./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/list-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-properties/list-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 657efb2af25c5cc2c0afb2bbf76276caecae7904494acc21657e1ac1176685b7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:37:15,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:37:15,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:37:15,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:37:15,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:37:15,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:37:15,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:37:15,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:37:15,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:37:15,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:37:15,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:37:15,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:37:15,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:37:15,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:37:15,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:37:15,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:37:15,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:37:15,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:37:15,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:37:15,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:37:15,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:37:15,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:37:15,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:37:15,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:37:15,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:37:15,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:37:15,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:37:15,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:37:15,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:37:15,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:37:15,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:37:15,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:37:15,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:37:15,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:37:15,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:37:15,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:37:15,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:37:15,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:37:15,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:37:15,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:37:15,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:37:15,366 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:37:15,416 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:37:15,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:37:15,418 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:37:15,418 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:37:15,419 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:37:15,419 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:37:15,420 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:37:15,420 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:37:15,420 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:37:15,420 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:37:15,421 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:37:15,422 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:37:15,422 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:37:15,422 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:37:15,422 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:37:15,423 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:37:15,423 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:37:15,423 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:37:15,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:37:15,424 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:37:15,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:37:15,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:37:15,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:37:15,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:37:15,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:37:15,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:37:15,426 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:37:15,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:37:15,426 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:37:15,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:37:15,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:37:15,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:37:15,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:37:15,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:37:15,428 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:37:15,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:37:15,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:37:15,429 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:37:15,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:37:15,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:37:15,429 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:37:15,429 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_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 657efb2af25c5cc2c0afb2bbf76276caecae7904494acc21657e1ac1176685b7 [2022-11-03 02:37:15,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:37:15,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:37:15,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:37:15,812 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:37:15,813 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:37:15,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/list-properties/list-1.i [2022-11-03 02:37:15,917 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/data/2cfd9a4af/a4d0b4d22ecb4d9e9d4842706d56e6fb/FLAG72e0a17bb [2022-11-03 02:37:16,513 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:37:16,514 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/sv-benchmarks/c/list-properties/list-1.i [2022-11-03 02:37:16,526 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/data/2cfd9a4af/a4d0b4d22ecb4d9e9d4842706d56e6fb/FLAG72e0a17bb [2022-11-03 02:37:16,816 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/data/2cfd9a4af/a4d0b4d22ecb4d9e9d4842706d56e6fb [2022-11-03 02:37:16,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:37:16,823 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:37:16,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:37:16,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:37:16,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:37:16,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:37:16" (1/1) ... [2022-11-03 02:37:16,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67b31cb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:16, skipping insertion in model container [2022-11-03 02:37:16,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:37:16" (1/1) ... [2022-11-03 02:37:16,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:37:16,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:37:17,401 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/sv-benchmarks/c/list-properties/list-1.i[23408,23421] [2022-11-03 02:37:17,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:37:17,418 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:37:17,486 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/sv-benchmarks/c/list-properties/list-1.i[23408,23421] [2022-11-03 02:37:17,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:37:17,534 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:37:17,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:17 WrapperNode [2022-11-03 02:37:17,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:37:17,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:37:17,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:37:17,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:37:17,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:17" (1/1) ... [2022-11-03 02:37:17,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:17" (1/1) ... [2022-11-03 02:37:17,620 INFO L138 Inliner]: procedures = 124, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2022-11-03 02:37:17,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:37:17,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:37:17,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:37:17,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:37:17,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:17" (1/1) ... [2022-11-03 02:37:17,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:17" (1/1) ... [2022-11-03 02:37:17,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:17" (1/1) ... [2022-11-03 02:37:17,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:17" (1/1) ... [2022-11-03 02:37:17,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:17" (1/1) ... [2022-11-03 02:37:17,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:17" (1/1) ... [2022-11-03 02:37:17,652 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:17" (1/1) ... [2022-11-03 02:37:17,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:17" (1/1) ... [2022-11-03 02:37:17,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:37:17,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:37:17,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:37:17,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:37:17,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:17" (1/1) ... [2022-11-03 02:37:17,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:37:17,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:37:17,695 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:37:17,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:37:17,753 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-11-03 02:37:17,753 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-11-03 02:37:17,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:37:17,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:37:17,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:37:17,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:37:17,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:37:17,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:37:17,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:37:17,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:37:17,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:37:17,915 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:37:17,918 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:37:17,969 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-11-03 02:37:18,160 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:37:18,184 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:37:18,184 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-03 02:37:18,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:37:18 BoogieIcfgContainer [2022-11-03 02:37:18,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:37:18,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:37:18,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:37:18,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:37:18,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:37:16" (1/3) ... [2022-11-03 02:37:18,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f220d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:37:18, skipping insertion in model container [2022-11-03 02:37:18,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:17" (2/3) ... [2022-11-03 02:37:18,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f220d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:37:18, skipping insertion in model container [2022-11-03 02:37:18,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:37:18" (3/3) ... [2022-11-03 02:37:18,204 INFO L112 eAbstractionObserver]: Analyzing ICFG list-1.i [2022-11-03 02:37:18,243 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:37:18,243 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:37:18,318 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:37:18,336 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@8d42f83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:37:18,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:37:18,345 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 25 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:18,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 02:37:18,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:18,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:18,356 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:18,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:18,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1831991699, now seen corresponding path program 1 times [2022-11-03 02:37:18,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:18,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155495859] [2022-11-03 02:37:18,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:18,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:18,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:18,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:18,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155495859] [2022-11-03 02:37:18,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155495859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:18,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:37:18,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:37:18,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031606118] [2022-11-03 02:37:18,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:18,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:37:18,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:18,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:37:18,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:37:18,738 INFO L87 Difference]: Start difference. First operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 25 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:18,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:18,786 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2022-11-03 02:37:18,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:37:18,789 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 02:37:18,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:18,804 INFO L225 Difference]: With dead ends: 45 [2022-11-03 02:37:18,804 INFO L226 Difference]: Without dead ends: 20 [2022-11-03 02:37:18,809 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 [2022-11-03 02:37:18,815 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:18,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:37:18,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-03 02:37:18,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-03 02:37:18,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 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) [2022-11-03 02:37:18,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-11-03 02:37:18,859 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 11 [2022-11-03 02:37:18,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:18,860 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-11-03 02:37:18,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:18,862 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-11-03 02:37:18,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 02:37:18,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:18,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:18,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:37:18,867 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:18,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:18,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1175607717, now seen corresponding path program 1 times [2022-11-03 02:37:18,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:18,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469165893] [2022-11-03 02:37:18,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:18,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:19,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:19,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:19,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469165893] [2022-11-03 02:37:19,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469165893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:19,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:37:19,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:37:19,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761548686] [2022-11-03 02:37:19,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:19,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:37:19,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:19,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:37:19,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:37:19,662 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:19,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:19,839 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2022-11-03 02:37:19,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:37:19,840 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-03 02:37:19,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:19,843 INFO L225 Difference]: With dead ends: 45 [2022-11-03 02:37:19,843 INFO L226 Difference]: Without dead ends: 41 [2022-11-03 02:37:19,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:37:19,846 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 51 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:19,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 46 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:37:19,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-03 02:37:19,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 29. [2022-11-03 02:37:19,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:19,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-11-03 02:37:19,856 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 15 [2022-11-03 02:37:19,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:19,857 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-11-03 02:37:19,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:19,858 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-11-03 02:37:19,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 02:37:19,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:19,859 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:19,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:37:19,860 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:19,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:19,861 INFO L85 PathProgramCache]: Analyzing trace with hash 231293632, now seen corresponding path program 1 times [2022-11-03 02:37:19,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:19,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445255829] [2022-11-03 02:37:19,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:19,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:20,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:20,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:20,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445255829] [2022-11-03 02:37:20,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445255829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:20,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:37:20,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:37:20,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512695355] [2022-11-03 02:37:20,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:20,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:37:20,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:20,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:37:20,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:37:20,135 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:20,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:20,330 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2022-11-03 02:37:20,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:37:20,331 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-03 02:37:20,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:20,335 INFO L225 Difference]: With dead ends: 47 [2022-11-03 02:37:20,335 INFO L226 Difference]: Without dead ends: 39 [2022-11-03 02:37:20,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:37:20,343 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 47 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:20,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 50 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:37:20,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-03 02:37:20,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 27. [2022-11-03 02:37:20,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:20,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-11-03 02:37:20,355 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 17 [2022-11-03 02:37:20,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:20,356 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-11-03 02:37:20,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:20,356 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-11-03 02:37:20,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 02:37:20,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:20,357 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:20,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:37:20,358 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:20,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:20,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1255996608, now seen corresponding path program 1 times [2022-11-03 02:37:20,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:20,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614749045] [2022-11-03 02:37:20,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:20,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:20,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:20,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:20,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614749045] [2022-11-03 02:37:20,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614749045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:20,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:37:20,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:37:20,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569807101] [2022-11-03 02:37:20,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:20,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:37:20,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:20,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:37:20,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:37:20,586 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:20,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:20,720 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2022-11-03 02:37:20,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:37:20,721 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-03 02:37:20,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:20,725 INFO L225 Difference]: With dead ends: 47 [2022-11-03 02:37:20,725 INFO L226 Difference]: Without dead ends: 36 [2022-11-03 02:37:20,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:37:20,733 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 50 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:20,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 39 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:37:20,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-03 02:37:20,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 24. [2022-11-03 02:37:20,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:20,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-11-03 02:37:20,739 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 17 [2022-11-03 02:37:20,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:20,739 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-03 02:37:20,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:20,740 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-11-03 02:37:20,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 02:37:20,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:20,741 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:20,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:37:20,741 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:20,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:20,742 INFO L85 PathProgramCache]: Analyzing trace with hash -423740148, now seen corresponding path program 1 times [2022-11-03 02:37:20,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:20,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163664432] [2022-11-03 02:37:20,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:20,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:21,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:21,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:21,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163664432] [2022-11-03 02:37:21,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163664432] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:37:21,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717013775] [2022-11-03 02:37:21,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:21,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:37:21,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:37:21,507 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:37:21,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:37:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:21,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-03 02:37:21,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:21,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:21,840 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:37:21,863 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 02:37:21,864 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:21,924 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-03 02:37:22,016 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:22,051 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:22,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:22,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:37:22,109 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_84 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_84) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) is different from false [2022-11-03 02:37:22,150 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_84 (Array Int Int)) (v_ArrVal_82 Int)) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_ArrVal_82)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_84) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) is different from false [2022-11-03 02:37:22,194 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:37:22,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 29 [2022-11-03 02:37:22,216 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:37:22,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 33 [2022-11-03 02:37:22,231 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-03 02:37:22,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-03 02:37:22,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717013775] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:37:22,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1796153994] [2022-11-03 02:37:22,469 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-03 02:37:22,469 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:37:22,474 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:37:22,481 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:37:22,481 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:37:22,585 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:37:22,585 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 02:37:22,604 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:22,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:22,671 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:22,687 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:22,764 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-03 02:37:22,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-03 02:37:22,784 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:22,797 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-03 02:37:22,843 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2022-11-03 02:37:22,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:22,859 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-03 02:37:22,880 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 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 [2022-11-03 02:37:23,056 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:37:23,057 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 252 treesize of output 234 [2022-11-03 02:37:23,234 INFO L356 Elim1Store]: treesize reduction 120, result has 27.3 percent of original size [2022-11-03 02:37:23,235 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 248 treesize of output 276 [2022-11-03 02:37:23,309 INFO L356 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2022-11-03 02:37:23,310 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 241 treesize of output 250 [2022-11-03 02:37:23,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:23,408 INFO L356 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-03 02:37:23,409 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 244 treesize of output 245 [2022-11-03 02:37:23,459 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:37:23,460 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 244 treesize of output 226 [2022-11-03 02:37:23,858 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:37:23,859 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 294 treesize of output 249 [2022-11-03 02:37:23,910 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:37:23,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 240 treesize of output 237 [2022-11-03 02:37:23,945 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:24,012 INFO L356 Elim1Store]: treesize reduction 146, result has 13.1 percent of original size [2022-11-03 02:37:24,013 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 241 treesize of output 226 [2022-11-03 02:37:24,263 