 [2022-11-23 14:10:03,832 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:10:03,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2022-11-23 14:10:03,884 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-23 14:10:03,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-23 14:10:03,950 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:10:03,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-23 14:10:03,958 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 5 treesize of output 3 [2022-11-23 14:10:03,974 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-23 14:10:03,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2022-11-23 14:10:04,187 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:10:04,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-23 14:10:04,196 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 5 treesize of output 3 [2022-11-23 14:10:04,223 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-23 14:10:04,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 53 [2022-11-23 14:10:04,234 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 16 treesize of output 8 [2022-11-23 14:10:04,344 INFO L321 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2022-11-23 14:10:04,344 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 21 treesize of output 29 [2022-11-23 14:10:04,482 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-23 14:10:04,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-11-23 14:10:04,522 INFO L321 Elim1Store]: treesize reduction 54, result has 31.6 percent of original size [2022-11-23 14:10:04,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 62 [2022-11-23 14:10:04,902 INFO L321 Elim1Store]: treesize reduction 50, result has 39.0 percent of original size [2022-11-23 14:10:04,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 179 treesize of output 155 [2022-11-23 14:10:04,968 INFO L321 Elim1Store]: treesize reduction 74, result has 43.9 percent of original size [2022-11-23 14:10:04,968 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 3 new quantified variables, introduced 5 case distinctions, treesize of input 127 treesize of output 153 [2022-11-23 14:10:04,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:10:05,065 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 5 treesize of output 3 [2022-11-23 14:10:05,152 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 18 treesize of output 10 [2022-11-23 14:10:05,726 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:10:05,727 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 359 treesize of output 381 [2022-11-23 14:10:05,911 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 19 treesize of output 11 [2022-11-23 14:10:05,944 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 19 treesize of output 11 [2022-11-23 14:10:05,975 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 19 treesize of output 11 [2022-11-23 14:10:07,093 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 62 treesize of output 50 [2022-11-23 14:10:07,113 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 77 treesize of output 63 [2022-11-23 14:10:07,162 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 62 treesize of output 50 [2022-11-23 14:10:07,184 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 81 treesize of output 69 [2022-11-23 14:10:07,802 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 63 treesize of output 51 [2022-11-23 14:10:07,854 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 133 treesize of output 113 [2022-11-23 14:10:14,462 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:10:14,481 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:10:14,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 173 treesize of output 167 [2022-11-23 14:10:15,258 INFO L321 Elim1Store]: treesize reduction 4, result has 97.1 percent of original size [2022-11-23 14:10:15,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 136 treesize of output 212 [2022-11-23 14:10:17,836 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 14:10:17,836 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 24 [2022-11-23 14:10:17,850 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 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-23 14:10:17,853 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:10:17,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:10:18,420 INFO L321 Elim1Store]: treesize reduction 4, result has 86.2 percent of original size [2022-11-23 14:10:18,420 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 96 treesize of output 95 [2022-11-23 14:10:19,498 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:10:19,498 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2022-11-23 14:10:19,505 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:10:19,505 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2022-11-23 14:10:19,523 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:10:19,523 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 44 [2022-11-23 14:10:19,541 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:10:19,541 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2022-11-23 14:10:19,548 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:10:19,548 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2022-11-23 14:10:22,493 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:10:22,494 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 310 treesize of output 494 [2022-11-23 14:10:22,887 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 50 treesize of output 42 [2022-11-23 14:10:22,916 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 57 treesize of output 45 [2022-11-23 14:10:22,967 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 41 treesize of output 33 [2022-11-23 14:10:23,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-23 14:10:23,240 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 46 treesize of output 38 [2022-11-23 14:10:23,274 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 46 treesize of output 38 [2022-11-23 14:10:23,847 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 19 treesize of output 11 [2022-11-23 14:10:23,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:10:24,001 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 28 treesize of output 20 [2022-11-23 14:10:24,172 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 35 treesize of output 23 [2022-11-23 14:10:24,374 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 45 treesize of output 37 [2022-11-23 14:10:24,440 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 52 treesize of output 40 [2022-11-23 14:10:24,504 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 45 treesize of output 37 [2022-11-23 14:10:24,584 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 291 treesize of output 275 [2022-11-23 14:10:25,663 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 30 treesize of output 18 [2022-11-23 14:10:25,704 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 63 treesize of output 47 [2022-11-23 14:10:25,799 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 56 treesize of output 44 [2022-11-23 14:10:26,053 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 57 treesize of output 45 [2022-11-23 14:10:26,067 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 45 treesize of output 37 [2022-11-23 14:10:26,149 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 19 treesize of output 11 [2022-11-23 14:10:26,298 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-23 