./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0521.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b 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_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0521.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aa94cb741c9c7eaa2ca9bb871f44dd4c619faf21975944b61e221a61ad9730d7 --- 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-8393723 [2022-11-19 07:07:40,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:07:40,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:07:40,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:07:40,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:07:40,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:07:40,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:07:40,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:07:40,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:07:40,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:07:40,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:07:40,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:07:40,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:07:40,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:07:40,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:07:40,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:07:40,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:07:40,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:07:40,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:07:40,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:07:40,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:07:40,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:07:40,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:07:40,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:07:40,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:07:40,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:07:40,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:07:40,406 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:07:40,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:07:40,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:07:40,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:07:40,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:07:40,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:07:40,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:07:40,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:07:40,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:07:40,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:07:40,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:07:40,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:07:40,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:07:40,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:07:40,424 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-19 07:07:40,475 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:07:40,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:07:40,476 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:07:40,476 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:07:40,477 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:07:40,478 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:07:40,478 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:07:40,478 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:07:40,479 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:07:40,479 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:07:40,480 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:07:40,481 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:07:40,481 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:07:40,481 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:07:40,481 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:07:40,482 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:07:40,482 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:07:40,482 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:07:40,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 07:07:40,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 07:07:40,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:07:40,485 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:07:40,486 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:07:40,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:07:40,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:07:40,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:07:40,487 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 07:07:40,487 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 07:07:40,487 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 07:07:40,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:07:40,488 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:07:40,488 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:07:40,489 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:07:40,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:07:40,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:07:40,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:07:40,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:07:40,490 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:07:40,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:07:40,490 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:07:40,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:07:40,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:07:40,491 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_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa94cb741c9c7eaa2ca9bb871f44dd4c619faf21975944b61e221a61ad9730d7 [2022-11-19 07:07:40,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:07:40,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:07:40,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:07:40,896 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:07:40,898 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:07:40,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/memsafety/test-0521.i [2022-11-19 07:07:40,970 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/data/61c76065d/b8de340d3d0b4c92a0c20453155912f3/FLAGbe062f1ff [2022-11-19 07:07:41,633 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:07:41,634 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/sv-benchmarks/c/memsafety/test-0521.i [2022-11-19 07:07:41,650 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/data/61c76065d/b8de340d3d0b4c92a0c20453155912f3/FLAGbe062f1ff [2022-11-19 07:07:41,942 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/data/61c76065d/b8de340d3d0b4c92a0c20453155912f3 [2022-11-19 07:07:41,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:07:41,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:07:41,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:07:41,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:07:41,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:07:41,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:07:41" (1/1) ... [2022-11-19 07:07:41,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38a6d2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:41, skipping insertion in model container [2022-11-19 07:07:41,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:07:41" (1/1) ... [2022-11-19 07:07:41,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:07:42,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:07:42,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:07:42,506 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:07:42,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:07:42,603 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:07:42,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:42 WrapperNode [2022-11-19 07:07:42,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:07:42,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:07:42,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:07:42,606 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:07:42,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:42" (1/1) ... [2022-11-19 07:07:42,631 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:42" (1/1) ... [2022-11-19 07:07:42,664 INFO L138 Inliner]: procedures = 125, calls = 95, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 305 [2022-11-19 07:07:42,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:07:42,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:07:42,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:07:42,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:07:42,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:42" (1/1) ... [2022-11-19 07:07:42,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:42" (1/1) ... [2022-11-19 07:07:42,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:42" (1/1) ... [2022-11-19 07:07:42,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:42" (1/1) ... [2022-11-19 07:07:42,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:42" (1/1) ... [2022-11-19 07:07:42,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:42" (1/1) ... [2022-11-19 07:07:42,705 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:42" (1/1) ... [2022-11-19 07:07:42,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:42" (1/1) ... [2022-11-19 07:07:42,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:07:42,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:07:42,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:07:42,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:07:42,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:42" (1/1) ... [2022-11-19 07:07:42,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:07:42,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:07:42,782 