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:24,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:24,275 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:24,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:24,290 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:37:24,311 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:24,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:24,334 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:37:24,373 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:37:24,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:24,386 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:24,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:24,401 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:24,425 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:24,437 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:24,448 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:37:24,482 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:24,489 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:24,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:37:24,592 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:37:26,434 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '542#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (exists ((|v_ULTIMATE.start_main_~p~0#1.offset_27| Int) (|v_ULTIMATE.start_main_~p~0#1.base_29| Int)) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~p~0#1.base_29|) |v_ULTIMATE.start_main_~p~0#1.offset_27|) 3)) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 2)) (= |ULTIMATE.start_main_~a~0#1.offset| |ULTIMATE.start_main_~p~0#1.offset|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 3)) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 1)) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~a~0#1.base| |ULTIMATE.start_main_~p~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:37:26,434 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:37:26,434 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:37:26,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-11-03 02:37:26,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513638046] [2022-11-03 02:37:26,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:37:26,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:37:26,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:26,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:37:26,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=553, Unknown=2, NotChecked=98, Total=756 [2022-11-03 02:37:26,438 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:26,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:26,809 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2022-11-03 02:37:26,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:37:26,810 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-03 02:37:26,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:26,811 INFO L225 Difference]: With dead ends: 46 [2022-11-03 02:37:26,811 INFO L226 Difference]: Without dead ends: 42 [2022-11-03 02:37:26,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=129, Invalid=747, Unknown=2, NotChecked=114, Total=992 [2022-11-03 02:37:26,813 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 34 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:26,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 99 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 101 Invalid, 0 Unknown, 78 Unchecked, 0.2s Time] [2022-11-03 02:37:26,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-03 02:37:26,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2022-11-03 02:37:26,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:26,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-11-03 02:37:26,819 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 19 [2022-11-03 02:37:26,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:26,820 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-11-03 02:37:26,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:26,820 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-11-03 02:37:26,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 02:37:26,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:26,821 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:26,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:27,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:37:27,035 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:27,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:27,036 INFO L85 PathProgramCache]: Analyzing trace with hash 439661516, now seen corresponding path program 1 times [2022-11-03 02:37:27,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:27,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689389745] [2022-11-03 02:37:27,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:27,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:27,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:27,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:27,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689389745] [2022-11-03 02:37:27,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689389745] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:37:27,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724332138] [2022-11-03 02:37:27,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:27,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:37:27,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:37:27,610 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:37:27,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:37:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:27,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-03 02:37:27,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:27,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:27,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:37:27,810 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 02:37:27,811 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:27,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:27,876 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 02:37:27,938 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:27,965 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:27,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:27,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:37:28,010 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_136 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_136) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2022-11-03 02:37:28,036 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_135 Int) (v_ArrVal_136 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_ArrVal_135)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_136) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2022-11-03 02:37:28,064 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:37:28,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 29 [2022-11-03 02:37:28,075 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:37:28,076 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 33 [2022-11-03 02:37:28,082 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-03 02:37:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-03 02:37:28,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724332138] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:37:28,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [969740524] [2022-11-03 02:37:28,184 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-03 02:37:28,184 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:37:28,185 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:37:28,185 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:37:28,186 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:37:28,239 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-03 02:37:28,239 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 30 [2022-11-03 02:37:28,283 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:37:28,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 02:37:28,379 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-03 02:37:28,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-03 02:37:28,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:28,397 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:28,409 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-03 02:37:28,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:28,433 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:28,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:28,465 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-03 02:37:28,479 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 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 [2022-11-03 02:37:28,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2022-11-03 02:37:28,622 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:37:28,623 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 252 treesize of output 234 [2022-11-03 02:37:28,666 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:37:28,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 252 treesize of output 234 [2022-11-03 02:37:28,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:28,742 INFO L356 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-03 02:37:28,743 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 248 treesize of output 249 [2022-11-03 02:37:28,839 INFO L356 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2022-11-03 02:37:28,840 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 239 treesize of output 248 [2022-11-03 02:37:28,976 INFO L356 Elim1Store]: treesize reduction 128, result has 22.4 percent of original size [2022-11-03 02:37:28,977 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 242 treesize of output 262 [2022-11-03 02:37:29,328 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:37:29,329 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 294 treesize of output 249 [2022-11-03 02:37:29,364 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:29,423 INFO L356 Elim1Store]: treesize reduction 146, result has 13.1 percent of original size [2022-11-03 02:37:29,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 253 treesize of output 238 [2022-11-03 02:37:29,478 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:37:29,479 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 240 treesize of output 237 [2022-11-03 02:37:29,740 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:29,746 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:29,751 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:29,756 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:37:29,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:29,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:29,789 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:29,797 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:37:29,838 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:29,844 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:29,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:37:29,947 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:29,953 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:29,959 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:29,966 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:29,973 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:37:29,990 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:30,001 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:30,009 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:37:30,021 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:37:31,632 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '792#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 2)) (exists ((|v_ULTIMATE.start_main_~p~0#1.offset_34| Int) (|v_ULTIMATE.start_main_~p~0#1.base_38| Int)) (= 3 (select (select |#memory_int| |v_ULTIMATE.start_main_~p~0#1.base_38|) |v_ULTIMATE.start_main_~p~0#1.offset_34|))) (= |ULTIMATE.start_main_~a~0#1.offset| |ULTIMATE.start_main_~p~0#1.offset|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 3)) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 1)) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~a~0#1.base| |ULTIMATE.start_main_~p~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:37:31,632 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:37:31,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:37:31,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 20 [2022-11-03 02:37:31,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379101393] [2022-11-03 02:37:31,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:37:31,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-03 02:37:31,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:31,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-03 02:37:31,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=849, Unknown=2, NotChecked=122, Total=1122 [2022-11-03 02:37:31,635 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:32,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:32,088 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2022-11-03 02:37:32,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:37:32,089 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-03 02:37:32,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:32,090 INFO L225 Difference]: With dead ends: 71 [2022-11-03 02:37:32,090 INFO L226 Difference]: Without dead ends: 65 [2022-11-03 02:37:32,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=198, Invalid=1068, Unknown=2, NotChecked=138, Total=1406 [2022-11-03 02:37:32,092 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 68 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 144 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:32,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 236 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 190 Invalid, 0 Unknown, 144 Unchecked, 0.2s Time] [2022-11-03 02:37:32,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-03 02:37:32,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 42. [2022-11-03 02:37:32,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 41 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:32,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2022-11-03 02:37:32,103 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 19 [2022-11-03 02:37:32,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:32,111 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2022-11-03 02:37:32,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:32,111 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2022-11-03 02:37:32,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 02:37:32,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:32,112 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:32,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 02:37:32,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:37:32,331 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:32,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:32,332 INFO L85 PathProgramCache]: Analyzing trace with hash 856287335, now seen corresponding path program 1 times [2022-11-03 02:37:32,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:32,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387951144] [2022-11-03 02:37:32,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:32,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:32,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:32,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:32,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387951144] [2022-11-03 02:37:32,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387951144] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:37:32,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207132087] [2022-11-03 02:37:32,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:32,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:37:32,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:37:32,773 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:37:32,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:37:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:32,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-03 02:37:32,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:32,886 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:32,946 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 02:37:32,947 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:32,981 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:32,988 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:33,051 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 02:37:33,052 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 61 [2022-11-03 02:37:33,059 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-03 02:37:33,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-03 02:37:33,107 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2022-11-03 02:37:33,112 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 11 [2022-11-03 02:37:33,123 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:33,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:33,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:37:33,151 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:33,160 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (and (forall ((v_ArrVal_189 (Array Int Int))) (= |c_ULTIMATE.start_main_~p~0#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_189) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))) (forall ((v_ArrVal_186 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_186) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) |c_ULTIMATE.start_main_~p~0#1.base|)))) is different from false [2022-11-03 02:37:33,187 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:37:33,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-03 02:37:33,197 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:37:33,198 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 31 [2022-11-03 02:37:33,203 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:37:33,228 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-03 02:37:33,228 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2022-11-03 02:37:33,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-03 02:37:33,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207132087] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:37:33,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1989705570] [2022-11-03 02:37:33,394 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-03 02:37:33,395 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:37:33,395 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:37:33,395 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:37:33,396 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:37:33,437 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-03 02:37:33,438 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 30 [2022-11-03 02:37:33,486 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:37:33,486 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 02:37:33,530 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:33,581 INFO L356 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-11-03 02:37:33,581 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 22 treesize of output 38 [2022-11-03 02:37:33,653 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-03 02:37:33,653 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-03 02:37:33,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:33,670 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:33,682 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:33,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 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 [2022-11-03 02:37:33,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:33,744 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-03 02:37:33,760 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2022-11-03 02:37:33,853 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:37:33,853 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 252 treesize of output 234 [2022-11-03 02:37:33,873 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:33,932 INFO L356 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-03 02:37:33,933 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 248 treesize of output 249 [2022-11-03 02:37:34,076 INFO L356 Elim1Store]: treesize reduction 120, result has 27.3 percent of original size [2022-11-03 02:37:34,077 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 244 treesize of output 272 [2022-11-03 02:37:34,133 INFO L356 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2022-11-03 02:37:34,133 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 237 treesize of output 246 [2022-11-03 02:37:34,172 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:37:34,173 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 244 treesize of output 226 [2022-11-03 02:37:34,972 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:37:34,973 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 645 treesize of output 546 [2022-11-03 02:37:35,028 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:37:35,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 537 treesize of output 522 [2022-11-03 02:37:35,052 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:35,114 INFO L356 Elim1Store]: treesize reduction 146, result has 13.1 percent of original size [2022-11-03 02:37:35,114 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 526 treesize of output 487 [2022-11-03 02:37:35,794 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:37:35,805 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:35,819 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:35,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:35,833 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:35,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:35,860 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:35,870 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:37:35,898 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:35,902 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:37:35,942 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:35,948 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:35,953 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:35,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:35,988 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:35,995 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:37:36,022 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:36,028 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:37:36,034 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:36,147 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:37:37,305 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1089#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 3)) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:37:37,306 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:37:37,306 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:37:37,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-11-03 02:37:37,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294443328] [2022-11-03 02:37:37,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:37:37,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 02:37:37,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:37,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 02:37:37,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=431, Unknown=1, NotChecked=42, Total=552 [2022-11-03 02:37:37,308 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:37,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:37,653 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2022-11-03 02:37:37,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:37:37,654 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 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 21 [2022-11-03 02:37:37,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:37,655 INFO L225 Difference]: With dead ends: 54 [2022-11-03 02:37:37,655 INFO L226 Difference]: Without dead ends: 50 [2022-11-03 02:37:37,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 44 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=102, Invalid=657, Unknown=1, NotChecked=52, Total=812 [2022-11-03 02:37:37,656 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 52 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:37,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 109 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 152 Invalid, 0 Unknown, 55 Unchecked, 0.2s Time] [2022-11-03 02:37:37,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-03 02:37:37,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2022-11-03 02:37:37,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:37,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2022-11-03 02:37:37,678 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 21 [2022-11-03 02:37:37,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:37,679 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2022-11-03 02:37:37,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:37,679 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2022-11-03 02:37:37,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 02:37:37,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:37,682 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:37,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:37,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:37:37,896 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:37,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:37,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1692915454, now seen corresponding path program 2 times [2022-11-03 02:37:37,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:37,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7251724] [2022-11-03 02:37:37,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:37,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:38,344 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:38,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:38,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7251724] [2022-11-03 02:37:38,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7251724] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:37:38,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420023582] [2022-11-03 02:37:38,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:37:38,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:37:38,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:37:38,347 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:37:38,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:37:38,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 02:37:38,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:37:38,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-03 02:37:38,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:38,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:38,590 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 02:37:38,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:38,638 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:38,645 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:38,713 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 02:37:38,714 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 49 [2022-11-03 02:37:38,720 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:38,724 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-11-03 02:37:38,783 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:38,787 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:38,794 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:38,799 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:38,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:37:38,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 52 treesize of output 30 [2022-11-03 02:37:38,876 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (and (forall ((v_ArrVal_240 (Array Int Int))) (= |c_ULTIMATE.start_main_~p~0#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_240) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))) (forall ((v_ArrVal_242 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_242) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) |c_ULTIMATE.start_main_~p~0#1.base|)))) is different from false [2022-11-03 02:37:38,900 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:37:38,900 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-03 02:37:38,909 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:37:38,910 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 31 [2022-11-03 02:37:38,915 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:37:38,935 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-03 02:37:38,936 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2022-11-03 02:37:39,108 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-03 02:37:39,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420023582] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:37:39,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1733620900] [2022-11-03 02:37:39,111 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-03 02:37:39,111 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:37:39,112 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:37:39,112 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:37:39,112 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:37:39,153 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-03 02:37:39,154 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 30 [2022-11-03 02:37:39,201 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:37:39,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 02:37:39,298 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-03 02:37:39,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-03 02:37:39,313 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-03 02:37:39,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:39,326 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:39,336 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:39,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:39,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2022-11-03 02:37:39,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:39,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-03 02:37:39,420 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 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 [2022-11-03 02:37:39,498 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:37:39,499 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 252 treesize of output 234 [2022-11-03 02:37:39,590 INFO L356 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2022-11-03 02:37:39,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 243 treesize of output 252 [2022-11-03 02:37:39,729 INFO L356 Elim1Store]: treesize reduction 128, result has 22.4 percent of original size [2022-11-03 02:37:39,729 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 246 treesize of output 266 [2022-11-03 02:37:39,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:39,825 INFO L356 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-03 02:37:39,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 244 treesize of output 245 [2022-11-03 02:37:39,859 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:37:39,859 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 244 treesize of output 226 [2022-11-03 02:37:40,455 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:37:40,456 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 560 treesize of output 461 [2022-11-03 02:37:40,509 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:37:40,510 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 452 treesize of output 437 [2022-11-03 02:37:40,542 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:40,607 INFO L356 Elim1Store]: treesize reduction 146, result has 13.1 percent of original size [2022-11-03 02:37:40,608 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 441 treesize of output 410 [2022-11-03 02:37:40,892 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:40,896 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:40,903 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:40,908 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:37:40,913 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:40,929 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:40,940 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:40,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:37:40,988 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:37:40,994 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:40,999 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:41,005 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:41,011 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:41,028 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:41,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:41,054 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:37:41,097 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:37:41,105 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:41,111 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:41,197 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:37:42,301 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1392#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 3)) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:37:42,301 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:37:42,301 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:37:42,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2022-11-03 02:37:42,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326498843] [2022-11-03 02:37:42,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:37:42,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-03 02:37:42,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:42,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-03 02:37:42,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=763, Unknown=1, NotChecked=56, Total=930 [2022-11-03 02:37:42,307 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 20 states, 20 states have (on average 2.8) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:42,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:42,875 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2022-11-03 02:37:42,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:37:42,876 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.8) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-03 02:37:42,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:42,877 INFO L225 Difference]: With dead ends: 64 [2022-11-03 02:37:42,877 INFO L226 Difference]: Without dead ends: 54 [2022-11-03 02:37:42,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=194, Invalid=1215, Unknown=1, NotChecked=72, Total=1482 [2022-11-03 02:37:42,879 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 87 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:42,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 172 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 240 Invalid, 0 Unknown, 64 Unchecked, 0.3s Time] [2022-11-03 02:37:42,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-03 02:37:42,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 37. [2022-11-03 02:37:42,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 36 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:42,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2022-11-03 02:37:42,887 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 23 [2022-11-03 02:37:42,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:42,887 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2022-11-03 02:37:42,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.8) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:42,888 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2022-11-03 02:37:42,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 02:37:42,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:42,889 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:42,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:43,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:37:43,111 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:43,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:43,111 INFO L85 PathProgramCache]: Analyzing trace with hash 523836674, now seen corresponding path program 1 times [2022-11-03 02:37:43,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:43,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320590997] [2022-11-03 02:37:43,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:43,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:43,546 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:43,547 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:43,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320590997] [2022-11-03 02:37:43,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320590997] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:37:43,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413066622] [2022-11-03 02:37:43,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:43,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:37:43,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:37:43,549 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:37:43,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:37:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:43,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 02:37:43,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:43,671 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:43,726 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 02:37:43,726 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:43,763 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:43,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:43,824 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 02:37:43,824 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 61 [2022-11-03 02:37:43,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-03 02:37:43,834 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 32 treesize of output 34 [2022-11-03 02:37:43,867 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2022-11-03 02:37:43,871 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 11 [2022-11-03 02:37:43,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:43,880 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:43,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:37:43,936 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 52 treesize of output 30 [2022-11-03 02:37:43,945 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (and (forall ((v_ArrVal_293 (Array Int Int))) (= |c_ULTIMATE.start_main_~p~0#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_293) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))) (forall ((v_ArrVal_295 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_295) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) |c_ULTIMATE.start_main_~p~0#1.base|)))) is different from false [2022-11-03 02:37:43,967 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:37:43,968 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-03 02:37:43,976 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:37:43,977 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 31 [2022-11-03 02:37:43,981 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:37:43,998 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-03 02:37:43,999 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2022-11-03 02:37:44,160 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-03 02:37:44,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413066622] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:37:44,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1870434680] [2022-11-03 02:37:44,162 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-03 02:37:44,163 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:37:44,163 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:37:44,163 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:37:44,164 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:37:44,202 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-03 02:37:44,203 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 30 [2022-11-03 02:37:44,247 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:37:44,247 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 02:37:44,293 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:44,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:44,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:44,314 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:44,377 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-03 02:37:44,377 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-03 02:37:44,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-03 02:37:44,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:44,428 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-03 02:37:44,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2022-11-03 02:37:44,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 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 [2022-11-03 02:37:44,541 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:37:44,542 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 252 treesize of output 234 [2022-11-03 02:37:44,636 INFO L356 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2022-11-03 02:37:44,637 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 243 treesize of output 252 [2022-11-03 02:37:44,657 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:44,704 INFO L356 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-03 02:37:44,704 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 246 treesize of output 247 [2022-11-03 02:37:44,825 INFO L356 Elim1Store]: treesize reduction 128, result has 22.4 percent of original size [2022-11-03 02:37:44,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 242 treesize of output 262 [2022-11-03 02:37:44,871 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:37:44,872 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 244 treesize of output 226 [2022-11-03 02:37:45,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:45,238 INFO L356 Elim1Store]: treesize reduction 146, result has 13.1 percent of original size [2022-11-03 02:37:45,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 307 treesize of output 292 [2022-11-03 02:37:45,284 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:37:45,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 294 treesize of output 249 [2022-11-03 02:37:45,330 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:37:45,330 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 240 treesize of output 237 [2022-11-03 02:37:45,580 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:45,585 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:45,590 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:45,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:45,600 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:37:45,621 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:45,630 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:45,639 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:37:45,669 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:37:45,674 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:45,679 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:45,684 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:45,690 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:45,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:45,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:45,729 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:37:45,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:45,768 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:37:45,774 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:45,840 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:37:46,767 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1696#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 2)) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 3)) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:37:46,767 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:37:46,768 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:37:46,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-11-03 02:37:46,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469871927] [2022-11-03 02:37:46,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:37:46,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 02:37:46,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:46,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 02:37:46,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=564, Unknown=1, NotChecked=48, Total=702 [2022-11-03 02:37:46,769 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 16 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:46,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:46,996 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2022-11-03 02:37:46,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:37:46,997 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 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 [2022-11-03 02:37:46,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:46,997 INFO L225 Difference]: With dead ends: 49 [2022-11-03 02:37:46,998 INFO L226 Difference]: Without dead ends: 36 [2022-11-03 02:37:46,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=103, Invalid=712, Unknown=1, NotChecked=54, Total=870 [2022-11-03 02:37:46,999 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 18 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:47,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 129 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 142 Invalid, 0 Unknown, 48 Unchecked, 0.1s Time] [2022-11-03 02:37:47,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-03 02:37:47,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2022-11-03 02:37:47,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:47,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-11-03 02:37:47,006 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 23 [2022-11-03 02:37:47,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:47,007 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-11-03 02:37:47,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:47,007 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-11-03 02:37:47,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 02:37:47,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:47,008 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:47,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:47,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-03 02:37:47,209 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:47,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:47,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1100213005, now seen corresponding path program 2 times [2022-11-03 02:37:47,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:47,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572613101] [2022-11-03 02:37:47,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:47,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:47,943 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:47,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:47,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572613101] [2022-11-03 02:37:47,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572613101] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:37:47,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526038792] [2022-11-03 02:37:47,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:37:47,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:37:47,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:37:47,946 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:37:47,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:37:48,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 02:37:48,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:37:48,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-03 02:37:48,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:48,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:48,161 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 02:37:48,161 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:48,170 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:37:48,206 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-03 02:37:48,231 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:48,263 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:48,330 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 02:37:48,330 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2022-11-03 02:37:48,502 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:48,506 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:48,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:37:50,589 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~p~0#1.base| Int)) (let ((.cse0 (select (select (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 3)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 2 .cse0) (= 3 .cse0)))) is different from false [2022-11-03 02:37:50,622 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_376 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_91| Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_376))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_91| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_91|) |c_ULTIMATE.start_main_~t~0#1.offset| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 3) (= .cse0 2)))) is different from false [2022-11-03 02:37:50,654 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_376 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_91| Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_376))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_91| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_91|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 3 .cse0) (= 2 .cse0)))) is different from false [2022-11-03 02:37:50,681 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_373 Int) (v_ArrVal_376 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_91| Int)) (let ((.cse0 (select (select (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_ArrVal_373)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_376))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_91| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_91|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 3 .cse0) (= 2 .cse0)))) is different from false [2022-11-03 02:37:50,710 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:37:50,710 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 61 [2022-11-03 02:37:50,734 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:37:50,735 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 411 treesize of output 405 [2022-11-03 02:37:50,760 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 389 treesize of output 369 [2022-11-03 02:37:50,799 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 02:37:51,014 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 275 treesize of output 259 [2022-11-03 02:37:52,075 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:37:52,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 285 treesize of output 275 [2022-11-03 02:37:53,044 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:37:53,045 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 282 treesize of output 268 [2022-11-03 02:37:53,505 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2022-11-03 02:37:53,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526038792] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:37:53,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2078771817] [2022-11-03 02:37:53,511 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-03 02:37:53,511 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:37:53,511 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:37:53,511 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:37:53,512 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:37:53,556 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:37:53,556 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 02:37:53,567 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:53,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:53,605 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:53,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:53,658 INFO L356 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-11-03 02:37:53,658 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 22 treesize of output 38 [2022-11-03 02:37:53,719 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-03 02:37:53,720 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-03 02:37:53,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:53,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2022-11-03 02:37:53,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:53,770 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-03 02:37:53,783 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 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 [2022-11-03 02:37:53,869 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:37:53,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 252 treesize of output 234 [2022-11-03 02:37:53,961 INFO L356 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2022-11-03 02:37:53,961 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 243 treesize of output 252 [2022-11-03 02:37:54,119 INFO L356 Elim1Store]: treesize reduction 128, result has 22.4 percent of original size [2022-11-03 02:37:54,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 246 treesize of output 266 [2022-11-03 02:37:54,143 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:54,197 INFO L356 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-03 02:37:54,198 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 244 treesize of output 245 [2022-11-03 02:37:54,237 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:37:54,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 244 treesize of output 226 [2022-11-03 02:37:54,678 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:37:54,678 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 560 treesize of output 461 [2022-11-03 02:37:54,727 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:37:54,727 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 452 treesize of output 437 [2022-11-03 02:37:54,764 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:54,828 INFO L356 Elim1Store]: treesize reduction 146, result has 13.1 percent of original size [2022-11-03 02:37:54,828 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 441 treesize of output 410 [2022-11-03 02:37:55,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:55,221 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:55,226 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:37:55,232 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:55,241 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:55,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:55,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:55,272 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:37:55,295 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:55,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:55,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:55,311 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:37:55,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:37:55,334 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:55,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:37:55,351 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:37:55,378 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:37:55,385 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:55,391 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:37:55,465 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:37:56,937 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1971#(and (exists ((|v_ULTIMATE.start_main_~p~0#1.offset_93| Int) (|v_ULTIMATE.start_main_~p~0#1.base_98| Int)) (= 3 (select (select |#memory_int| |v_ULTIMATE.start_main_~p~0#1.base_98|) |v_ULTIMATE.start_main_~p~0#1.offset_93|))) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 2)) (= |ULTIMATE.start_main_~a~0#1.offset| |ULTIMATE.start_main_~p~0#1.offset|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 3)) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 1)) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~a~0#1.base| |ULTIMATE.start_main_~p~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:37:56,937 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:37:56,938 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:37:56,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-11-03 02:37:56,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998963110] [2022-11-03 02:37:56,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:37:56,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-03 02:37:56,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:56,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-03 02:37:56,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=980, Unknown=4, NotChecked=268, Total=1406 [2022-11-03 02:37:56,940 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:57,075 WARN L833 $PredicateComparison]: unable to prove that (and (= (select |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base|) 1) (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~p~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (forall ((v_ArrVal_376 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_91| Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_376))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_91| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_91|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 3 .cse0) (= 2 .cse0)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 2) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|)) is different from false [2022-11-03 02:37:57,086 WARN L833 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~p~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (forall ((v_ArrVal_376 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_91| Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_376))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_91| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_91|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 3 .cse0) (= 2 .cse0)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 2) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|)) is different from false [2022-11-03 02:37:57,091 WARN L833 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (forall ((v_ArrVal_376 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_91| Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_376))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_91| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_91|) |c_ULTIMATE.start_main_~t~0#1.offset| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 3) (= .cse0 2)))) (= |c_ULTIMATE.start_main_~t~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~p~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 2) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|)) is different from false [2022-11-03 02:37:59,008 WARN L833 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~p~0#1.offset| 0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 2) (forall ((|ULTIMATE.start_main_~p~0#1.base| Int)) (let ((.cse0 (select (select (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 3)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 2 .cse0) (= 3 .cse0)))) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|)) is different from false [2022-11-03 02:37:59,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:59,103 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2022-11-03 02:37:59,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 02:37:59,104 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-03 02:37:59,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:59,105 INFO L225 Difference]: With dead ends: 68 [2022-11-03 02:37:59,105 INFO L226 Difference]: Without dead ends: 64 [2022-11-03 02:37:59,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=189, Invalid=1167, Unknown=8, NotChecked=616, Total=1980 [2022-11-03 02:37:59,107 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 66 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 211 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:59,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 119 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 124 Invalid, 0 Unknown, 211 Unchecked, 0.1s Time] [2022-11-03 02:37:59,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-03 02:37:59,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 