14:10:26,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 38 [2022-11-23 14:10:26,887 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 23 treesize of output 15 [2022-11-23 14:10:27,073 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 196 [2022-11-23 14:10:27,245 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 215 treesize of output 199 [2022-11-23 14:10:27,425 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 182 treesize of output 170 [2022-11-23 14:10:34,427 WARN L859 $PredicateComparison]: unable to prove that (or (< |c_ULTIMATE.start_main_~a~0#1.offset| 0) (let ((.cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse5 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|))) (let ((.cse15 (forall ((v_arrayElimArr_21 (Array Int Int)) (v_subst_3 Int)) (let ((.cse187 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (or (= |c_ULTIMATE.start_main_~p~0#1.base| .cse187) (forall ((|ULTIMATE.start_main_~p~0#1.offset| Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse188 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)))) (or (= |c_ULTIMATE.start_main_~p~0#1.base| (select (select (store (store .cse188 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse187 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)) (forall ((v_prenex_129 (Array Int Int)) (v_arrayElimArr_19 (Array Int Int)) (v_subst_2 Int) (v_prenex_127 (Array Int Int)) (v_arrayElimArr_20 (Array Int Int)) (v_prenex_128 (Array Int Int))) (let ((.cse190 (+ 4 v_subst_2))) (let ((.cse189 (select v_arrayElimArr_19 .cse190))) (or (not (= (select (select (store (store .cse188 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_19) .cse189 v_prenex_129) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= .cse187 .cse189) (not (= (select v_arrayElimArr_20 .cse190) 0)) (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_127) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_20) .cse189 v_prenex_128) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.offset|) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse189)))))))))))) (.cse55 (forall ((v_arrayElimArr_21 (Array Int Int)) (v_subst_3 Int)) (let ((.cse183 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (or (forall ((|ULTIMATE.start_main_~p~0#1.offset| Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse184 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)))) (let ((.cse182 (select (select (store (store .cse184 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse183 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (= |c_ULTIMATE.start_main_~p~0#1.base| .cse182) (= .cse183 .cse182) (forall ((v_prenex_129 (Array Int Int)) (v_arrayElimArr_19 (Array Int Int)) (v_subst_2 Int) (v_prenex_127 (Array Int Int)) (v_arrayElimArr_20 (Array Int Int)) (v_prenex_128 (Array Int Int))) (let ((.cse186 (+ 4 v_subst_2))) (let ((.cse185 (select v_arrayElimArr_19 .cse186))) (or (not (= (select (select (store (store .cse184 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_19) .cse185 v_prenex_129) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= .cse183 .cse185) (not (= (select v_arrayElimArr_20 .cse186) 0)) (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_127) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_20) .cse185 v_prenex_128) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.offset|) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse185))))))))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse183))))) (.cse16 (= |c_ULTIMATE.start_main_~a~0#1.offset| 0))) (and (forall ((v_arrayElimArr_21 (Array Int Int)) (v_subst_3 Int)) (let ((.cse0 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (or (= |c_ULTIMATE.start_main_~p~0#1.base| .cse0) (forall ((|ULTIMATE.start_main_~p~0#1.offset| Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)))) (or (= |c_ULTIMATE.start_main_~p~0#1.base| (select (select (store (store .cse1 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse0 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)) (forall ((v_arrayElimArr_22 (Array Int Int)) (v_arrayElimArr_23 (Array Int Int)) (v_ArrVal_969 (Array Int Int)) (v_ArrVal_980 (Array Int Int)) (v_subst_1 Int) (v_prenex_126 (Array Int Int))) (let ((.cse3 (+ 4 v_subst_1))) (let ((.cse4 (select v_arrayElimArr_22 .cse3))) (or (not (= (select v_arrayElimArr_23 .cse3) 0)) (not (= (select (select (store (store .cse1 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_22) .cse4 v_prenex_126) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~a~0#1.offset| (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_969) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_23) .cse4 v_ArrVal_980) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse4) (= .cse4 |c_ULTIMATE.start_main_~a~0#1.base|))))))))))) (forall ((v_arrayElimArr_21 (Array Int Int)) (v_subst_3 Int)) (let ((.cse10 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (or (forall ((|ULTIMATE.start_main_~p~0#1.offset| Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)))) (let ((.cse9 (select (select (store (store .cse7 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse10 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (forall ((v_arrayElimArr_23 (Array Int Int)) (v_subst_1 Int)) (let ((.cse6 (+ 4 v_subst_1))) (or (not (= (select v_arrayElimArr_23 .cse6) 0)) (forall ((v_arrayElimArr_22 (Array Int Int)) (v_ArrVal_969 (Array Int Int)) (v_ArrVal_980 (Array Int Int)) (v_prenex_126 (Array Int Int))) (let ((.cse8 (select v_arrayElimArr_22 .cse6))) (or (not (= (select (select (store (store .cse7 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_22) .cse8 v_prenex_126) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~a~0#1.offset| (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_969) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_23) .cse8 v_ArrVal_980) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse8) (= .cse8 |c_ULTIMATE.start_main_~a~0#1.base|) (= .cse8 .cse9))))))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse9))))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse10)))) (or (and (forall ((v_arrayElimArr_21 (Array Int Int)) (v_subst_3 Int)) (let ((.cse14 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (or (forall ((|ULTIMATE.start_main_~p~0#1.offset| Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse11 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)))) (or (forall ((v_prenex_490 (Array Int Int)) (v_prenex_491 (Array Int Int)) (v_prenex_493 (Array Int Int)) (v_prenex_494 (Array Int Int)) (v_prenex_495 (Array Int Int)) (v_prenex_492 Int)) (let ((.cse13 (+ v_prenex_492 4))) (let ((.cse12 (select v_prenex_491 .cse13))) (or (not (= (select (select (store (store .cse11 |c_ULTIMATE.start_main_~t~0#1.base| v_prenex_491) .cse12 v_prenex_490) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_493) |c_ULTIMATE.start_main_~t~0#1.base| v_prenex_494) .cse12 v_prenex_495) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.offset|) (not (= (select v_prenex_494 .cse13) 0)) (= .cse12 |c_ULTIMATE.start_main_~p~0#1.base|))))) (= |c_ULTIMATE.start_main_~p~0#1.base| (select (select (store (store .cse11 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse14 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse14)))) .cse15) .cse16) (or (forall ((v_prenex_129 (Array Int Int)) (v_arrayElimArr_21 (Array Int Int)) (v_arrayElimArr_19 (Array Int Int)) (|ULTIMATE.start_main_~p~0#1.offset| Int) (v_subst_3 Int) (v_subst_2 Int) (v_ArrVal_981 (Array Int Int)) (v_arrayElimArr_20 (Array Int Int)) (v_prenex_127 (Array Int Int)) (v_prenex_128 (Array Int Int))) (let ((.cse19 (+ 4 v_subst_2))) (let ((.cse18 (select v_arrayElimArr_19 .cse19)) (.cse17 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)))) (or (not (= (select (select (store (store .cse17 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_19) .cse18 v_prenex_129) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (not (= (select v_arrayElimArr_20 .cse19) 0)) (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_127) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_20) .cse18 v_prenex_128) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.offset|) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse18) (= .cse18 (select (select (store (store .cse17 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) (select v_arrayElimArr_21 (+ 4 v_subst_3)) v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)))))) .cse16) (or (forall ((v_prenex_316 (Array Int Int)) (v_prenex_317 (Array Int Int)) (v_arrayElimArr_21 (Array Int Int)) (v_prenex_319 (Array Int Int)) (v_prenex_320 (Array Int Int)) (v_prenex_321 (Array Int Int)) (|ULTIMATE.start_main_~p~0#1.offset| Int) (v_subst_3 Int) (v_prenex_318 Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse23 (+ v_prenex_318 4))) (let ((.cse21 (select v_arrayElimArr_21 (+ 4 v_subst_3))) (.cse22 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|))) (.cse20 (select v_prenex_317 .cse23))) (or (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_319) |c_ULTIMATE.start_main_~t~0#1.base| v_prenex_320) .cse20 v_prenex_321) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.offset|) (= .cse21 .cse20) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse21) (= (select (select (store (store .cse22 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse21 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) .cse20) (not (= (select (select (store (store .cse22 |c_ULTIMATE.start_main_~t~0#1.base| v_prenex_317) .cse20 v_prenex_316) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse20) (not (= (select v_prenex_320 .cse23) 0)))))) .cse16) (or (forall ((v_prenex_316 (Array Int Int)) (v_prenex_317 (Array Int Int)) (v_arrayElimArr_21 (Array Int Int)) (v_prenex_319 (Array Int Int)) (v_prenex_320 (Array Int Int)) (v_prenex_321 (Array Int Int)) (|ULTIMATE.start_main_~p~0#1.offset| Int) (v_subst_3 Int) (v_prenex_318 Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse27 (+ v_prenex_318 4))) (let ((.cse25 (select v_arrayElimArr_21 (+ 4 v_subst_3))) (.cse26 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|))) (.cse24 (select v_prenex_317 .cse27))) (or (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_319) |c_ULTIMATE.start_main_~t~0#1.base| v_prenex_320) .cse24 v_prenex_321) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.offset|) (= .cse25 .cse24) (= (select (select (store (store .cse26 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse25 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) .cse24) (not (= (select (select (store (store .cse26 |c_ULTIMATE.start_main_~t~0#1.base| v_prenex_317) .cse24 v_prenex_316) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse24) (not (= (select v_prenex_320 .cse27) 0)))))) .cse16) (forall ((v_arrayElimArr_21 (Array Int Int)) (|ULTIMATE.start_main_~p~0#1.offset| Int) (v_subst_3 Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse29 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|))) (.cse31 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (or (forall ((v_arrayElimArr_22 (Array Int Int)) (v_arrayElimArr_23 (Array Int Int)) (v_ArrVal_969 (Array Int Int)) (v_ArrVal_980 (Array Int Int)) (v_subst_1 Int) (v_prenex_126 (Array Int Int))) (let ((.cse28 (+ 4 v_subst_1))) (let ((.cse30 (select v_arrayElimArr_22 .cse28))) (or (not (= (select v_arrayElimArr_23 .cse28) 0)) (not (= (select (select (store (store .cse29 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_22) .cse30 v_prenex_126) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~a~0#1.offset| (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_969) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_23) .cse30 v_ArrVal_980) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse30) (= .cse30 |c_ULTIMATE.start_main_~a~0#1.base|) (= .cse30 .cse31))))) (= |c_ULTIMATE.start_main_~p~0#1.base| (select (select (store (store .cse29 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse31 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))))) (or (forall ((v_prenex_129 (Array Int Int)) (v_arrayElimArr_21 (Array Int Int)) (v_arrayElimArr_19 (Array Int Int)) (|ULTIMATE.start_main_~p~0#1.offset| Int) (v_subst_3 Int) (v_subst_2 Int) (v_ArrVal_981 (Array Int Int)) (v_arrayElimArr_20 (Array Int Int)) (v_prenex_127 (Array Int Int)) (v_prenex_128 (Array Int Int))) (let ((.cse32 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|))) (.cse35 (+ 4 v_subst_2))) (let ((.cse33 (select v_arrayElimArr_19 .cse35)) (.cse34 (select (select (store (store .cse32 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) (select v_arrayElimArr_21 (+ 4 v_subst_3)) v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (not (= (select (select (store (store .cse32 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_19) .cse33 v_prenex_129) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse34) (not (= (select v_arrayElimArr_20 .cse35) 0)) (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_127) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_20) .cse33 v_prenex_128) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.offset|) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse33) (= .cse33 .cse34))))) .cse16) (or .cse16 (forall ((v_prenex_129 (Array Int Int)) (v_arrayElimArr_21 (Array Int Int)) (v_arrayElimArr_19 (Array Int Int)) (|ULTIMATE.start_main_~p~0#1.offset| Int) (v_subst_3 Int) (v_subst_2 Int) (v_ArrVal_981 (Array Int Int)) (v_arrayElimArr_20 (Array Int Int)) (v_prenex_127 (Array Int Int)) (v_prenex_128 (Array Int Int))) (let ((.cse40 (+ 4 v_subst_2)) (.cse36 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|))) (.cse39 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (let ((.cse38 (select (select (store (store .cse36 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse39 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)) (.cse37 (select v_arrayElimArr_19 .cse40))) (or (not (= (select (select (store (store .cse36 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_19) .cse37 v_prenex_129) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse38) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse39) (= .cse39 .cse37) (= .cse39 .cse38) (not (= (select v_arrayElimArr_20 .cse40) 0)) (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_127) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_20) .cse37 v_prenex_128) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.offset|) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse37)))))) (forall ((v_arrayElimArr_21 (Array Int Int)) (|ULTIMATE.start_main_~p~0#1.offset| Int) (v_subst_3 Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse42 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|))) (.cse45 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (let ((.cse44 (select (select (store (store .cse42 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse45 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (forall ((v_arrayElimArr_23 (Array Int Int)) (v_subst_1 Int)) (let ((.cse41 (+ 4 v_subst_1))) (or (not (= (select v_arrayElimArr_23 .cse41) 0)) (forall ((v_arrayElimArr_22 (Array Int Int)) (v_ArrVal_969 (Array Int Int)) (v_ArrVal_980 (Array Int Int)) (v_prenex_126 (Array Int Int))) (let ((.cse43 (select