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:07:42,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:07:42,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:07:42,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:07:42,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:07:42,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:07:42,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:07:42,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:07:42,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:07:42,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:07:42,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:07:42,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:07:42,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:07:43,034 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:07:43,037 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:07:44,070 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:07:44,173 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:07:44,174 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-19 07:07:44,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:07:44 BoogieIcfgContainer [2022-11-19 07:07:44,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:07:44,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:07:44,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:07:44,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:07:44,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:07:41" (1/3) ... [2022-11-19 07:07:44,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dff4518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:07:44, skipping insertion in model container [2022-11-19 07:07:44,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:42" (2/3) ... [2022-11-19 07:07:44,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dff4518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:07:44, skipping insertion in model container [2022-11-19 07:07:44,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:07:44" (3/3) ... [2022-11-19 07:07:44,193 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0521.i [2022-11-19 07:07:44,217 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:07:44,217 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 152 error locations. [2022-11-19 07:07:44,287 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:07:44,297 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@42bb3d9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:07:44,298 INFO L358 AbstractCegarLoop]: Starting to check reachability of 152 error locations. [2022-11-19 07:07:44,309 INFO L276 IsEmpty]: Start isEmpty. Operand has 274 states, 121 states have (on average 2.4958677685950414) internal successors, (302), 273 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:44,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 07:07:44,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:44,321 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 07:07:44,321 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:07:44,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:44,331 INFO L85 PathProgramCache]: Analyzing trace with hash 16140635, now seen corresponding path program 1 times [2022-11-19 07:07:44,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:44,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022822549] [2022-11-19 07:07:44,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:44,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:44,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:07:44,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:44,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022822549] [2022-11-19 07:07:44,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022822549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:44,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:44,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:07:44,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610244383] [2022-11-19 07:07:44,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:44,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:07:44,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:44,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:07:44,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:44,676 INFO L87 Difference]: Start difference. First operand has 274 states, 121 states have (on average 2.4958677685950414) internal successors, (302), 273 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:45,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:45,261 INFO L93 Difference]: Finished difference Result 355 states and 389 transitions. [2022-11-19 07:07:45,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:07:45,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-11-19 07:07:45,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:45,289 INFO L225 Difference]: With dead ends: 355 [2022-11-19 07:07:45,289 INFO L226 Difference]: Without dead ends: 354 [2022-11-19 07:07:45,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:45,296 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 98 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:45,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 429 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:07:45,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-11-19 07:07:45,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 271. [2022-11-19 07:07:45,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 121 states have (on average 2.446280991735537) internal successors, (296), 270 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:45,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 296 transitions. [2022-11-19 07:07:45,365 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 296 transitions. Word has length 4 [2022-11-19 07:07:45,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:45,365 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 296 transitions. [2022-11-19 07:07:45,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:45,366 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 296 transitions. [2022-11-19 07:07:45,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 07:07:45,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:45,367 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 07:07:45,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:07:45,367 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:07:45,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:45,368 INFO L85 PathProgramCache]: Analyzing trace with hash 16140636, now seen corresponding path program 1 times [2022-11-19 07:07:45,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:45,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913385586] [2022-11-19 07:07:45,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:45,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:45,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:07:45,486 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:45,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913385586] [2022-11-19 07:07:45,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913385586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:45,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:45,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:07:45,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29615414] [2022-11-19 07:07:45,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:45,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:07:45,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:45,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:07:45,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:45,490 INFO L87 Difference]: Start difference. First operand 271 states and 296 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:46,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:46,039 INFO L93 Difference]: Finished difference Result 473 states and 520 transitions. [2022-11-19 07:07:46,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:07:46,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-11-19 07:07:46,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:46,042 INFO L225 Difference]: With dead ends: 473 [2022-11-19 07:07:46,042 INFO L226 Difference]: Without dead ends: 473 [2022-11-19 07:07:46,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:46,044 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 229 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:46,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 507 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:07:46,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-11-19 07:07:46,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 269. [2022-11-19 07:07:46,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 121 states have (on average 2.4297520661157024) internal successors, (294), 268 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:46,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 294 transitions. [2022-11-19 07:07:46,061 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 294 transitions. Word has length 4 [2022-11-19 07:07:46,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:46,062 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 294 transitions. [2022-11-19 07:07:46,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:46,062 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 294 transitions. [2022-11-19 07:07:46,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:07:46,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:46,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:07:46,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:07:46,083 