43. [2022-11-03 02:37:59,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 42 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:59,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2022-11-03 02:37:59,123 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 23 [2022-11-03 02:37:59,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:59,124 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2022-11-03 02:37:59,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:59,125 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2022-11-03 02:37:59,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 02:37:59,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:59,127 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] [2022-11-03 02:37:59,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:59,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 02:37:59,355 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:59,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:59,356 INFO L85 PathProgramCache]: Analyzing trace with hash -800511053, now seen corresponding path program 1 times [2022-11-03 02:37:59,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:59,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2844297] [2022-11-03 02:37:59,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:59,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:00,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:00,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:00,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2844297] [2022-11-03 02:38:00,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2844297] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:38:00,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110002477] [2022-11-03 02:38:00,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:00,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:00,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:38:00,015 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:38:00,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 02:38:00,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:00,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-03 02:38:00,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:00,150 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:00,207 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 02:38:00,207 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:00,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:38:00,257 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 02:38:00,316 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:00,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:00,412 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 02:38:00,413 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2022-11-03 02:38:00,555 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:00,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:00,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:38:02,635 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~p~0#1.base| Int)) (let ((.cse0 (select (select (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 3)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 1) (= 3 .cse0)))) is different from false [2022-11-03 02:38:02,660 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_463 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_103| Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_463))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_103| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_103|) |c_ULTIMATE.start_main_~t~0#1.offset| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 1) (= .cse0 3)))) is different from false [2022-11-03 02:38:02,690 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_463 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_103| Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_463))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_103| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_103|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 1) (= .cse0 3)))) is different from false [2022-11-03 02:38:02,733 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_463 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_103| Int) (v_ArrVal_457 Int)) (let ((.cse0 (select (select (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_ArrVal_457)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_463))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_103| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_103|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 3 .cse0) (= .cse0 1)))) is different from false [2022-11-03 02:38:02,762 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:02,764 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 61 [2022-11-03 02:38:02,787 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:02,787 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 411 treesize of output 405 [2022-11-03 02:38:02,801 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 389 treesize of output 369 [2022-11-03 02:38:02,839 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 02:38:03,019 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 275 treesize of output 259 [2022-11-03 02:38:03,435 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:03,435 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 281 treesize of output 271 [2022-11-03 02:38:03,840 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:03,841 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 247 treesize of output 237 [2022-11-03 02:38:04,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-11-03 02:38:04,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110002477] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:38:04,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1992109604] [2022-11-03 02:38:04,514 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-11-03 02:38:04,514 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:38:04,514 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:38:04,515 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:38:04,515 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:38:04,561 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-03 02:38:04,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 30 [2022-11-03 02:38:04,608 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:38:04,608 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 02:38:04,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:04,638 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:04,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:04,696 INFO L356 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-11-03 02:38:04,696 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 22 treesize of output 38 [2022-11-03 02:38:04,709 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:04,766 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-03 02:38:04,766 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-03 02:38:04,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 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 [2022-11-03 02:38:04,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:04,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-03 02:38:04,825 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2022-11-03 02:38:04,905 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:38:04,906 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 252 treesize of output 234 [2022-11-03 02:38:04,952 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:38:04,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 252 treesize of output 234 [2022-11-03 02:38:05,064 INFO L356 Elim1Store]: treesize reduction 120, result has 27.3 percent of original size [2022-11-03 02:38:05,066 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 248 treesize of output 276 [2022-11-03 02:38:05,081 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:38:05,125 INFO L356 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-03 02:38:05,125 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 246 treesize of output 247 [2022-11-03 02:38:05,177 INFO L356 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2022-11-03 02:38:05,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 237 treesize of output 246 [2022-11-03 02:38:05,441 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:38:05,441 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 294 treesize of output 249 [2022-11-03 02:38:05,487 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:38:05,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 240 treesize of output 237 [2022-11-03 02:38:05,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:38:05,568 INFO L356 Elim1Store]: treesize reduction 146, result has 13.1 percent of original size [2022-11-03 02:38:05,569 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 241 treesize of output 226 [2022-11-03 02:38:05,730 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:05,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:05,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:38:05,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:05,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:05,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:38:05,801 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:38:05,808 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:38:05,838 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:05,842 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:38:05,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:05,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:05,860 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:05,875 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:38:05,883 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:38:05,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:38:05,922 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:05,928 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:38:05,938 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:05,947 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:05,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:05,970 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:38:05,980 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:38:05,987 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:38:06,014 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:06,023 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:38:06,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:06,143 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:06,149 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:06,154 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:06,159 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:38:06,166 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:06,184 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:38:06,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:38:06,203 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:38:06,214 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:38:07,777 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2295#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 2)) (= |ULTIMATE.start_main_~a~0#1.offset| |ULTIMATE.start_main_~p~0#1.offset|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 3)) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 1)) (= |#NULL.offset| 0) (exists ((|v_ULTIMATE.start_main_~p~0#1.offset_105| Int) (|v_ULTIMATE.start_main_~p~0#1.base_111| Int)) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~p~0#1.base_111|) |v_ULTIMATE.start_main_~p~0#1.offset_105|) 3)) (= |ULTIMATE.start_main_~a~0#1.base| |ULTIMATE.start_main_~p~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:38:07,777 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:38:07,777 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:38:07,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-11-03 02:38:07,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209938135] [2022-11-03 02:38:07,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:38:07,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-03 02:38:07,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:07,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-03 02:38:07,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=995, Unknown=4, NotChecked=268, Total=1406 [2022-11-03 02:38:07,780 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:07,853 WARN L833 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 1) (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (forall ((v_ArrVal_463 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_103| Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_463))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_103| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_103|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 1) (= .cse0 3)))) (not (= |c_ULTIMATE.start_main_~p~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|)) is different from false [2022-11-03 02:38:07,874 WARN L833 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 1) (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~t~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~p~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (forall ((v_ArrVal_463 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_103| Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_463))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_103| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_103|) |c_ULTIMATE.start_main_~t~0#1.offset| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 1) (= .cse0 3)))) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|)) is different from false [2022-11-03 02:38:09,884 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~p~0#1.base| Int)) (let ((.cse0 (select (select (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 3)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 1) (= 3 .cse0)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 1) (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~p~0#1.offset| 0) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|)) is different from false [2022-11-03 02:38:09,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:09,992 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2022-11-03 02:38:09,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 02:38:09,993 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 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 [2022-11-03 02:38:09,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:09,995 INFO L225 Difference]: With dead ends: 58 [2022-11-03 02:38:09,995 INFO L226 Difference]: Without dead ends: 54 [2022-11-03 02:38:09,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=155, Invalid=1056, Unknown=7, NotChecked=504, Total=1722 [2022-11-03 02:38:09,997 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 25 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 275 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:09,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 157 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 163 Invalid, 0 Unknown, 275 Unchecked, 0.2s Time] [2022-11-03 02:38:09,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-03 02:38:10,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 41. [2022-11-03 02:38:10,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:10,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2022-11-03 02:38:10,015 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 23 [2022-11-03 02:38:10,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:10,015 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2022-11-03 02:38:10,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:10,016 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2022-11-03 02:38:10,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 02:38:10,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:10,019 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:10,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:10,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:10,243 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:10,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:10,244 INFO L85 PathProgramCache]: Analyzing trace with hash 62890611, now seen corresponding path program 2 times [2022-11-03 02:38:10,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:10,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395059072] [2022-11-03 02:38:10,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:10,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:10,898 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:10,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:10,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395059072] [2022-11-03 02:38:10,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395059072] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:38:10,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067956856] [2022-11-03 02:38:10,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:38:10,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:10,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:38:10,907 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:38:10,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 02:38:11,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 02:38:11,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:38:11,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-03 02:38:11,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:11,061 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:11,139 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:38:11,155 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 02:38:11,155 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:11,208 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 02:38:11,250 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:11,288 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:11,381 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 02:38:11,381 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2022-11-03 02:38:11,543 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:11,546 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:11,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:38:13,536 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~p~0#1.base| Int)) (let ((.cse0 (select (select (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 3)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 1) (= 3 .cse0)))) is different from false [2022-11-03 02:38:13,571 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_117| Int) (v_ArrVal_547 (Array Int Int))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_547))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_117| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_117|) |c_ULTIMATE.start_main_~t~0#1.offset| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 3 .cse0) (= .cse0 1)))) is different from false [2022-11-03 02:38:13,589 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_117| Int) (v_ArrVal_547 (Array Int Int))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_547))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_117| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_117|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 1) (= 3 .cse0)))) is different from false [2022-11-03 02:38:13,615 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_544 Int) (|v_ULTIMATE.start_main_~p~0#1.base_117| Int) (v_ArrVal_547 (Array Int Int))) (let ((.cse0 (select (select (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_ArrVal_544)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_547))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_117| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_117|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 1) (= 3 .cse0)))) is different from false [2022-11-03 02:38:13,641 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:13,642 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 61 [2022-11-03 02:38:13,664 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:13,664 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 267 treesize of output 273 [2022-11-03 02:38:13,676 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 257 treesize of output 241 [2022-11-03 02:38:13,705 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 02:38:13,834 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 125 [2022-11-03 02:38:14,161 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:14,162 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 143 treesize of output 141 [2022-11-03 02:38:15,016 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:15,017 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 388 treesize of output 364 [2022-11-03 02:38:15,577 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2022-11-03 02:38:15,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067956856] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:38:15,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [798582775] [2022-11-03 02:38:15,580 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-03 02:38:15,580 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:38:15,581 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:38:15,581 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:38:15,581 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:38:15,617 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-03 02:38:15,617 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 30 [2022-11-03 02:38:15,654 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:38:15,654 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 02:38:15,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:15,680 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:15,687 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:15,741 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-03 02:38:15,741 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-03 02:38:15,752 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:15,760 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-03 02:38:15,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:15,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-03 02:38:15,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2022-11-03 02:38:15,818 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 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 [2022-11-03 02:38:15,904 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:38:15,905 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 252 treesize of output 234 [2022-11-03 02:38:15,996 INFO L356 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2022-11-03 02:38:15,997 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 243 treesize of output 252 [2022-11-03 02:38:16,122 INFO L356 Elim1Store]: treesize reduction 128, result has 22.4 percent of original size [2022-11-03 02:38:16,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 246 treesize of output 266 [2022-11-03 02:38:16,146 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:38:16,208 INFO L356 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-03 02:38:16,208 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 244 treesize of output 245 [2022-11-03 02:38:16,247 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:38:16,247 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 244 treesize of output 226 [2022-11-03 02:38:16,852 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:38:16,853 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 648 treesize of output 633 [2022-11-03 02:38:16,902 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:38:16,902 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 624 treesize of output 525 [2022-11-03 02:38:16,924 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:38:16,969 INFO L356 Elim1Store]: treesize reduction 146, result has 13.1 percent of original size [2022-11-03 02:38:16,969 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 529 treesize of output 490 [2022-11-03 02:38:17,520 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:17,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:17,534 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:38:17,539 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:17,544 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:17,559 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:38:17,567 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:38:17,574 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:38:17,609 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:38:17,616 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:17,621 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:17,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:17,703 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:17,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:17,713 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:17,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:38:17,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:38:17,740 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:38:17,747 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:38:17,757 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:38:19,112 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2602#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 2)) (= |ULTIMATE.start_main_~a~0#1.offset| |ULTIMATE.start_main_~p~0#1.offset|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 3)) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 1)) (exists ((|v_ULTIMATE.start_main_~p~0#1.base_123| Int) (|v_ULTIMATE.start_main_~p~0#1.offset_116| Int)) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~p~0#1.base_123|) |v_ULTIMATE.start_main_~p~0#1.offset_116|) 3)) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~a~0#1.base| |ULTIMATE.start_main_~p~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:38:19,112 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:38:19,112 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:38:19,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-11-03 02:38:19,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172063544] [2022-11-03 02:38:19,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:38:19,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-03 02:38:19,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:19,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-03 02:38:19,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1053, Unknown=4, NotChecked=276, Total=1482 [2022-11-03 02:38:19,114 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 25 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:19,288 WARN L833 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 1) (= (select |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base|) 1) (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~p~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (forall ((|v_ULTIMATE.start_main_~p~0#1.base_117| Int) (v_ArrVal_547 (Array Int Int))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_547))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_117| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_117|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 1) (= 3 .cse0)))) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|)) is different from false [2022-11-03 02:38:19,292 WARN L833 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 1) (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~p~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (forall ((|v_ULTIMATE.start_main_~p~0#1.base_117| Int) (v_ArrVal_547 (Array Int Int))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_547))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_117| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_117|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 1) (= 3 .cse0)))) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|)) is different from false [2022-11-03 02:38:19,305 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~p~0#1.base_117| Int) (v_ArrVal_547 (Array Int Int))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_547))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_117| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_117|) |c_ULTIMATE.start_main_~t~0#1.offset| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 3 .cse0) (= .cse0 1)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 1) (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~t~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~p~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|)) is different from false [2022-11-03 02:38:21,249 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~p~0#1.base| Int)) (let ((.cse0 (select (select (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 3)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 1) (= 3 .cse0)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 1) (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~p~0#1.offset| 0) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|)) is different from false [2022-11-03 02:38:21,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:21,385 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2022-11-03 02:38:21,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 02:38:21,386 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 25 states have internal predecessors, (57), 0 states have call successors, (0), 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 [2022-11-03 02:38:21,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:21,387 INFO L225 Difference]: With dead ends: 90 [2022-11-03 02:38:21,387 INFO L226 Difference]: Without dead ends: 86 [2022-11-03 02:38:21,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=188, Invalid=1242, Unknown=8, NotChecked=632, Total=2070 [2022-11-03 02:38:21,388 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 78 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 195 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:21,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 138 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 159 Invalid, 0 Unknown, 195 Unchecked, 0.2s Time] [2022-11-03 02:38:21,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-03 02:38:21,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 45. [2022-11-03 02:38:21,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 44 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:21,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2022-11-03 