v_arrayElimArr_22 .cse41))) (or (not (= (select (select (store (store .cse42 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_22) .cse43 v_prenex_126) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~a~0#1.offset| (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_969) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_23) .cse43 v_ArrVal_980) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse43) (= .cse43 |c_ULTIMATE.start_main_~a~0#1.base|) (= .cse43 .cse44) (= .cse43 .cse45))))))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse44))))) (or (and (forall ((v_arrayElimArr_21 (Array Int Int)) (v_subst_3 Int)) (let ((.cse46 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (or (= |c_ULTIMATE.start_main_~p~0#1.base| .cse46) (forall ((|ULTIMATE.start_main_~p~0#1.offset| Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse49 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)))) (or (forall ((v_prenex_466 Int) (v_prenex_464 (Array Int Int)) (v_prenex_465 (Array Int Int)) (v_prenex_467 (Array Int Int)) (v_prenex_468 (Array Int Int)) (v_prenex_469 (Array Int Int))) (let ((.cse47 (+ v_prenex_466 4))) (let ((.cse48 (select v_prenex_465 .cse47))) (or (not (= (select v_prenex_468 .cse47) 0)) (= .cse48 |c_ULTIMATE.start_main_~p~0#1.base|) (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_467) |c_ULTIMATE.start_main_~t~0#1.base| v_prenex_468) .cse48 v_prenex_469) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.offset|) (not (= (select (select (store (store .cse49 |c_ULTIMATE.start_main_~t~0#1.base| v_prenex_465) .cse48 v_prenex_464) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)))))) (= |c_ULTIMATE.start_main_~p~0#1.base| (select (select (store (store .cse49 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse46 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)))))))) .cse15) .cse16) (or (and (forall ((v_arrayElimArr_21 (Array Int Int)) (v_subst_3 Int)) (let ((.cse54 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (or (forall ((|ULTIMATE.start_main_~p~0#1.offset| Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse50 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)))) (let ((.cse53 (select (select (store (store .cse50 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse54 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (forall ((v_prenex_490 (Array Int Int)) (v_prenex_491 (Array Int Int)) (v_prenex_493 (Array Int Int)) (v_prenex_494 (Array Int Int)) (v_prenex_495 (Array Int Int)) (v_prenex_492 Int)) (let ((.cse52 (+ v_prenex_492 4))) (let ((.cse51 (select v_prenex_491 .cse52))) (or (not (= (select (select (store (store .cse50 |c_ULTIMATE.start_main_~t~0#1.base| v_prenex_491) .cse51 v_prenex_490) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_493) |c_ULTIMATE.start_main_~t~0#1.base| v_prenex_494) .cse51 v_prenex_495) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.offset|) (not (= (select v_prenex_494 .cse52) 0)) (= .cse51 |c_ULTIMATE.start_main_~p~0#1.base|))))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse53) (= .cse54 .cse53))))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse54)))) .cse55) .cse16) (forall ((v_arrayElimArr_21 (Array Int Int)) (v_subst_3 Int)) (let ((.cse60 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (or (forall ((|ULTIMATE.start_main_~p~0#1.offset| Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse57 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)))) (let ((.cse59 (select (select (store (store .cse57 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse60 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (forall ((v_arrayElimArr_23 (Array Int Int)) (v_subst_1 Int)) (let ((.cse56 (+ 4 v_subst_1))) (or (not (= (select v_arrayElimArr_23 .cse56) 0)) (forall ((v_arrayElimArr_22 (Array Int Int)) (v_ArrVal_969 (Array Int Int)) (v_ArrVal_980 (Array Int Int)) (v_prenex_126 (Array Int Int))) (let ((.cse58 (select v_arrayElimArr_22 .cse56))) (or (not (= (select (select (store (store .cse57 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_22) .cse58 v_prenex_126) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~a~0#1.offset| (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_969) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_23) .cse58 v_ArrVal_980) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse58) (= .cse58 |c_ULTIMATE.start_main_~a~0#1.base|) (= .cse58 .cse59))))))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse59) (= .cse60 .cse59))))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse60)))) (forall ((v_arrayElimArr_22 (Array Int Int)) (v_arrayElimArr_21 (Array Int Int)) (|ULTIMATE.start_main_~p~0#1.offset| Int) (v_subst_3 Int) (v_ArrVal_981 (Array Int Int)) (v_subst_1 Int)) (let ((.cse63 (+ 4 v_subst_1))) (let ((.cse61 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|))) (.cse62 (select v_arrayElimArr_22 .cse63)) (.cse64 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (or (forall ((v_prenex_126 (Array Int Int))) (not (= (select (select (store (store .cse61 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_22) .cse62 v_prenex_126) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|))) (forall ((v_arrayElimArr_23 (Array Int Int)) (v_ArrVal_969 (Array Int Int)) (v_ArrVal_980 (Array Int Int))) (or (not (= (select v_arrayElimArr_23 .cse63) 0)) (= |c_ULTIMATE.start_main_~a~0#1.offset| (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_969) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_23) .cse62 v_ArrVal_980) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse62) (= .cse62 |c_ULTIMATE.start_main_~a~0#1.base|) (= .cse62 (select (select (store (store .cse61 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse64 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)) (= .cse62 .cse64))))) (forall ((v_arrayElimArr_21 (Array Int Int)) (v_subst_3 Int)) (let ((.cse65 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (or (= |c_ULTIMATE.start_main_~p~0#1.base| .cse65) (forall ((|ULTIMATE.start_main_~p~0#1.offset| Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse68 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)))) (let ((.cse66 (select (select (store (store .cse68 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse65 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (= |c_ULTIMATE.start_main_~p~0#1.base| .cse66) (= .cse65 .cse66) (forall ((v_arrayElimArr_22 (Array Int Int)) (v_arrayElimArr_23 (Array Int Int)) (v_ArrVal_969 (Array Int Int)) (v_ArrVal_980 (Array Int Int)) (v_subst_1 Int) (v_prenex_126 (Array Int Int))) (let ((.cse67 (+ 4 v_subst_1))) (let ((.cse69 (select v_arrayElimArr_22 .cse67))) (or (not (= (select v_arrayElimArr_23 .cse67) 0)) (not (= (select (select (store (store .cse68 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_22) .cse69 v_prenex_126) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~a~0#1.offset| (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_969) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_23) .cse69 v_ArrVal_980) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse69) (= .cse69 |c_ULTIMATE.start_main_~a~0#1.base|)))))))))))) (or (and (forall ((v_arrayElimArr_21 (Array Int Int)) (v_subst_3 Int)) (let ((.cse70 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (or (= |c_ULTIMATE.start_main_~p~0#1.base| .cse70) (forall ((|ULTIMATE.start_main_~p~0#1.offset| Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse71 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)))) (let ((.cse74 (select (select (store (store .cse71 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse70 