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:07:46,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:46,085 INFO L85 PathProgramCache]: Analyzing trace with hash 499844386, now seen corresponding path program 1 times [2022-11-19 07:07:46,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:46,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119440004] [2022-11-19 07:07:46,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:46,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:46,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:07:46,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:46,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119440004] [2022-11-19 07:07:46,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119440004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:46,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:46,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:07:46,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278499038] [2022-11-19 07:07:46,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:46,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:07:46,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:46,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:07:46,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:46,208 INFO L87 Difference]: Start difference. First operand 269 states and 294 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:46,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:46,509 INFO L93 Difference]: Finished difference Result 253 states and 278 transitions. [2022-11-19 07:07:46,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:07:46,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 07:07:46,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:46,512 INFO L225 Difference]: With dead ends: 253 [2022-11-19 07:07:46,512 INFO L226 Difference]: Without dead ends: 253 [2022-11-19 07:07:46,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:46,516 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 71 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:46,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 293 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:07:46,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-11-19 07:07:46,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2022-11-19 07:07:46,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 121 states have (on average 2.2975206611570247) internal successors, (278), 252 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:46,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 278 transitions. [2022-11-19 07:07:46,530 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 278 transitions. Word has length 5 [2022-11-19 07:07:46,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:46,531 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 278 transitions. [2022-11-19 07:07:46,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:46,531 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 278 transitions. [2022-11-19 07:07:46,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:07:46,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:46,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:07:46,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:07:46,544 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:07:46,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:46,546 INFO L85 PathProgramCache]: Analyzing trace with hash 499844387, now seen corresponding path program 1 times [2022-11-19 07:07:46,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:46,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930540490] [2022-11-19 07:07:46,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:46,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:46,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:07:46,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:46,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930540490] [2022-11-19 07:07:46,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930540490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:46,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:46,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:07:46,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257040644] [2022-11-19 07:07:46,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:46,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:07:46,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:46,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:07:46,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:46,652 INFO L87 Difference]: Start difference. First operand 253 states and 278 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:46,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:46,905 INFO L93 Difference]: Finished difference Result 237 states and 262 transitions. [2022-11-19 07:07:46,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:07:46,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 07:07:46,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:46,908 INFO L225 Difference]: With dead ends: 237 [2022-11-19 07:07:46,908 INFO L226 Difference]: Without dead ends: 237 [2022-11-19 07:07:46,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:46,909 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 55 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:46,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 301 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:07:46,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-19 07:07:46,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2022-11-19 07:07:46,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 121 states have (on average 2.165289256198347) internal successors, (262), 236 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:46,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 262 transitions. [2022-11-19 07:07:46,918 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 262 transitions. Word has length 5 [2022-11-19 07:07:46,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:46,919 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 262 transitions. [2022-11-19 07:07:46,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:46,919 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 262 transitions. [2022-11-19 07:07:46,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 07:07:46,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:46,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 07:07:46,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:07:46,920 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:07:46,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:46,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1668216808, now seen corresponding path program 1 times [2022-11-19 07:07:46,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:46,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235400852] [2022-11-19 07:07:46,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:46,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:47,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:07:47,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:47,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235400852] [2022-11-19 07:07:47,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235400852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:47,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:47,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:07:47,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215654701] [2022-11-19 07:07:47,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:47,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:07:47,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:47,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:07:47,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:47,038 INFO L87 Difference]: Start difference. First operand 237 states and 262 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:47,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:47,363 INFO L93 Difference]: Finished difference Result 288 states and 322 transitions. [2022-11-19 07:07:47,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:07:47,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-19 07:07:47,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:47,365 INFO L225 Difference]: With dead ends: 288 [2022-11-19 07:07:47,366 INFO L226 Difference]: Without dead ends: 288 [2022-11-19 07:07:47,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:47,367 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 62 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:47,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 363 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:07:47,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-11-19 07:07:47,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 235. [2022-11-19 07:07:47,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 121 states have (on average 2.1487603305785123) internal successors, (260), 234 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:47,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 260 transitions. [2022-11-19 07:07:47,375 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 260 transitions. Word has length 6 [2022-11-19 07:07:47,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:47,375 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 260 transitions. [2022-11-19 07:07:47,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:47,376 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 260 transitions. [2022-11-19 07:07:47,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 07:07:47,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:47,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 