02:38:21,399 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 23 [2022-11-03 02:38:21,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:21,399 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2022-11-03 02:38:21,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 25 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:21,400 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2022-11-03 02:38:21,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-03 02:38:21,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:21,401 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:21,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:21,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:21,624 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:21,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:21,624 INFO L85 PathProgramCache]: Analyzing trace with hash -694066546, now seen corresponding path program 3 times [2022-11-03 02:38:21,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:21,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76267463] [2022-11-03 02:38:21,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:21,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:22,401 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:22,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:22,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76267463] [2022-11-03 02:38:22,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76267463] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:38:22,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853121641] [2022-11-03 02:38:22,402 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:38:22,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:22,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:38:22,403 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:38:22,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 02:38:22,650 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:38:22,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:38:22,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-03 02:38:22,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:22,661 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:22,753 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 02:38:22,753 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:22,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:38:22,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:38:22,956 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 02:38:22,956 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2022-11-03 02:38:22,977 INFO L356 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-11-03 02:38:22,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:22,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:22,992 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-03 02:38:23,003 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:38:23,100 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:38:23,113 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 02:38:23,113 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 79 [2022-11-03 02:38:23,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:23,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 36 [2022-11-03 02:38:23,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 90 treesize of output 84 [2022-11-03 02:38:23,270 INFO L356 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-03 02:38:23,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:23,286 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 02:38:23,287 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 98 [2022-11-03 02:38:23,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:23,419 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:38:23,420 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:38:23,429 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 02:38:23,429 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 30 [2022-11-03 02:38:23,461 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:38:23,462 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 14 [2022-11-03 02:38:23,499 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:23,502 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:23,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:38:23,553 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_638 (Array Int Int)) (v_ArrVal_639 (Array Int Int)) (v_ArrVal_640 (Array Int Int))) (= 2 (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_639) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_638) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_640) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))))) is different from false [2022-11-03 02:38:23,575 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_633 (Array Int Int)) (v_ArrVal_638 (Array Int Int)) (v_ArrVal_639 (Array Int Int)) (v_ArrVal_637 Int) (v_ArrVal_640 (Array Int Int))) (= (let ((.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (select (let ((.cse0 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) .cse0 v_ArrVal_637)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_639) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) .cse0 |c_ULTIMATE.start_main_~t~0#1.base|)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_638) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_633) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_640) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) 2)) is different from false [2022-11-03 02:38:23,595 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:23,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 52 treesize of output 56 [2022-11-03 02:38:23,608 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:23,608 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 65 [2022-11-03 02:38:23,623 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:23,623 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 121 [2022-11-03 02:38:23,632 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 27 [2022-11-03 02:38:23,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-03 02:38:23,799 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:23,799 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-03 02:38:23,809 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:23,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 85 [2022-11-03 02:38:23,819 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:23,819 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 80 treesize of output 64 [2022-11-03 02:38:23,824 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 42 [2022-11-03 02:38:23,956 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:23,956 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2022-11-03 02:38:23,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:38:23,967 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:23,968 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 46 [2022-11-03 02:38:23,978 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:23,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2022-11-03 02:38:24,071 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:24,072 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2022-11-03 02:38:24,076 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:38:24,085 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:24,086 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2022-11-03 02:38:24,106 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 02:38:24,544 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-11-03 02:38:24,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853121641] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:38:24,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1177924301] [2022-11-03 02:38:24,548 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-03 02:38:24,548 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:38:24,549 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:38:24,549 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:38:24,549 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:38:24,595 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:38:24,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 02:38:24,603 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:24,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:24,641 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:24,651 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:24,698 INFO L356 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-11-03 02:38:24,698 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 22 treesize of output 38 [2022-11-03 02:38:24,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:24,769 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-03 02:38:24,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-03 02:38:24,794 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 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 [2022-11-03 02:38:24,803 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2022-11-03 02:38:24,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:24,816 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-03 02:38:24,912 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:38:24,913 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 252 treesize of output 234 [2022-11-03 02:38:24,995 INFO L356 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2022-11-03 02:38:24,995 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 243 treesize of output 252 [2022-11-03 02:38:25,113 INFO L356 Elim1Store]: treesize reduction 128, result has 22.4 percent of original size [2022-11-03 02:38:25,113 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 246 treesize of output 266 [2022-11-03 02:38:25,150 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:38:25,151 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 248 treesize of output 230 [2022-11-03 02:38:25,167 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:38:25,213 INFO L356 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-03 02:38:25,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 244 treesize of output 245 [2022-11-03 02:38:25,446 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:38:25,447 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 294 treesize of output 249 [2022-11-03 02:38:25,488 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:38:25,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 240 treesize of output 237 [2022-11-03 02:38:25,507 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:38:25,557 INFO L356 Elim1Store]: treesize reduction 146, result has 13.1 percent of original size [2022-11-03 02:38:25,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 241 treesize of output 226 [2022-11-03 02:38:25,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:25,737 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:25,741 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:38:25,747 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:25,751 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:25,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:38:25,773 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:38:25,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:38:25,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:25,814 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:25,820 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:25,825 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:25,831 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:38:25,849 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:38:25,859 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:38:25,871 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:38:25,897 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:38:25,903 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:25,909 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:26,001 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:38:27,297 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2970#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 3)) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:38:27,297 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:38:27,297 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:38:27,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2022-11-03 02:38:27,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146926923] [2022-11-03 02:38:27,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:38:27,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 02:38:27,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:27,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 02:38:27,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=998, Unknown=3, NotChecked=130, Total=1260 [2022-11-03 02:38:27,300 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 25 states, 25 states have (on average 2.4) internal successors, (60), 24 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:28,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:28,102 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2022-11-03 02:38:28,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 02:38:28,102 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 24 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-03 02:38:28,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:28,103 INFO L225 Difference]: With dead ends: 70 [2022-11-03 02:38:28,103 INFO L226 Difference]: Without dead ends: 66 [2022-11-03 02:38:28,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=203, Invalid=1524, Unknown=3, NotChecked=162, Total=1892 [2022-11-03 02:38:28,105 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 86 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 198 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:28,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 213 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 266 Invalid, 0 Unknown, 198 Unchecked, 0.3s Time] [2022-11-03 02:38:28,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-03 02:38:28,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2022-11-03 02:38:28,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 51 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:28,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2022-11-03 02:38:28,117 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 25 [2022-11-03 02:38:28,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:28,117 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2022-11-03 02:38:28,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 24 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:28,117 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2022-11-03 02:38:28,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-03 02:38:28,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:28,118 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:28,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:28,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-03 02:38:28,319 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:28,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:28,319 INFO L85 PathProgramCache]: Analyzing trace with hash 357011470, now seen corresponding path program 1 times [2022-11-03 02:38:28,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:28,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22972298] [2022-11-03 02:38:28,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:28,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:28,922 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:28,922 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:28,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22972298] [2022-11-03 02:38:28,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22972298] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:38:28,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584007436] [2022-11-03 02:38:28,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:28,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:28,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:38:28,924 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:38:28,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 02:38:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:29,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-03 02:38:29,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:29,083 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:29,131 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:38:29,148 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 02:38:29,148 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:29,186 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 02:38:29,226 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:29,259 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:29,334 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 02:38:29,334 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2022-11-03 02:38:29,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:38:29,416 INFO L356 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2022-11-03 02:38:29,417 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 26 [2022-11-03 02:38:29,438 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:29,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:38:30,866 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~p~0#1.base| Int)) (not (= 2 (select (select (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 3)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))) is different from false [2022-11-03 02:38:30,885 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_722 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_147| Int)) (not (= 2 (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_722))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_147| (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_147|) |c_ULTIMATE.start_main_~t~0#1.offset| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))) is different from false [2022-11-03 02:38:30,897 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_722 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_147| Int)) (not (= 2 (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_722))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_147| (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_147|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))) is different from false [2022-11-03 02:38:30,914 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_722 (Array Int Int)) (v_ArrVal_719 Int) (|v_ULTIMATE.start_main_~p~0#1.base_147| Int)) (not (= (select (select (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_ArrVal_719)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_722))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_147| (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_147|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 2))) is different from false [2022-11-03 02:38:30,942 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:30,942 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 41 [2022-11-03 02:38:30,965 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:30,965 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 295 treesize of output 301 [2022-11-03 02:38:30,976 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 254 [2022-11-03 02:38:31,073 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 02:38:31,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 02:38:31,100 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 02:38:31,126 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:31,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 25 [2022-11-03 02:38:31,143 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 64 [2022-11-03 02:38:31,149 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2022-11-03 02:38:31,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 71 [2022-11-03 02:38:31,278 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2022-11-03 02:38:31,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584007436] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:38:31,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1897693802] [2022-11-03 02:38:31,281 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-03 02:38:31,281 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:38:31,281 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:38:31,282 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:38:31,282 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:38:31,327 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-03 02:38:31,328 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 30 [2022-11-03 02:38:31,370 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:38:31,371 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 02:38:31,459 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-03 02:38:31,459 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-03 02:38:31,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:31,473 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:31,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:31,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-03 02:38:31,503 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:31,533 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 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 [2022-11-03 02:38:31,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:31,544 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-03 02:38:31,555 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2022-11-03 02:38:31,643 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:38:31,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 252 treesize of output 234 [2022-11-03 02:38:31,782 INFO L356 Elim1Store]: treesize reduction 120, result has 27.3 percent of original size [2022-11-03 02:38:31,782 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 248 treesize of output 276 [2022-11-03 02:38:31,852 INFO L356 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2022-11-03 02:38:31,853 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 241 treesize of output 250 [2022-11-03 02:38:31,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:38:31,922 INFO L356 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-03 02:38:31,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 244 treesize of output 245 [2022-11-03 02:38:31,957 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:38:31,957 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 244 treesize of output 226 [2022-11-03 02:38:32,374 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:38:32,375 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 560 treesize of output 545 [2022-11-03 02:38:32,423 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:38:32,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 536 treesize of output 437 [2022-11-03 02:38:32,448 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:38:32,505 INFO L356 Elim1Store]: treesize reduction 146, result has 13.1 percent of original size [2022-11-03 02:38:32,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 441 treesize of output 410 [2022-11-03 02:38:32,743 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:32,747 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:38:32,752 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:32,756 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:32,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:32,776 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:38:32,785 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:38:32,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:38:32,824 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:38:32,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:32,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:32,917 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:32,921 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:38:32,926 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:38:32,930 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:32,936 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:32,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:38:32,960 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:38:32,967 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:38:32,977 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:38:33,929 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3320#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 3)) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:38:33,930 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:38:33,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:38:33,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 22 [2022-11-03 02:38:33,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698668022] [2022-11-03 02:38:33,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:38:33,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-03 02:38:33,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:33,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-03 02:38:33,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=721, Unknown=4, NotChecked=228, Total=1056 [2022-11-03 02:38:33,932 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 22 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:34,007 WARN L833 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 1) (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~p~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (forall ((v_ArrVal_722 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_147| Int)) (not (= 2 (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_722))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_147| (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_147|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|)) is different from false [2022-11-03 02:38:34,025 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_722 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_147| Int)) (not (= 2 (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_722))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_147| (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_147|) |c_ULTIMATE.start_main_~t~0#1.offset| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 1) (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~t~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~p~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|)) is different from false [2022-11-03 02:38:35,980 WARN L833 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 1) (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (forall ((|ULTIMATE.start_main_~p~0#1.base| Int)) (not (= 2 (select (select (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 3)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))) (= |c_ULTIMATE.start_main_~p~0#1.offset| 0) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|)) is different from false [2022-11-03 02:38:36,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:36,101 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2022-11-03 02:38:36,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:38:36,102 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 22 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-03 02:38:36,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:36,102 INFO L225 Difference]: With dead ends: 62 [2022-11-03 02:38:36,103 INFO L226 Difference]: Without dead ends: 54 [2022-11-03 02:38:36,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=127, Invalid=824, Unknown=7, NotChecked=448, Total=1406 [2022-11-03 02:38:36,104 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:36,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 146 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 126 Invalid, 0 Unknown, 102 Unchecked, 0.1s Time] [2022-11-03 02:38:36,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-03 02:38:36,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-11-03 02:38:36,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 53 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:36,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2022-11-03 02:38:36,117 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 25 [2022-11-03 02:38:36,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:36,118 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2022-11-03 02:38:36,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 22 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:36,118 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2022-11-03 02:38:36,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-03 02:38:36,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:36,120 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:36,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:36,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-03 02:38:36,331 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:36,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:36,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1381714446, now seen corresponding path program 1 times [2022-11-03 02:38:36,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:36,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49999205] [2022-11-03 02:38:36,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:36,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:37,197 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:37,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:37,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49999205] [2022-11-03 02:38:37,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49999205] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:38:37,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012756786] [2022-11-03 02:38:37,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:37,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:37,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:38:37,200 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:38:37,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-03 02:38:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:37,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-03 02:38:37,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:37,362 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:37,455 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 02:38:37,456 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:38:37,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:38:37,531 