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (forall ((v_prenex_129 (Array Int Int)) (v_arrayElimArr_19 (Array Int Int)) (v_subst_2 Int) (v_arrayElimArr_20 (Array Int Int)) (v_prenex_127 (Array Int Int)) (v_prenex_128 (Array Int Int))) (let ((.cse73 (+ 4 v_subst_2))) (let ((.cse72 (select v_arrayElimArr_19 .cse73))) (or (not (= (select (select (store (store .cse71 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_19) .cse72 v_prenex_129) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (not (= (select v_arrayElimArr_20 .cse73) 0)) (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_127) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_20) .cse72 v_prenex_128) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.offset|) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse72) (= .cse72 .cse74))))) (= .cse70 .cse74)))))))) (forall ((v_arrayElimArr_21 (Array Int Int)) (v_subst_3 Int)) (let ((.cse75 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (or (forall ((|ULTIMATE.start_main_~p~0#1.offset| Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse78 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)))) (let ((.cse76 (select (select (store (store .cse78 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse75 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (= .cse75 .cse76) (forall ((v_prenex_316 (Array Int Int)) (v_prenex_317 (Array Int Int)) (v_prenex_319 (Array Int Int)) (v_prenex_320 (Array Int Int)) (v_prenex_321 (Array Int Int)) (v_prenex_318 Int)) (let ((.cse79 (+ v_prenex_318 4))) (let ((.cse77 (select v_prenex_317 .cse79))) (or (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_319) |c_ULTIMATE.start_main_~t~0#1.base| v_prenex_320) .cse77 v_prenex_321) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.offset|) (= .cse75 .cse77) (= .cse76 .cse77) (not (= (select (select (store (store .cse78 |c_ULTIMATE.start_main_~t~0#1.base| v_prenex_317) .cse77 v_prenex_316) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse77) (not (= (select v_prenex_320 .cse79) 0)))))))))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse75))))) .cse16) (or (and (forall ((v_arrayElimArr_21 (Array Int Int)) (v_subst_3 Int)) (let ((.cse84 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (or (forall ((|ULTIMATE.start_main_~p~0#1.offset| Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse80 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)))) (let ((.cse83 (select (select (store (store .cse80 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse84 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (forall ((v_prenex_129 (Array Int Int)) (v_arrayElimArr_19 (Array Int Int)) (v_subst_2 Int) (v_arrayElimArr_20 (Array Int Int)) (v_prenex_127 (Array Int Int)) (v_prenex_128 (Array Int Int))) (let ((.cse82 (+ 4 v_subst_2))) (let ((.cse81 (select v_arrayElimArr_19 .cse82))) (or (not (= (select (select (store (store .cse80 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_19) .cse81 v_prenex_129) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (not (= (select v_arrayElimArr_20 .cse82) 0)) (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_127) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_20) .cse81 v_prenex_128) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.offset|) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse81) (= .cse81 .cse83))))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse83) (= .cse84 .cse83))))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse84)))) (forall ((v_arrayElimArr_21 (Array Int Int)) (v_subst_3 Int)) (let ((.cse85 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (or (= |c_ULTIMATE.start_main_~p~0#1.base| .cse85) (forall ((|ULTIMATE.start_main_~p~0#1.offset| Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse88 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)))) (let ((.cse86 (select (select (store (store .cse88 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse85 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (= |c_ULTIMATE.start_main_~p~0#1.base| .cse86) (= .cse85 .cse86) (forall ((v_prenex_316 (Array Int Int)) (v_prenex_317 (Array Int Int)) (v_prenex_319 (Array Int Int)) (v_prenex_320 (Array Int Int)) (v_prenex_321 (Array Int Int)) (v_prenex_318 Int)) (let ((.cse89 (+ v_prenex_318 4))) (let ((.cse87 (select v_prenex_317 .cse89))) (or (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_319) |c_ULTIMATE.start_main_~t~0#1.base| v_prenex_320) .cse87 v_prenex_321) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.offset|) (= .cse85 .cse87) (= .cse86 .cse87) (not (= (select (select (store (store .cse88 |c_ULTIMATE.start_main_~t~0#1.base| v_prenex_317) .cse87 v_prenex_316) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse87) (not (= (select v_prenex_320 .cse89) 0)))))))))))))) .cse16) (or (forall ((v_prenex_129 (Array Int Int)) (v_arrayElimArr_21 (Array Int Int)) (v_arrayElimArr_19 (Array Int Int)) (|ULTIMATE.start_main_~p~0#1.offset| Int) (v_subst_3 Int) (v_subst_2 Int) (v_ArrVal_981 (Array Int Int)) (v_prenex_127 (Array Int Int)) (v_arrayElimArr_20 (Array Int Int)) (v_prenex_128 (Array Int Int))) (let ((.cse92 (+ 4 v_subst_2))) (let ((.cse90 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|))) (.cse91 (select v_arrayElimArr_19 .cse92))) (or (not (= (select (select (store (store .cse90 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_19) .cse91 v_prenex_129) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~p~0#1.base| (select (select (store (store .cse90 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) (select v_arrayElimArr_21 (+ 4 v_subst_3)) v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)) (not (= (select v_arrayElimArr_20 .cse92) 0)) (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_127) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_20) .cse91 v_prenex_128) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.offset|) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse91))))) .cse16) (or (and (forall ((v_arrayElimArr_21 (Array Int Int)) (v_subst_3 Int)) (let ((.cse97 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (or (forall ((|ULTIMATE.start_main_~p~0#1.offset| Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse95 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)))) (let ((.cse96 (select (select (store (store .cse95 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse97 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (forall ((v_prenex_466 Int) (v_prenex_464 (Array Int Int)) (v_prenex_465 (Array Int Int)) (v_prenex_467 (Array Int Int)) (v_prenex_468 (Array Int Int)) (v_prenex_469 (Array Int Int))) (let ((.cse93 (+ v_prenex_466 4))) (let ((.cse94 (select v_prenex_465 .cse93))) (or (not (= (select v_prenex_468 .cse93) 0)) (= .cse94 |c_ULTIMATE.start_main_~p~0#1.base|) (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_467) |c_ULTIMATE.start_main_~t~0#1.base| v_prenex_468) .cse94 v_prenex_469) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.offset|) (not (= (select (select (store (store .cse95 |c_ULTIMATE.start_main_~t~0#1.base| v_prenex_465) .cse94 v_prenex_464) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)))))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse96) (= .cse97 .cse96))))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse97)))) .cse55) .cse16) (forall ((v_arrayElimArr_21 (Array Int Int)) (|ULTIMATE.start_main_~p~0#1.offset| Int) (v_subst_3 Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse99 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|))) (.cse102 