07:07:47,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:07:47,377 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:07:47,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:47,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1668216807, now seen corresponding path program 1 times [2022-11-19 07:07:47,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:47,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543862689] [2022-11-19 07:07:47,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:47,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:47,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:07:47,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:47,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543862689] [2022-11-19 07:07:47,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543862689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:47,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:47,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:07:47,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489584156] [2022-11-19 07:07:47,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:47,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:07:47,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:47,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:07:47,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:47,556 INFO L87 Difference]: Start difference. First operand 235 states and 260 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:47,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:47,976 INFO L93 Difference]: Finished difference Result 407 states and 454 transitions. [2022-11-19 07:07:47,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:07:47,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-19 07:07:47,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:47,979 INFO L225 Difference]: With dead ends: 407 [2022-11-19 07:07:47,979 INFO L226 Difference]: Without dead ends: 407 [2022-11-19 07:07:47,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:47,980 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 193 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:47,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 441 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:07:47,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-11-19 07:07:47,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 233. [2022-11-19 07:07:47,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 121 states have (on average 2.1322314049586777) internal successors, (258), 232 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:47,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 258 transitions. [2022-11-19 07:07:47,994 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 258 transitions. Word has length 6 [2022-11-19 07:07:47,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:47,994 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 258 transitions. [2022-11-19 07:07:47,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:47,995 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 258 transitions. [2022-11-19 07:07:47,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 07:07:47,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:47,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:47,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:07:47,996 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:07:47,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:47,997 INFO L85 PathProgramCache]: Analyzing trace with hash -685881597, now seen corresponding path program 1 times [2022-11-19 07:07:47,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:47,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244367013] [2022-11-19 07:07:47,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:47,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:48,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:07:48,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:48,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244367013] [2022-11-19 07:07:48,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244367013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:48,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:48,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:07:48,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368249117] [2022-11-19 07:07:48,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:48,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:07:48,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:48,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:07:48,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:07:48,087 INFO L87 Difference]: Start difference. First operand 233 states and 258 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:48,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:48,366 INFO L93 Difference]: Finished difference Result 575 states and 638 transitions. [2022-11-19 07:07:48,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:07:48,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2022-11-19 07:07:48,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:48,377 INFO L225 Difference]: With dead ends: 575 [2022-11-19 07:07:48,378 INFO L226 Difference]: Without dead ends: 575 [2022-11-19 07:07:48,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:07:48,384 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 507 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:48,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 636 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:07:48,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-11-19 07:07:48,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 238. [2022-11-19 07:07:48,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 126 states have (on average 2.0952380952380953) internal successors, (264), 237 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:48,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 264 transitions. [2022-11-19 07:07:48,411 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 264 transitions. Word has length 7 [2022-11-19 07:07:48,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:48,411 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 264 transitions. [2022-11-19 07:07:48,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:48,412 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 264 transitions. [2022-11-19 07:07:48,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 07:07:48,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:48,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:48,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:07:48,414 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:07:48,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:48,416 INFO L85 PathProgramCache]: Analyzing trace with hash 281311273, now seen corresponding path program 1 times [2022-11-19 07:07:48,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:48,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026515370] [2022-11-19 07:07:48,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:48,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:48,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:07:48,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:48,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026515370] [2022-11-19 07:07:48,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026515370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:48,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:48,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:07:48,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147334219] [2022-11-19 07:07:48,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:48,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:07:48,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:48,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:07:48,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:07:48,700 INFO L87 Difference]: Start difference. First operand 238 states and 264 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:49,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:49,147 INFO L93 Difference]: Finished difference Result 571 states and 634 transitions. [2022-11-19 07:07:49,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:07:49,148 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-19 07:07:49,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:49,151 INFO L225 Difference]: With dead ends: 571 [2022-11-19 07:07:49,151 INFO L226 Difference]: Without dead ends: 571 [2022-11-19 07:07:49,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:07:49,153 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 499 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:49,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 1022 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:07:49,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-11-19 07:07:49,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 241. [2022-11-19 07:07:49,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 129 states have (on average 2.0697674418604652) internal successors, (267), 240 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:49,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 267 transitions. [2022-11-19 07:07:49,163 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 267 transitions. Word has length 11 [2022-11-19 07:07:49,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:49,164 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 267 transitions. [2022-11-19 07:07:49,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:49,164 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 