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:38:37,596 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:38:37,611 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 02:38:37,612 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-11-03 02:38:37,629 INFO L356 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2022-11-03 02:38:37,629 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 24 [2022-11-03 02:38:37,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:38:37,647 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 18 [2022-11-03 02:38:37,749 INFO L356 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2022-11-03 02:38:37,749 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 175 treesize of output 117 [2022-11-03 02:38:37,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 51 treesize of output 44 [2022-11-03 02:38:37,763 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 109 [2022-11-03 02:38:37,977 INFO L356 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-03 02:38:37,977 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 174 treesize of output 145 [2022-11-03 02:38:38,001 INFO L356 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-03 02:38:38,002 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 146 treesize of output 134 [2022-11-03 02:38:38,019 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 54 [2022-11-03 02:38:38,174 INFO L356 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-03 02:38:38,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 60 [2022-11-03 02:38:38,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 26 [2022-11-03 02:38:38,262 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 02:38:38,262 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 17 [2022-11-03 02:38:38,266 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:38,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:38:38,549 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:38,550 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 75 treesize of output 79 [2022-11-03 02:38:38,587 INFO L356 Elim1Store]: treesize reduction 4, result has 91.7 percent of original size [2022-11-03 02:38:38,587 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1670 treesize of output 1616 [2022-11-03 02:38:38,626 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:38,627 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1118 treesize of output 1011 [2022-11-03 02:38:39,280 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-03 02:38:39,433 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-03 02:38:39,831 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2022-11-03 02:38:39,886 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2022-11-03 02:38:39,993 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 40 [2022-11-03 02:38:40,023 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 40 [2022-11-03 02:38:54,428 WARN L234 SmtUtils]: Spent 13.72s on a formula simplification. DAG size of input: 165 DAG size of output: 138 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:38:54,950 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:54,950 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2022-11-03 02:38:54,963 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:54,964 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 341 treesize of output 232 [2022-11-03 02:38:54,975 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:54,976 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-03 02:38:54,990 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:54,990 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 175 treesize of output 171 [2022-11-03 02:38:55,001 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 142 [2022-11-03 02:38:55,007 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:38:55,019 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,019 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 36 treesize of output 35 [2022-11-03 02:38:55,033 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,033 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 171 treesize of output 143 [2022-11-03 02:38:55,136 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,137 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 49 [2022-11-03 02:38:55,141 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:38:55,150 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,150 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 61 treesize of output 54 [2022-11-03 02:38:55,173 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 40 treesize of output 32 [2022-11-03 02:38:55,199 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,199 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 51 [2022-11-03 02:38:55,210 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2022-11-03 02:38:55,225 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,225 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 323 treesize of output 202 [2022-11-03 02:38:55,233 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:38:55,247 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,248 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 36 treesize of output 35 [2022-11-03 02:38:55,274 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,274 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 175 treesize of output 139 [2022-11-03 02:38:55,282 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 99 [2022-11-03 02:38:55,299 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 61 treesize of output 57 [2022-11-03 02:38:55,419 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,420 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-03 02:38:55,433 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,433 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2022-11-03 02:38:55,449 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,450 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 258 treesize of output 197 [2022-11-03 02:38:55,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:38:55,474 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 36 treesize of output 35 [2022-11-03 02:38:55,500 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2022-11-03 02:38:55,513 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,513 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 25 [2022-11-03 02:38:55,569 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,570 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 41 [2022-11-03 02:38:55,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:38:55,582 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,582 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 77 treesize of output 58 [2022-11-03 02:38:55,599 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,600 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 31 treesize of output 27 [2022-11-03 02:38:55,647 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,647 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2022-11-03 02:38:55,660 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,661 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 288 treesize of output 221 [2022-11-03 02:38:55,674 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,674 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2022-11-03 02:38:55,683 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 134 [2022-11-03 02:38:55,700 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 143 treesize of output 139 [2022-11-03 02:38:55,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:38:55,725 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,725 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 47 treesize of output 46 [2022-11-03 02:38:55,743 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,743 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 174 treesize of output 138 [2022-11-03 02:38:55,898 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,898 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 41 [2022-11-03 02:38:55,915 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,915 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 126 [2022-11-03 02:38:55,924 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 91 [2022-11-03 02:38:55,939 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:55,940 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 57 treesize of output 53 [2022-11-03 02:38:56,215 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:56,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 338 treesize of output 299 [2022-11-03 02:38:56,254 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:56,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 902 treesize of output 667 [2022-11-03 02:38:56,297 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:56,297 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 650 treesize of output 621 [2022-11-03 02:38:56,312 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 610 treesize of output 602 [2022-11-03 02:38:56,341 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:56,342 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 602 treesize of output 603 [2022-11-03 02:38:56,380 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:56,381 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1115 treesize of output 1078 [2022-11-03 02:38:56,430 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:56,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1062 treesize of output 1015 [2022-11-03 02:38:56,455 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1006 treesize of output 998 [2022-11-03 02:38:56,492 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:56,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 998 treesize of output 955 [2022-11-03 02:38:56,518 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 946 treesize of output 930 [2022-11-03 02:38:56,542 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 930 treesize of output 922 [2022-11-03 02:38:56,580 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:56,581 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 922 treesize of output 923 [2022-11-03 02:38:56,621 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:56,622 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 914 treesize of output 903 [2022-11-03 02:38:56,649 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 894 treesize of output 862 [2022-11-03 02:38:56,689 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:56,690 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 862 treesize of output 755 [2022-11-03 02:38:56,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 746 treesize of output 714 [2022-11-03 02:38:56,759 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:38:56,760 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 714 treesize of output 715 [2022-11-03 02:38:56,786 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 706 treesize of output 698 [2022-11-03 02:39:01,570 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:01,571 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-03 02:39:01,588 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:01,589 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 255 treesize of output 200 [2022-11-03 02:39:01,603 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:01,604 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-03 02:39:01,622 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:01,623 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 150 treesize of output 146 [2022-11-03 02:39:01,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 118 [2022-11-03 02:39:01,645 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:39:01,660 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:01,660 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2022-11-03 02:39:01,691 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:01,691 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 139 treesize of output 115 [2022-11-03 02:39:01,900 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:01,901 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2022-11-03 02:39:01,913 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:01,913 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 47 [2022-11-03 02:39:01,932 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:01,933 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 265 treesize of output 204 [2022-11-03 02:39:01,943 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 134 [2022-11-03 02:39:01,973 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:01,974 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 143 treesize of output 139 [2022-11-03 02:39:01,986 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:39:02,003 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:02,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 46 [2022-11-03 02:39:02,024 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:02,025 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 167 treesize of output 135 [2022-11-03 02:39:02,182 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:02,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 49 [2022-11-03 02:39:02,187 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:39:02,198 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:02,199 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 54 [2022-11-03 02:39:02,227 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:02,227 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 33 treesize of output 29 [2022-11-03 02:39:02,252 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:02,252 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2022-11-03 02:39:02,271 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:02,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 202 treesize of output 141 [2022-11-03 02:39:02,305 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:02,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-03 02:39:02,322 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:02,322 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 91 treesize of output 91 [2022-11-03 02:39:02,332 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 70 [2022-11-03 02:39:02,338 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:39:02,356 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:02,356 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2022-11-03 02:39:02,370 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:02,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 92 treesize of output 76 [2022-11-03 02:39:02,471 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:02,472 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 51 [2022-11-03 02:39:02,483 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:02,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2022-11-03 02:39:02,501 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:02,501 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 310 treesize of output 195 [2022-11-03 02:39:02,515 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 131 [2022-11-03 02:39:02,535 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:02,536 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 77 treesize of output 73 [2022-11-03 02:39:02,547 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:39:02,562 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:02,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2022-11-03 02:39:02,589 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:02,589 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 144 treesize of output 112 [2022-11-03 02:39:02,733 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:02,734 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2022-11-03 02:39:02,749 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:02,750 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 181 treesize of output 138 [2022-11-03 02:39:02,761 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:02,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2022-11-03 02:39:02,770 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 66 [2022-11-03 02:39:02,794 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:02,795 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 75 treesize of output 75 [2022-11-03 02:39:02,805 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:39:02,819 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:02,819 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 46 [2022-11-03 02:39:02,834 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:02,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 103 treesize of output 79 [2022-11-03 02:39:02,950 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:02,951 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 41 [2022-11-03 02:39:02,955 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:39:02,965 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:02,966 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 88 treesize of output 63 [2022-11-03 02:39:02,980 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:02,980 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 31 treesize of output 27 [2022-11-03 02:39:09,674 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:39:09,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012756786] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:39:09,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1853192005] [2022-11-03 02:39:09,676 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-03 02:39:09,676 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:39:09,677 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:39:09,677 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:39:09,677 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:39:09,719 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:39:09,719 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 02:39:09,726 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:39:09,790 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-03 02:39:09,791 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-03 02:39:09,802 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:39:09,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:09,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:39:09,820 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-03 02:39:09,831 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:39:09,853 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 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 [2022-11-03 02:39:09,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:09,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-03 02:39:09,879 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2022-11-03 02:39:09,956 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:39:09,957 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 252 treesize of output 234 [2022-11-03 02:39:09,991 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:39:09,992 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 252 treesize of output 234 [2022-11-03 02:39:10,130 INFO L356 Elim1Store]: treesize reduction 120, result has 27.3 percent of original size [2022-11-03 02:39:10,130 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 248 treesize of output 276 [2022-11-03 02:39:10,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:39:10,199 INFO L356 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-03 02:39:10,199 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 246 treesize of output 247 [2022-11-03 02:39:10,261 INFO L356 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2022-11-03 02:39:10,261 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 237 treesize of output 246 [2022-11-03 02:39:10,632 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:39:10,633 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 560 treesize of output 545 [2022-11-03 02:39:10,688 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:39:10,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 536 treesize of output 437 [2022-11-03 02:39:10,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:39:10,782 INFO L356 Elim1Store]: treesize reduction 146, result has 13.1 percent of original size [2022-11-03 02:39:10,782 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 441 treesize of output 410 [2022-11-03 02:39:11,025 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:39:11,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:39:11,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:39:11,040 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:39:11,046 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:39:11,062 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:39:11,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:39:11,079 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:39:11,114 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:39:11,120 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:39:11,126 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:39:11,225 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:39:11,229 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:39:11,235 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:39:11,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:39:11,245 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:39:11,262 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:39:11,272 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:39:11,279 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:39:11,289 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:39:12,426 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3664#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 2)) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 3)) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:39:12,426 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:39:12,427 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:39:12,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-11-03 02:39:12,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231485870] [2022-11-03 02:39:12,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:39:12,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-03 02:39:12,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:39:12,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-03 02:39:12,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1332, Unknown=3, NotChecked=0, Total=1482 [2022-11-03 02:39:12,429 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 28 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:39:13,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:39:13,326 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2022-11-03 02:39:13,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 02:39:13,327 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 28 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-03 02:39:13,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:39:13,328 INFO L225 Difference]: With dead ends: 70 [2022-11-03 02:39:13,328 INFO L226 Difference]: Without dead ends: 64 [2022-11-03 02:39:13,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=222, Invalid=2031, Unknown=3, NotChecked=0, Total=2256 [2022-11-03 02:39:13,330 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 58 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:39:13,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 249 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 172 Invalid, 0 Unknown, 89 Unchecked, 0.3s Time] [2022-11-03 02:39:13,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-03 02:39:13,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2022-11-03 02:39:13,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2) internal successors, (66), 55 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:39:13,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2022-11-03 02:39:13,352 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 25 [2022-11-03 02:39:13,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:39:13,352 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2022-11-03 02:39:13,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 28 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:39:13,354 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2022-11-03 02:39:13,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-03 02:39:13,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:39:13,355 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:39:13,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:39:13,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:39:13,583 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:39:13,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:39:13,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1229343383, now seen corresponding path program 4 times [2022-11-03 02:39:13,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:39:13,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066207326] [2022-11-03 02:39:13,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:13,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:39:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:14,572 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:39:14,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:39:14,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066207326] [2022-11-03 02:39:14,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066207326] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:39:14,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199588778] [2022-11-03 02:39:14,573 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 02:39:14,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:39:14,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:39:14,574 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:39:14,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-03 02:39:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:14,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-03 02:39:14,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:39:14,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:39:14,819 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 02:39:14,820 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:39:14,929 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:39:14,938 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:39:15,080 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 02:39:15,080 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-11-03 02:39:15,106 INFO L356 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2022-11-03 02:39:15,106 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 24 [2022-11-03 02:39:15,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:39:15,115 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 18 [2022-11-03 02:39:15,276 INFO L356 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2022-11-03 02:39:15,276 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 85 [2022-11-03 02:39:15,284 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 96 [2022-11-03 02:39:15,497 INFO L356 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-03 02:39:15,498 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 195 treesize of output 158 [2022-11-03 02:39:15,529 INFO L356 Elim1Store]: treesize reduction 46, result has 27.0 percent of original size [2022-11-03 02:39:15,529 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 161 treesize of output 149 [2022-11-03 02:39:15,537 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 65 treesize of output 43 [2022-11-03 02:39:15,956 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:39:15,968 INFO L356 Elim1Store]: treesize reduction 58, result has 4.9 percent of original size [2022-11-03 02:39:15,969 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 new quantified variables, introduced 5 case distinctions, treesize of input 145 treesize of output 70 [2022-11-03 02:39:15,977 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:39:15,985 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-03 02:39:15,985 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 27 [2022-11-03 02:39:16,090 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:39:16,096 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 02:39:16,097 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 14 [2022-11-03 02:39:16,101 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:39:16,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:39:16,289 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:16,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 202 treesize of output 205 [2022-11-03 02:39:16,460 WARN L833 $PredicateComparison]: unable to prove that (or (let ((.cse5 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) .cse5 |c_ULTIMATE.start_main_~t~0#1.base|))) (.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base|) .cse5 |c_ULTIMATE.start_main_~t~0#1.offset|))) (.cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (and (forall ((v_ArrVal_902 (Array Int Int)) (v_ArrVal_904 (Array Int Int))) (= |c_ULTIMATE.start_main_~t~0#1.offset| (let ((.cse0 (store .cse3 |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_902))) (select (select .cse0 (select (select (store .cse1 |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_904) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)) (+ 4 (select (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)))))) (forall ((v_ArrVal_902 (Array Int Int)) (v_ArrVal_904 (Array Int Int))) (= (select (let ((.cse4 (store .cse1 |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_904))) (select .