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (let ((.cse98 (select (select (store (store .cse99 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse102 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (= |c_ULTIMATE.start_main_~p~0#1.base| .cse98) (forall ((v_arrayElimArr_22 (Array Int Int)) (v_subst_1 Int)) (let ((.cse101 (+ 4 v_subst_1))) (let ((.cse100 (select v_arrayElimArr_22 .cse101))) (or (forall ((v_prenex_126 (Array Int Int))) (not (= (select (select (store (store .cse99 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_22) .cse100 v_prenex_126) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|))) (forall ((v_arrayElimArr_23 (Array Int Int)) (v_ArrVal_969 (Array Int Int)) (v_ArrVal_980 (Array Int Int))) (or (not (= (select v_arrayElimArr_23 .cse101) 0)) (= |c_ULTIMATE.start_main_~a~0#1.offset| (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_969) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_23) .cse100 v_ArrVal_980) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse100) (= .cse100 |c_ULTIMATE.start_main_~a~0#1.base|) (= .cse100 .cse98) (= .cse100 .cse102))))))))) (forall ((v_arrayElimArr_21 (Array Int Int)) (|ULTIMATE.start_main_~p~0#1.offset| Int) (v_subst_3 Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse105 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|))) (.cse107 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (let ((.cse103 (select (select (store (store .cse105 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse107 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (= |c_ULTIMATE.start_main_~p~0#1.base| .cse103) (forall ((v_arrayElimArr_22 (Array Int Int)) (v_arrayElimArr_23 (Array Int Int)) (v_ArrVal_969 (Array Int Int)) (v_ArrVal_980 (Array Int Int)) (v_subst_1 Int) (v_prenex_126 (Array Int Int))) (let ((.cse104 (+ 4 v_subst_1))) (let ((.cse106 (select v_arrayElimArr_22 .cse104))) (or (not (= (select v_arrayElimArr_23 .cse104) 0)) (not (= (select (select (store (store .cse105 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_22) .cse106 v_prenex_126) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~a~0#1.offset| (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_969) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_23) .cse106 v_ArrVal_980) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse106) (= .cse106 |c_ULTIMATE.start_main_~a~0#1.base|) (= .cse106 .cse103) (= .cse106 .cse107))))))))) (forall ((v_arrayElimArr_21 (Array Int Int)) (v_subst_3 Int)) (let ((.cse112 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (or (forall ((|ULTIMATE.start_main_~p~0#1.offset| Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse109 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)))) (let ((.cse111 (select (select (store (store .cse109 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse112 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (forall ((v_arrayElimArr_23 (Array Int Int)) (v_subst_1 Int)) (let ((.cse108 (+ 4 v_subst_1))) (or (not (= (select v_arrayElimArr_23 .cse108) 0)) (forall ((v_arrayElimArr_22 (Array Int Int)) (v_ArrVal_969 (Array Int Int)) (v_ArrVal_980 (Array Int Int)) (v_prenex_126 (Array Int Int))) (let ((.cse110 (select v_arrayElimArr_22 .cse108))) (or (not (= (select (select (store (store .cse109 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_22) .cse110 v_prenex_126) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~a~0#1.offset| (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_969) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_23) .cse110 v_ArrVal_980) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse110) (= .cse110 |c_ULTIMATE.start_main_~a~0#1.base|) (= .cse110 .cse111))))))) (= .cse112 .cse111))))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse112)))) (forall ((v_arrayElimArr_21 (Array Int Int)) (v_arrayElimArr_23 (Array Int Int)) (|ULTIMATE.start_main_~p~0#1.offset| Int) (v_subst_3 Int) (v_ArrVal_981 (Array Int Int)) (v_subst_1 Int)) (let ((.cse113 (+ 4 v_subst_1))) (or (not (= (select v_arrayElimArr_23 .cse113) 0)) (forall ((v_arrayElimArr_22 (Array Int Int)) (v_ArrVal_969 (Array Int Int)) (v_ArrVal_980 (Array Int Int)) (v_prenex_126 (Array Int Int))) (let ((.cse114 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|))) (.cse115 (select v_arrayElimArr_22 .cse113)) (.cse116 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (or (not (= (select (select (store (store .cse114 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_22) .cse115 v_prenex_126) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~a~0#1.offset| (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_969) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_23) .cse115 v_ArrVal_980) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse115) (= .cse115 |c_ULTIMATE.start_main_~a~0#1.base|) (= .cse115 (select (select (store (store .cse114 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse116 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)) (= .cse115 .cse116))))))) (or .cse16 (forall ((v_prenex_129 (Array Int Int)) (v_arrayElimArr_21 (Array Int Int)) (v_arrayElimArr_19 (Array Int Int)) (|ULTIMATE.start_main_~p~0#1.offset| Int) (v_subst_3 Int) (v_subst_2 Int) (v_ArrVal_981 (Array Int Int)) (v_arrayElimArr_20 (Array Int Int)) (v_prenex_127 (Array Int Int)) (v_prenex_128 (Array Int Int))) (let ((.cse117 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|))) (.cse119 (select v_arrayElimArr_21 (+ 4 v_subst_3))) (.cse121 (+ 4 v_subst_2))) (let ((.cse118 (select v_arrayElimArr_19 .cse121)) (.cse120 (select (select (store (store .cse117 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse119 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (not (= (select (select (store (store .cse117 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_19) .cse118 v_prenex_129) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse119) (= .cse119 .cse120) (not (= (select v_arrayElimArr_20 .cse121) 0)) (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_127) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_20) .cse118 v_prenex_128) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.offset|) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse118) (= .cse118 .cse120)))))) (forall ((v_arrayElimArr_21 (Array Int Int)) (|ULTIMATE.start_main_~p~0#1.offset| Int) (v_subst_3 Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse123 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (let ((.cse122 (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse123 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (= |c_ULTIMATE.start_main_~p~0#1.base| .cse122) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse123) (= .cse123 |c_ULTIMATE.start_main_~a~0#1.base|) (= |c_ULTIMATE.start_main_~a~0#1.base| .cse122))))) (forall ((v_arrayElimArr_21 (Array Int Int)) (v_subst_3 Int)) (let ((.cse124 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (or (= |c_ULTIMATE.start_main_~p~0#1.base| .cse124) (forall ((|ULTIMATE.start_main_~p~0#1.offset| Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse126 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)))) (let ((.cse128 (select (select (store (store .cse126 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse124 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (forall ((v_arrayElimArr_22 (Array Int Int)) (v_arrayElimArr_23 (Array Int Int)) (v_ArrVal_969 (Array Int Int)) (v_ArrVal_980 (Array Int Int)) (v_subst_1 Int) (v_prenex_126 (Array Int Int))) (let ((.cse125 (+ 4 v_subst_1))) (let ((.cse127 (select v_arrayElimArr_22 .cse125))) (or (not (= (select