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (+ 4 (select (select (store .cse3 |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_902) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) |c_ULTIMATE.start_main_~t~0#1.base|))))) (and (= |c_ULTIMATE.start_main_~t~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|) (= |c_ULTIMATE.start_main_~t~0#1.offset| |c_ULTIMATE.start_main_~a~0#1.offset|))) is different from false [2022-11-03 02:39:16,496 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:16,496 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 109 treesize of output 103 [2022-11-03 02:39:16,507 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:16,508 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 122 treesize of output 116 [2022-11-03 02:39:16,998 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:16,998 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 82 [2022-11-03 02:39:17,007 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:17,008 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 62 [2022-11-03 02:39:17,122 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:17,123 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 7 new quantified variables, introduced 10 case distinctions, treesize of input 2349 treesize of output 1686 [2022-11-03 02:39:17,151 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:39:17,172 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:17,172 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 704 treesize of output 601 [2022-11-03 02:39:17,222 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:17,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 603 treesize of output 467 [2022-11-03 02:39:17,272 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:17,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 368 treesize of output 368 [2022-11-03 02:39:17,355 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:17,356 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 378 treesize of output 402 [2022-11-03 02:39:30,952 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:30,953 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 86 [2022-11-03 02:39:30,965 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:30,966 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 90 [2022-11-03 02:39:30,983 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:30,983 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 665 treesize of output 466 [2022-11-03 02:39:30,992 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:39:31,482 INFO L356 Elim1Store]: treesize reduction 122, result has 72.1 percent of original size [2022-11-03 02:39:31,482 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 1204 treesize of output 1269 [2022-11-03 02:39:31,589 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:31,589 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 623 treesize of output 475 [2022-11-03 02:39:31,633 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:31,633 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 314 treesize of output 266 [2022-11-03 02:39:31,689 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:31,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 292 treesize of output 284 [2022-11-03 02:39:31,731 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 77 [2022-11-03 02:39:35,573 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:35,573 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 82 [2022-11-03 02:39:35,583 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:35,583 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 62 [2022-11-03 02:39:35,686 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:35,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 7 new quantified variables, introduced 10 case distinctions, treesize of input 4784 treesize of output 3351 [2022-11-03 02:39:35,748 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:35,748 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 10754 treesize of output 10051 [2022-11-03 02:39:35,863 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10036 treesize of output 9092 [2022-11-03 02:39:35,930 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:35,931 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 9102 treesize of output 5954 [2022-11-03 02:39:36,107 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:36,107 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6 new quantified variables, introduced 10 case distinctions, treesize of input 5762 treesize of output 5720 [2022-11-03 02:39:36,309 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:39:36,310 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 5654 treesize of output 5522 [2022-11-03 02:41:40,681 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:41:40,681 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 86 [2022-11-03 02:41:40,691 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:41:40,691 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 90 [2022-11-03 02:41:40,709 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:41:40,709 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 346 treesize of output 243 [2022-11-03 02:41:40,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:41:41,222 INFO L356 Elim1Store]: treesize reduction 122, result has 72.1 percent of original size [2022-11-03 02:41:41,223 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 2568 treesize of output 2321 [2022-11-03 02:41:41,371 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:41:41,372 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2150 treesize of output 1574 [2022-11-03 02:41:41,431 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:41:41,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 859 treesize of output 799 [2022-11-03 02:41:41,499 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1490 treesize of output 1410 [2022-11-03 02:41:41,574 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:41:41,574 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1302 treesize of output 1262 [2022-11-03 02:41:59,585 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-03 02:41:59,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199588778] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:41:59,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1461442030] [2022-11-03 02:41:59,588 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-03 02:41:59,588 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:41:59,589 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:41:59,589 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:41:59,589 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:41:59,638 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-03 02:41:59,638 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 30 [2022-11-03 02:41:59,689 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:41:59,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 02:41:59,761 INFO L356 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-11-03 02:41:59,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 22 treesize of output 38 [2022-11-03 02:41:59,822 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-03 02:41:59,822 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-03 02:41:59,834 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:41:59,841 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:41:59,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:41:59,851 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:41:59,881 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2022-11-03 02:41:59,905 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 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 [2022-11-03 02:41:59,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:41:59,919 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-03 02:42:00,020 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:42:00,020 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 252 treesize of output 234 [2022-11-03 02:42:00,161 INFO L356 Elim1Store]: treesize reduction 120, result has 27.3 percent of original size [2022-11-03 02:42:00,161 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 248 treesize of output 276 [2022-11-03 02:42:00,211 INFO L356 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2022-11-03 02:42:00,212 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 241 treesize of output 250 [2022-11-03 02:42:00,250 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:42:00,251 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 248 treesize of output 230 [2022-11-03 02:42:00,264 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:42:00,315 INFO L356 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-03 02:42:00,316 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 244 treesize of output 245 [2022-11-03 02:42:00,800 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:42:00,800 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 645 treesize of output 546 [2022-11-03 02:42:00,848 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:42:00,849 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 537 treesize of output 522 [2022-11-03 02:42:00,869 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:42:00,942 INFO L356 Elim1Store]: treesize reduction 146, result has 13.1 percent of original size [2022-11-03 02:42:00,943 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 526 treesize of output 487 [2022-11-03 02:42:01,415 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:42:01,419 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:42:01,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:42:01,427 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:42:01,432 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:42:01,447 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:42:01,455 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:42:01,462 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:42:01,482 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:42:01,486 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:42:01,491 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:42:01,496 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:42:01,502 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:42:01,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:42:01,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2022-11-03 02:42:01,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:42:01,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:42:01,568 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:42:01,573 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:42:01,670 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:42:03,152 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4042#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 3)) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:42:03,152 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:42:03,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:42:03,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2022-11-03 02:42:03,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281379534] [2022-11-03 02:42:03,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:42:03,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-03 02:42:03,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:42:03,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-03 02:42:03,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1413, Unknown=1, NotChecked=76, Total=1640 [2022-11-03 02:42:03,154 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 30 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 29 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) [2022-11-03 02:42:06,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:06,966 INFO L93 Difference]: Finished difference Result 84 states and 99 transitions. [2022-11-03 02:42:06,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 02:42:06,967 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 29 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) Word has length 27 [2022-11-03 02:42:06,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:06,968 INFO L225 Difference]: With dead ends: 84 [2022-11-03 02:42:06,968 INFO L226 Difference]: Without dead ends: 79 [2022-11-03 02:42:06,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=216, Invalid=2235, Unknown=3, NotChecked=96, Total=2550 [2022-11-03 02:42:06,970 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:06,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 225 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 101 Invalid, 0 Unknown, 137 Unchecked, 0.1s Time] [2022-11-03 02:42:06,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-03 02:42:06,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 62. [2022-11-03 02:42:06,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.1967213114754098) internal successors, (73), 61 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) [2022-11-03 02:42:06,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2022-11-03 02:42:06,987 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 27 [2022-11-03 02:42:06,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:06,987 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2022-11-03 02:42:06,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 29 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) [2022-11-03 02:42:06,988 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2022-11-03 02:42:06,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-03 02:42:06,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:06,988 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] [2022-11-03 02:42:07,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:07,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-03 02:42:07,199 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:07,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:07,199 INFO L85 PathProgramCache]: Analyzing trace with hash -37294231, now seen corresponding path program 1 times [2022-11-03 02:42:07,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:42:07,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152087313] [2022-11-03 02:42:07,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:07,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:42:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:07,774 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:07,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:42:07,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152087313] [2022-11-03 02:42:07,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152087313] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:42:07,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841402542] [2022-11-03 02:42:07,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:07,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:42:07,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:42:07,781 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:42:07,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-03 02:42:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:07,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-03 02:42:07,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:07,907 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:42:07,966 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 02:42:07,967 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:42:07,974 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:42:07,999 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-03 02:42:08,018 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:42:08,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:42:08,091 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 02:42:08,091 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2022-11-03 02:42:08,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:42:08,146 INFO L356 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2022-11-03 02:42:08,146 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 26 [2022-11-03 02:42:08,166 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:42:08,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:42:10,159 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~p~0#1.base| Int)) (not (= (select (select (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 3)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) is different from false [2022-11-03 02:42:10,171 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_987 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_200| Int)) (not (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_987))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_200| (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_200|) |c_ULTIMATE.start_main_~t~0#1.offset| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) is different from false [2022-11-03 02:42:10,182 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_987 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_200| Int)) (not (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_987))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_200| (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_200|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) is different from false [2022-11-03 02:42:10,194 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_984 Int) (v_ArrVal_987 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_200| Int)) (not (= (select (select (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_ArrVal_984)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_987))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_200| (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_200|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) is different from false [2022-11-03 02:42:10,212 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:42:10,212 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 41 [2022-11-03 02:42:10,232 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:42:10,232 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 147 treesize of output 161 [2022-11-03 02:42:10,239 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 122 [2022-11-03 02:42:10,327 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 02:42:10,347 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:42:10,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 80 treesize of output 78 [2022-11-03 02:42:10,435 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 56 [2022-11-03 02:42:10,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 61 [2022-11-03 02:42:10,568 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 8 not checked. [2022-11-03 02:42:10,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841402542] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:42:10,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1004573036] [2022-11-03 02:42:10,570 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-03 02:42:10,571 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:42:10,571 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:42:10,571 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:42:10,572 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:42:10,617 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-03 02:42:10,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 30 [2022-11-03 02:42:10,658 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:42:10,658 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 02:42:10,691 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:42:10,738 INFO L356 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-11-03 02:42:10,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 22 treesize of output 38 [2022-11-03 02:42:10,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:42:10,749 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:42:10,810 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-03 02:42:10,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-03 02:42:10,822 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:42:10,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:42:10,843 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-03 02:42:10,854 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 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 [2022-11-03 02:42:10,866 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2022-11-03 02:42:10,934 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:42:10,935 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 252 treesize of output 234 [2022-11-03 02:42:11,069 INFO L356 Elim1Store]: treesize reduction 120, result has 27.3 percent of original size [2022-11-03 02:42:11,070 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 248 treesize of output 276 [2022-11-03 02:42:11,120 INFO L356 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2022-11-03 02:42:11,121 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 241 treesize of output 250 [2022-11-03 02:42:11,157 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:42:11,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 248 treesize of output 230 [2022-11-03 02:42:11,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:42:11,212 INFO L356 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-03 02:42:11,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 244 treesize of output 245 [2022-11-03 02:42:11,678 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:42:11,679 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 648 treesize of output 549 [2022-11-03 02:42:11,725 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:42:11,726 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 540 treesize of output 525 [2022-11-03 02:42:11,747 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:42:11,805 INFO L356 Elim1Store]: treesize reduction 146, result has 13.1 percent of original size [2022-11-03 02:42:11,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 529 treesize of output 490 [2022-11-03 02:42:12,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:42:12,259 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:42:12,263 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:42:12,269 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:42:12,274 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:42:12,287 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:42:12,295 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:42:12,302 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:42:12,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:42:12,324 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:42:12,329 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:42:12,335 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:42:12,341 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:42:12,356 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:42:12,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:42:12,372 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:42:12,392 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:42:12,398 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:42:12,403 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:42:12,471 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:42:13,388 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4449#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 2)) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 3)) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:42:13,388 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:42:13,388 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:42:13,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 22 [2022-11-03 02:42:13,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239145847] [2022-11-03 02:42:13,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:42:13,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-03 02:42:13,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:42:13,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-03 02:42:13,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=765, Unknown=4, NotChecked=236, Total=1122 [2022-11-03 02:42:13,391 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 22 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:15,089 WARN L833 $PredicateComparison]: unable to prove that (and (= (select |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base|) 1) (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~p~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (forall ((v_ArrVal_987 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_200| Int)) (not (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_987))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_200| (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_200|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 2) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|)) is different from false [2022-11-03 02:42:15,118 WARN L833 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~p~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (forall ((v_ArrVal_987 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_200| Int)) (not (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_987))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_200| (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_200|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 2) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|)) is different from false [2022-11-03 02:42:15,122 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_987 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_200| Int)) (not (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_987))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_200| (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_200|) |c_ULTIMATE.start_main_~t~0#1.offset| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~t~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~p~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 2) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|)) is different from false [2022-11-03 02:42:17,151 WARN L833 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (forall ((|ULTIMATE.start_main_~p~0#1.base| Int)) (not (= (select (select (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 3)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (= |c_ULTIMATE.start_main_~p~0#1.offset| 0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 2) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|)) is different from false [2022-11-03 02:42:17,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:17,244 INFO L93 Difference]: Finished difference Result 112 states and 131 transitions. [2022-11-03 02:42:17,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 02:42:17,244 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 22 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-03 02:42:17,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:17,245 INFO L225 Difference]: With dead ends: 112 [2022-11-03 02:42:17,245 INFO L226 Difference]: Without dead ends: 100 [2022-11-03 02:42:17,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=161, Invalid=1053, Unknown=8, NotChecked=584, Total=1806 [2022-11-03 02:42:17,247 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 36 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 193 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:17,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 170 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 135 Invalid, 0 Unknown, 193 Unchecked, 0.1s Time] [2022-11-03 02:42:17,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-03 02:42:17,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 71. [2022-11-03 02:42:17,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 70 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) [2022-11-03 02:42:17,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2022-11-03 02:42:17,264 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 27 [2022-11-03 02:42:17,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:17,264 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2022-11-03 02:42:17,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 22 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:17,265 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2022-11-03 02:42:17,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-03 02:42:17,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:17,265 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:17,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:17,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-03 02:42:17,483 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:17,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:17,483 INFO L85 PathProgramCache]: Analyzing trace with hash -636640934, now seen corresponding path program 3 times [2022-11-03 02:42:17,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:42:17,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899227060] [2022-11-03 02:42:17,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:17,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:42:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:18,059 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:42:18,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:42:18,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899227060] [2022-11-03 02:42:18,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899227060] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:42:18,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585429747] [2022-11-03 02:42:18,059 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:42:18,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:42:18,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:42:18,060 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:42:18,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-03 02:42:18,309 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:42:18,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:42:18,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-03 02:42:18,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:18,321 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:42:18,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:42:18,424 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 02:42:18,425 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-03 02:42:18,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:42:18,498 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:42:18,547 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 02:42:18,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:42:18,563 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 02:42:18,563 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 18 [2022-11-03 02:42:18,620 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:42:18,620 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 02:42:18,651 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:42:18,716 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:42:18,780 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 02:42:18,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2022-11-03 02:42:18,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:42:18,941 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:42:18,942 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2022-11-03 02:42:18,961 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:18,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:42:20,812 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~p~0#1.base| Int)) (let ((.cse0 (select (select (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 3)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 2 .cse0) (= 3 .cse0)))) is different from false [2022-11-03 02:42:20,835 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1107 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_218| Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1107))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_218| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_218|) |c_ULTIMATE.start_main_~t~0#1.offset| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 2 .cse0) (= 3 .cse0)))) is different from false [2022-11-03 02:42:20,852 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1107 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_218| Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1107))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_218| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_218|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 2) (= .cse0 3)))) is different from false [2022-11-03 02:42:20,871 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1107 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_218| Int) (v_ArrVal_1103 Int)) (let ((.cse0 (select (select (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_ArrVal_1103)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_1107))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_218| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_218|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 2) (= .cse0 3)))) is different from false [2022-11-03 02:42:21,157 INFO L356 Elim1Store]: treesize reduction 93, result has 41.5 percent of original size [2022-11-03 02:42:21,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 191 treesize of output 108 [2022-11-03 02:42:21,195 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:42:21,196 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 452 treesize of output 474 [2022-11-03 02:42:21,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 403 treesize of output 375 [2022-11-03 02:42:21,427 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 02:42:21,509 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:42:21,510 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 158 treesize of output 170 [2022-11-03 02:42:22,704 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 125 [2022-11-03 02:42:22,993 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:42:22,994 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 481 treesize of output 461 [2022-11-03 02:42:25,322 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 16 not checked. [2022-11-03 02:42:25,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585429747] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:42:25,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1988070939] [2022-11-03 02:42:25,324 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-03 02:42:25,324 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:42:25,325 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:42:25,325 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:42:25,325 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:42:25,369 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-03 02:42:25,369 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 30 [2022-11-03 02:42:25,408 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:42:25,409 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 02:42:25,483 INFO L356 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-11-03 02:42:25,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 22 treesize of output 38 [2022-11-03 02:42:25,544 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-03 02:42:25,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-03 02:42:25,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:42:25,559 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:42:25,572 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:42:25,580 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:42:25,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:42:25,608 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-03 02:42:25,620 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 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 [2022-11-03 02:42:25,631 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2022-11-03 02:42:25,724 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:42:25,724 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 252 treesize of output 234 [2022-11-03 02:42:25,810 INFO L356 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2022-11-03 02:42:25,811 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 243 treesize of output 252 [2022-11-03 02:42:25,930 INFO L356 Elim1Store]: treesize reduction 128, result has 22.4 percent of original size [2022-11-03 02:42:25,931 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 246 treesize of output 266 [2022-11-03 02:42:25,950 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:42:26,000 INFO L356 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-03 02:42:26,001 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 244 treesize of output 245 [2022-11-03 02:42:26,037 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 02:42:26,038 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 244 treesize of output 226 [2022-11-03 02:42:26,252 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:42:26,253 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 294 treesize of output 249 [2022-11-03 02:42:26,278 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:42:26,332 INFO L356 Elim1Store]: treesize reduction 146, result has 13.1 percent of original size [2022-11-03 02:42:26,332 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 253 treesize of output 238 [2022-11-03 02:42:26,378 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:42:26,378 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 240 treesize of output 237 [2022-11-03 02:42:26,515 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:42:26,520 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:42:26,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:42:26,531 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:42:26,536 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:42:26,551 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:42:26,560 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:42:26,567 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:42:26,590 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:42:26,596 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:42:26,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:42:26,606 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:42:26,611 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:42:26,628 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:42:26,637 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:42:26,645 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:42:26,669 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:42:26,675 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:42:26,681 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 02:42:26,754 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:42:28,337 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4909#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 2)) (= |ULTIMATE.start_main_~a~0#1.offset| |ULTIMATE.start_main_~p~0#1.offset|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 3)) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |ULTIMATE.start_main_~p~0#1.offset|) 1)) (= |#NULL.offset| 0) (exists ((|v_ULTIMATE.start_main_~p~0#1.offset_214| Int) (|v_ULTIMATE.start_main_~p~0#1.base_226| Int)) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~p~0#1.base_226|) |v_ULTIMATE.start_main_~p~0#1.offset_214|) 3)) (= |ULTIMATE.start_main_~a~0#1.base| |ULTIMATE.start_main_~p~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:42:28,337 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:42:28,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:42:28,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 32 [2022-11-03 02:42:28,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622573689] [2022-11-03 02:42:28,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:42:28,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-03 02:42:28,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:42:28,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-03 02:42:28,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1614, Unknown=8, NotChecked=340, Total=2162 [2022-11-03 02:42:28,340 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand has 33 states, 33 states have (on average 2.303030303030303) internal successors, (76), 32 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) [2022-11-03 02:42:30,372 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (= .cse0 1) (not (= |c_ULTIMATE.start_main_~t~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~t~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~p~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (forall ((v_ArrVal_1107 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_218| Int)) (let ((.cse1 (select (select (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1107))) (store .cse2 |v_ULTIMATE.start_main_~p~0#1.base_218| (store (select .cse2 |v_ULTIMATE.start_main_~p~0#1.base_218|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse1 2) (= .cse1 3)))) (not (= .cse0 0)) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~p~0#1.offset| 0) (= (select .cse3 0) 2) (= 2 (select .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|)) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|))) is different from false [2022-11-03 02:42:30,383 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (= .cse0 1) (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~p~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (forall ((v_ArrVal_1107 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_218| Int)) (let ((.cse1 (select (select (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1107))) (store .cse2 |v_ULTIMATE.start_main_~p~0#1.base_218| (store (select .cse2 |v_ULTIMATE.start_main_~p~0#1.base_218|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse1 2) (= .cse1 3)))) (not (= .cse0 0)) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~p~0#1.offset| 0) (= (select .cse3 0) 2) (= 2 (select .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|)) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|))) is different from false [2022-11-03 02:42:30,412 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|)) (.cse5 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (not (= |c_ULTIMATE.start_main_~t~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (forall ((v_ArrVal_1107 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_218| Int) (v_ArrVal_1103 Int)) (let ((.cse0 (select (select (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse2 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_ArrVal_1103)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_1107))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_218| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_218|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 2) (= .cse0 3)))) (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= 2 (select .cse2 |c_ULTIMATE.start_main_~p~0#1.offset|)) (forall ((v_ArrVal_1107 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_218| Int)) (let ((.cse3 (select (select (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1107))) (store .cse4 |v_ULTIMATE.start_main_~p~0#1.base_218| (store (select .cse4 |v_ULTIMATE.start_main_~p~0#1.base_218|) |c_ULTIMATE.start_main_~t~0#1.offset| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 2 .cse3) (= 3 .cse3)))) (= |c_ULTIMATE.start_main_~t~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~p~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (not (= (select |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base|) 0)) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~p~0#1.offset| 0) (= (select .cse5 0) 2) (= 2 (select .cse5 |c_ULTIMATE.start_main_~a~0#1.offset|)) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|))) is different from false [2022-11-03 02:42:30,537 WARN L833 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~p~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (forall ((v_ArrVal_1107 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_218| Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1107))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_218| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_218|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 2) (= .cse0 3)))) (not (= (select |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base|) 0)) (= |c_ULTIMATE.start_main_~p~0#1.offset| 0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 2) (forall ((|ULTIMATE.start_main_~p~0#1.base| Int)) (let ((.cse2 (select (select (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 3)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 2 .cse2) (= 3 .cse2)))) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|)) is different from false [2022-11-03 02:42:32,620 WARN L833 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~p~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~p~0#1.offset| 0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 2) (forall ((|ULTIMATE.start_main_~p~0#1.base| Int)) (let ((.cse0 (select (select (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 3)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 2 .cse0) (= 3 .cse0)))) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|)) is different from false [2022-11-03 02:42:32,625 WARN L833 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_main_~t~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (forall ((v_ArrVal_1107 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_218| Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1107))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_218| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_218|) |c_ULTIMATE.start_main_~t~0#1.offset| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 2 .cse0) (= 3 .cse0)))) (= |c_ULTIMATE.start_main_~t~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~p~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (not (= (select |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base|) 0)) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 2) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|)) is different from false [2022-11-03 02:42:33,690 WARN L833 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~p~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (not (= (select |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base|) 0)) (= |c_ULTIMATE.start_main_~p~0#1.offset| 0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 2) (forall ((|ULTIMATE.start_main_~p~0#1.base| Int)) (let ((.cse0 (select (select (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 3)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 2 .cse0) (= 3 .cse0)))) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|)) is different from false [2022-11-03 02:42:39,439 WARN L833 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_main_~t~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~t~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~p~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (forall ((v_ArrVal_1107 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_218| Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1107))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_218| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_218|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 2) (= .cse0 3)))) (not (= (select |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base|) 0)) (= |c_ULTIMATE.start_main_~p~0#1.offset| 0) (forall ((v_ArrVal_1107 (Array Int Int)) (|v_ULTIMATE.start_main_~t~0#1.base_61| Int) (|v_ULTIMATE.start_main_~p~0#1.base_218| Int) (|ULTIMATE.start_main_~p~0#1.base| Int) (v_ArrVal_1103 Int)) (let ((.cse2 (select (select (let ((.cse3 (store (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 2) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_ArrVal_1103)) |v_ULTIMATE.start_main_~t~0#1.base_61| v_ArrVal_1107))) (store .cse3 |v_ULTIMATE.start_main_~p~0#1.base_218| (store (select .cse3 |v_ULTIMATE.start_main_~p~0#1.base_218|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 3 .cse2) (= 2 .cse2) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_61|) 0))))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 2) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|)) is different from false [2022-11-03 02:42:39,446 WARN L833 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~p~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (forall ((v_ArrVal_1107 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_218| Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1107))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_218| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_218|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 2) (= .cse0 3)))) (not (= (select |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base|) 0)) (= |c_ULTIMATE.start_main_~p~0#1.offset| 0) (forall ((v_ArrVal_1107 (Array Int Int)) (|v_ULTIMATE.start_main_~t~0#1.base_61| Int) (|v_ULTIMATE.start_main_~p~0#1.base_218| Int) (|ULTIMATE.start_main_~p~0#1.base| Int) (v_ArrVal_1103 Int)) (let ((.cse2 (select (select (let ((.cse3 (store (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 2) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_ArrVal_1103)) |v_ULTIMATE.start_main_~t~0#1.base_61| v_ArrVal_1107))) (store .cse3 |v_ULTIMATE.start_main_~p~0#1.base_218| (store (select .cse3 |v_ULTIMATE.start_main_~p~0#1.base_218|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 3 .cse2) (= 2 .cse2) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_61|) 0))))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 2) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|)) is different from false [2022-11-03 02:42:39,525 WARN L833 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_main_~t~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (forall ((v_ArrVal_1107 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_218| Int) (v_ArrVal_1103 Int)) (let ((.cse0 (select (select (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_ArrVal_1103)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_1107))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_218| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_218|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 2) (= .cse0 3)))) (<= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (forall ((v_ArrVal_1107 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_218| Int)) (let ((.cse2 (select (select (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1107))) (store .cse3 |v_ULTIMATE.start_main_~p~0#1.base_218| (store (select .cse3 |v_ULTIMATE.start_main_~p~0#1.base_218|) |c_ULTIMATE.start_main_~t~0#1.offset| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 2 .cse2) (= 3 .cse2)))) (= |c_ULTIMATE.start_main_~t~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~p~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (not (= (select |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base|) 0)) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 2) (<= 0 |c_ULTIMATE.start_main_~a~0#1.offset|)) is different from false [2022-11-03 02:42:39,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:39,528 INFO L93 Difference]: Finished difference Result 129 states and 151 transitions. [2022-11-03 02:42:39,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 02:42:39,529 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.303030303030303) internal successors, (76), 32 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) Word has length 27 [2022-11-03 02:42:39,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:39,530 INFO L225 Difference]: With dead ends: 129 [2022-11-03 02:42:39,530 INFO L226 Difference]: Without dead ends: 125 [2022-11-03 02:42:39,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 46 SyntacticMatches, 7 SemanticMatches, 68 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 1097 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=387, Invalid=2726, Unknown=23, NotChecked=1694, Total=4830 [2022-11-03 02:42:39,532 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 102 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 431 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:39,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 250 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 207 Invalid, 0 Unknown, 431 Unchecked, 0.2s Time] [2022-11-03 02:42:39,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-03 02:42:39,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 76. [2022-11-03 02:42:39,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.1866666666666668) 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) [2022-11-03 02:42:39,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 89 transitions. [2022-11-03 02:42:39,548 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 89 transitions. Word has length 27 [2022-11-03 02:42:39,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:39,548 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 89 transitions. [2022-11-03 02:42:39,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.303030303030303) internal successors, (76), 32 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) [2022-11-03 02:42:39,548 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 89 transitions. [2022-11-03 02:42:39,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-03 02:42:39,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:39,549 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:39,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:39,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-03 02:42:39,750 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:39,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:39,750 INFO L85 PathProgramCache]: Analyzing trace with hash 431662633, now seen corresponding path program 1 times [2022-11-03 02:42:39,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:42:39,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002412866] [2022-11-03 02:42:39,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:39,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:42:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:40,700 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:40,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:42:40,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002412866] [2022-11-03 02:42:40,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002412866] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:42:40,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106851804] [2022-11-03 02:42:40,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:40,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:42:40,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:42:40,702 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:42:40,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb5319b-f081-455a-a0cf-f2e060c8a4c5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-03 02:42:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:40,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-03 02:42:40,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:40,834 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:42:40,885 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 02:42:40,885 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:42:40,974 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:42:40,981 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:42:41,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:42:41,134 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 25 [2022-11-03 02:42:41,147 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 02:42:41,148 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-11-03 02:42:41,164 INFO L356 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2022-11-03 02:42:41,164 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 24 [2022-11-03 02:42:41,278 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:42:41,289 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-03 02:42:41,290 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 85 [2022-11-03 02:42:41,296 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 99 [2022-11-03 02:42:41,495 INFO L356 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-03 02:42:41,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 185 treesize of output 150 [2022-11-03 02:42:41,522 INFO L356 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2022-11-03 02:42:41,522 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 170 treesize of output 156 [2022-11-03 02:42:41,528 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 65 treesize of output 43 [2022-11-03 02:42:41,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:42:41,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:42:41,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:42:41,966 INFO L356 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-11-03 02:42:41,967 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 new quantified variables, introduced 5 case distinctions, treesize of input 135 treesize of output 70 [2022-11-03 02:42:41,973 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:42:41,979 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-03 02:42:41,979 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 30 [2022-11-03 02:42:42,075 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:42:42,082 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 02:42:42,082 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 14 [2022-11-03 02:42:42,086 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:42,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:42:42,235 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:42:42,236 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 202 treesize of output 205 [2022-11-03 02:42:42,507 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:42:42,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 109 treesize of output 103 [2022-11-03 02:42:42,516 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:42:42,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 122 treesize of output 116 [2022-11-03 02:42:43,193 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:42:43,194 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 82 [2022-11-03 02:42:43,202 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:42:43,203 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 62 [2022-11-03 02:42:43,218 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:42:43,218 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 214 treesize of output 213 [2022-11-03 02:42:44,151 INFO L356 Elim1Store]: treesize reduction 414, result has 57.9 percent of original size [2022-11-03 02:42:44,152 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 12 new quantified variables, introduced 55 case distinctions, treesize of input 7280 treesize of output 6817 [2022-11-03 02:42:44,293 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:42:44,294 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6364 treesize of output 5056 [2022-11-03 02:42:44,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5078 treesize of output 4134 [2022-11-03 02:42:44,577 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:42:44,578 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6 new quantified variables, introduced 10 case distinctions, treesize of input 4188 treesize of output 3774 [2022-11-03 02:42:44,870 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:42:44,871 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 3696 treesize of output 3132 [2022-11-03 02:50:21,754 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:50:21,755 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 86 [2022-11-03 02:50:21,766 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:50:21,767 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 66 [2022-11-03 02:50:21,772 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:50:21,789 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:50:21,790 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 107 [2022-11-03 02:50:21,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:50:22,098 INFO L356 Elim1Store]: treesize reduction 38, result has 82.6 percent of original size [2022-11-03 02:50:22,099 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 598 treesize of output 651 [2022-11-03 02:50:22,191 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:50:22,191 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 566 treesize of output 434 [2022-11-03 02:50:22,230 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:50:22,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 282 treesize of output 242 [2022-11-03 02:50:22,280 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:50:22,281 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 292 treesize of output 284 [2022-11-03 02:50:30,016 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:50:30,016 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 82 [2022-11-03 02:50:30,029 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:50:30,030 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 62 [2022-11-03 02:50:30,036 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:50:30,065 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:50:30,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 100 treesize of output 99 [2022-11-03 02:50:30,073 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:50:30,436 INFO L356 Elim1Store]: treesize reduction 42, result has 82.1 percent of original size [2022-11-03 02:50:30,436 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 748 treesize of output 803 [2022-11-03 02:50:30,484 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:50:30,485 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 701 treesize of output 485 [2022-11-03 02:50:30,575 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:50:30,575 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 492 treesize of output 472 [2022-11-03 02:50:30,634 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:50:30,635 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 326 treesize of output 310