v_arrayElimArr_23 .cse125) 0)) (not (= (select (select (store (store .cse126 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_22) .cse127 v_prenex_126) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~a~0#1.offset| (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_969) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_23) .cse127 v_ArrVal_980) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse127) (= .cse127 |c_ULTIMATE.start_main_~a~0#1.base|) (= .cse127 .cse128))))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse128)))))))) (or (forall ((v_prenex_129 (Array Int Int)) (v_arrayElimArr_21 (Array Int Int)) (v_arrayElimArr_19 (Array Int Int)) (|ULTIMATE.start_main_~p~0#1.offset| Int) (v_subst_3 Int) (v_subst_2 Int) (v_ArrVal_981 (Array Int Int)) (v_arrayElimArr_20 (Array Int Int)) (v_prenex_127 (Array Int Int)) (v_prenex_128 (Array Int Int))) (let ((.cse133 (+ 4 v_subst_2)) (.cse129 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|))) (.cse132 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (let ((.cse131 (select (select (store (store .cse129 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse132 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)) (.cse130 (select v_arrayElimArr_19 .cse133))) (or (not (= (select (select (store (store .cse129 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_19) .cse130 v_prenex_129) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse131) (= .cse132 .cse130) (= .cse132 .cse131) (not (= (select v_arrayElimArr_20 .cse133) 0)) (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_127) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_20) .cse130 v_prenex_128) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.offset|) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse130))))) .cse16) (or (and (forall ((v_arrayElimArr_21 (Array Int Int)) (v_subst_3 Int)) (let ((.cse137 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (or (forall ((|ULTIMATE.start_main_~p~0#1.offset| Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse134 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)))) (or (forall ((v_prenex_129 (Array Int Int)) (v_arrayElimArr_19 (Array Int Int)) (v_subst_2 Int) (v_prenex_127 (Array Int Int)) (v_arrayElimArr_20 (Array Int Int)) (v_prenex_128 (Array Int Int))) (let ((.cse136 (+ 4 v_subst_2))) (let ((.cse135 (select v_arrayElimArr_19 .cse136))) (or (not (= (select (select (store (store .cse134 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_19) .cse135 v_prenex_129) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (not (= (select v_arrayElimArr_20 .cse136) 0)) (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_127) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_20) .cse135 v_prenex_128) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.offset|) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse135))))) (= |c_ULTIMATE.start_main_~p~0#1.base| (select (select (store (store .cse134 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse137 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse137)))) (forall ((v_arrayElimArr_21 (Array Int Int)) (v_subst_3 Int)) (let ((.cse142 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (or (forall ((|ULTIMATE.start_main_~p~0#1.offset| Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse138 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)))) (let ((.cse140 (select (select (store (store .cse138 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse142 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (forall ((v_subst_2 Int) (v_arrayElimArr_20 (Array Int Int))) (let ((.cse141 (+ 4 v_subst_2))) (or (forall ((v_prenex_129 (Array Int Int)) (v_arrayElimArr_19 (Array Int Int)) (v_prenex_127 (Array Int Int)) (v_prenex_128 (Array Int Int))) (let ((.cse139 (select v_arrayElimArr_19 .cse141))) (or (not (= (select (select (store (store .cse138 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_19) .cse139 v_prenex_129) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_127) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_20) .cse139 v_prenex_128) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.offset|) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse139) (= .cse139 .cse140)))) (not (= (select v_arrayElimArr_20 .cse141) 0))))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse140))))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse142))))) .cse16) (forall ((v_arrayElimArr_21 (Array Int Int)) (|ULTIMATE.start_main_~p~0#1.offset| Int) (v_subst_3 Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse144 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|))) (.cse147 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (let ((.cse146 (select (select (store (store .cse144 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse147 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (forall ((v_arrayElimArr_22 (Array Int Int)) (v_arrayElimArr_23 (Array Int Int)) (v_ArrVal_969 (Array Int Int)) (v_ArrVal_980 (Array Int Int)) (v_subst_1 Int) (v_prenex_126 (Array Int Int))) (let ((.cse143 (+ 4 v_subst_1))) (let ((.cse145 (select v_arrayElimArr_22 .cse143))) (or (not (= (select v_arrayElimArr_23 .cse143) 0)) (not (= (select (select (store (store .cse144 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_22) .cse145 v_prenex_126) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~a~0#1.offset| (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_969) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_23) .cse145 v_ArrVal_980) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse145) (= .cse145 |c_ULTIMATE.start_main_~a~0#1.base|) (= .cse145 .cse146))))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse147) (= .cse147 .cse146))))) (or (and (forall ((v_arrayElimArr_21 (Array Int Int)) (v_subst_3 Int)) (let ((.cse148 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (or (= |c_ULTIMATE.start_main_~p~0#1.base| .cse148) (forall ((|ULTIMATE.start_main_~p~0#1.offset| Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse149 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)))) (let ((.cse152 (select (select (store (store .cse149 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse148 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (forall ((v_prenex_129 (Array Int Int)) (v_arrayElimArr_19 (Array Int Int)) (v_subst_2 Int) (v_arrayElimArr_20 (Array Int Int)) (v_prenex_127 (Array Int Int)) (v_prenex_128 (Array Int Int))) (let ((.cse151 (+ 4 v_subst_2))) (let ((.cse150 (select v_arrayElimArr_19 .cse151))) (or (not (= (select (select (store (store .cse149 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_19) .cse150 v_prenex_129) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (not (= (select v_arrayElimArr_20 .cse151) 0)) (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_127) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_20) .cse150 v_prenex_128) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.offset|) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse150) (= .cse150 .cse152))))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse152)))))))) (forall ((v_arrayElimArr_21 (Array Int Int)) (v_subst_3 Int)) (let ((.cse153 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (or (= |c_ULTIMATE.start_main_~p~0#1.base| .cse153) (forall ((|ULTIMATE.start_main_~p~0#1.offset| Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse156 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)))) (let ((.cse154 (select (select (store (store .cse156 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse153 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (= |c_ULTIMATE.start_main_~p~0#1.base| .cse154) (forall ((v_prenex_316 (Array Int Int)) (v_prenex_317 (Array Int Int)) (v_prenex_319 (Array Int Int)) (v_prenex_320 (Array Int Int)) (v_prenex_321 (Array Int Int)) (v_prenex_318 Int)) (let ((.cse157 (+ v_prenex_318 4))) (let ((.cse155 (select v_prenex_317 .cse157))) (or (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_319) |c_ULTIMATE.start_main_~t~0#1.base| v_prenex_320) .cse155 v_prenex_321) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.offset|) (= .cse153 .cse155) (= .cse154 .cse155) (not (= (select (select (store (store .cse156 |c_ULTIMATE.start_main_~t~0#1.base| v_prenex_317) .cse155 v_prenex_316) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse155) (not (= (select v_prenex_320 .cse157) 0)))))))))))))) .cse16) (forall ((v_arrayElimArr_21 (Array Int Int)) (v_subst_3 Int)) (let ((.cse162 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (or (forall ((|ULTIMATE.start_main_~p~0#1.offset| Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse159 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)))) (let ((.cse161 (select (select (store (store .cse159 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse162 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (forall ((v_arrayElimArr_22 (Array Int Int)) (v_arrayElimArr_23 (Array Int Int)) (v_ArrVal_969 (Array Int Int)) (v_ArrVal_980 (Array Int Int)) (v_subst_1 Int) (v_prenex_126 (Array Int Int))) (let ((.cse158 (+ 4 v_subst_1))) (let ((.cse160 (select v_arrayElimArr_22 .cse158))) (or (not (= (select v_arrayElimArr_23 .cse158) 0)) (not (= (select (select (store (store .cse159 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_22) .cse160 v_prenex_126) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~a~0#1.offset| (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_969) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_23) .cse160 v_ArrVal_980) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse160) (= .cse160 |c_ULTIMATE.start_main_~a~0#1.base|) (= .cse160 .cse161))))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse161) (= .cse162 .cse161))))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse162)))) (forall ((v_arrayElimArr_22 (Array Int Int)) (v_arrayElimArr_21 (Array Int Int)) (v_arrayElimArr_23 (Array Int Int)) (v_ArrVal_969 (Array Int Int)) (v_ArrVal_980 (Array Int Int)) (|ULTIMATE.start_main_~p~0#1.offset| Int) (v_subst_3 Int) (v_ArrVal_981 (Array Int Int)) (v_subst_1 Int) (v_prenex_126 (Array Int Int))) (let ((.cse163 (+ 4 v_subst_1))) (let ((.cse164 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|))) (.cse165 (select v_arrayElimArr_22 .cse163)) (.cse166 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (or (not (= (select v_arrayElimArr_23 .cse163) 0)) (not (= (select (select (store (store .cse164 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_22) .cse165 v_prenex_126) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~a~0#1.offset| (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_969) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_23) .cse165 v_ArrVal_980) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse165) (= .cse165 |c_ULTIMATE.start_main_~a~0#1.base|) (= .cse165 (select (select (store (store .cse164 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse166 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)) (= .cse165 .cse166))))) (or (forall ((v_prenex_316 (Array Int Int)) (v_prenex_317 (Array Int Int)) (v_arrayElimArr_21 (Array Int Int)) (v_prenex_319 (Array Int Int)) (v_prenex_320 (Array Int Int)) (v_prenex_321 (Array Int Int)) (|ULTIMATE.start_main_~p~0#1.offset| Int) (v_subst_3 Int) (v_prenex_318 Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse171 (+ v_prenex_318 4)) (.cse170 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|))) (.cse168 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (let ((.cse169 (select (select (store (store .cse170 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse168 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)) (.cse167 (select v_prenex_317 .cse171))) (or (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_319) |c_ULTIMATE.start_main_~t~0#1.base| v_prenex_320) .cse167 v_prenex_321) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.offset|) (= .cse168 .cse167) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse169) (= .cse169 .cse167) (not (= (select (select (store (store .cse170 |c_ULTIMATE.start_main_~t~0#1.base| v_prenex_317) .cse167 v_prenex_316) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse167) (not (= (select v_prenex_320 .cse171) 0)))))) .cse16) (or (and (forall ((v_arrayElimArr_21 (Array Int Int)) (v_subst_3 Int)) (let ((.cse176 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (or (forall ((|ULTIMATE.start_main_~p~0#1.offset| Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse172 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)))) (let ((.cse174 (select (select (store (store .cse172 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse176 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (forall ((v_subst_2 Int) (v_arrayElimArr_20 (Array Int Int))) (let ((.cse175 (+ 4 v_subst_2))) (or (forall ((v_prenex_129 (Array Int Int)) (v_arrayElimArr_19 (Array Int Int)) (v_prenex_127 (Array Int Int)) (v_prenex_128 (Array Int Int))) (let ((.cse173 (select v_arrayElimArr_19 .cse175))) (or (not (= (select (select (store (store .cse172 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_19) .cse173 v_prenex_129) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_127) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_20) .cse173 v_prenex_128) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.offset|) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse173) (= .cse173 .cse174)))) (not (= (select v_arrayElimArr_20 .cse175) 0))))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse174) (= .cse176 .cse174))))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse176)))) (forall ((v_arrayElimArr_21 (Array Int Int)) (v_subst_3 Int)) (let ((.cse181 (select v_arrayElimArr_21 (+ 4 v_subst_3)))) (or (forall ((|ULTIMATE.start_main_~p~0#1.offset| Int) (v_ArrVal_981 (Array Int Int))) (let ((.cse177 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse5 (+ |ULTIMATE.start_main_~p~0#1.offset| 4) |c_ULTIMATE.start_main_~t~0#1.base|)))) (let ((.cse180 (select (select (store (store .cse177 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_21) .cse181 v_ArrVal_981) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (or (forall ((v_prenex_129 (Array Int Int)) (v_arrayElimArr_19 (Array Int Int)) (v_subst_2 Int) (v_prenex_127 (Array Int Int)) (v_arrayElimArr_20 (Array Int Int)) (v_prenex_128 (Array Int Int))) (let ((.cse179 (+ 4 v_subst_2))) (let ((.cse178 (select v_arrayElimArr_19 .cse179))) (or (not (= (select (select (store (store .cse177 |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_19) .cse178 v_prenex_129) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.base|)) (not (= (select v_arrayElimArr_20 .cse179) 0)) (= (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_prenex_127) |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_20) .cse178 v_prenex_128) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) |c_ULTIMATE.start_main_~a~0#1.offset|) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse178))))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse180) (= .cse181 .cse180))))) (= |c_ULTIMATE.start_main_~p~0#1.base| .cse181))))) .cse16))))) is different from true