267 transitions. [2022-11-19 07:07:49,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 07:07:49,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:49,165 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:49,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:07:49,166 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:07:49,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:49,167 INFO L85 PathProgramCache]: Analyzing trace with hash -589468412, now seen corresponding path program 1 times [2022-11-19 07:07:49,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:49,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513452027] [2022-11-19 07:07:49,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:49,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:49,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:07:49,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:49,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513452027] [2022-11-19 07:07:49,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513452027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:49,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:49,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:07:49,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358323298] [2022-11-19 07:07:49,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:49,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:07:49,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:49,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:07:49,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:07:49,336 INFO L87 Difference]: Start difference. First operand 241 states and 267 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:49,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:49,905 INFO L93 Difference]: Finished difference Result 279 states and 310 transitions. [2022-11-19 07:07:49,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:07:49,905 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-19 07:07:49,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:49,907 INFO L225 Difference]: With dead ends: 279 [2022-11-19 07:07:49,907 INFO L226 Difference]: Without dead ends: 279 [2022-11-19 07:07:49,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:07:49,908 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 184 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:49,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 624 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:07:49,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-11-19 07:07:49,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 243. [2022-11-19 07:07:49,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 133 states have (on average 2.045112781954887) internal successors, (272), 242 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:49,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 272 transitions. [2022-11-19 07:07:49,917 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 272 transitions. Word has length 13 [2022-11-19 07:07:49,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:49,917 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 272 transitions. [2022-11-19 07:07:49,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:49,918 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 272 transitions. [2022-11-19 07:07:49,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 07:07:49,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:49,919 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:49,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:07:49,920 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:07:49,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:49,921 INFO L85 PathProgramCache]: Analyzing trace with hash -589468411, now seen corresponding path program 1 times [2022-11-19 07:07:49,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:49,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239796641] [2022-11-19 07:07:49,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:49,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:50,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:07:50,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:50,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239796641] [2022-11-19 07:07:50,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239796641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:50,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:50,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:07:50,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424745564] [2022-11-19 07:07:50,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:50,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:07:50,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:50,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:07:50,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:07:50,113 INFO L87 Difference]: Start difference. First operand 243 states and 272 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:50,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:50,792 INFO L93 Difference]: Finished difference Result 391 states and 440 transitions. [2022-11-19 07:07:50,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:07:50,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-19 07:07:50,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:50,795 INFO L225 Difference]: With dead ends: 391 [2022-11-19 07:07:50,795 INFO L226 Difference]: Without dead ends: 391 [2022-11-19 07:07:50,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:07:50,796 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 446 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:50,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 670 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:07:50,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-11-19 07:07:50,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 242. [2022-11-19 07:07:50,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 133 states have (on average 2.037593984962406) internal successors, (271), 241 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:50,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 271 transitions. [2022-11-19 07:07:50,806 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 271 transitions. Word has length 13 [2022-11-19 07:07:50,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:50,806 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 271 transitions. [2022-11-19 07:07:50,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:50,807 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 271 transitions. [2022-11-19 07:07:50,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 07:07:50,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:50,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:50,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:07:50,809 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:07:50,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:50,809 INFO L85 PathProgramCache]: Analyzing trace with hash -244042145, now seen corresponding path program 1 times [2022-11-19 07:07:50,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:50,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648857433] [2022-11-19 07:07:50,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:50,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:50,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:07:50,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:50,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648857433] [2022-11-19 07:07:50,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648857433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:50,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:50,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:07:50,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194148370] [2022-11-19 07:07:50,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:50,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:07:50,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:50,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:07:50,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:07:50,918 INFO L87 Difference]: Start difference. First operand 242 states and 271 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:51,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:51,173 INFO L93 Difference]: Finished difference Result 356 states and 396 transitions. [2022-11-19 07:07:51,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:07:51,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-19 07:07:51,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:51,176 INFO L225 Difference]: With dead ends: 356 [2022-11-19 07:07:51,176 INFO L226 Difference]: Without dead ends: 356 [2022-11-19 07:07:51,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:07:51,177 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 218 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:51,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 825 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:07:51,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-19 07:07:51,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 297. [2022-11-19 07:07:51,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 188 states have (on average 2.074468085106383) internal successors, (390), 296 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:51,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 390 transitions. [2022-11-19 07:07:51,186 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 390 transitions. Word has length 13 [2022-11-19 07:07:51,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:51,187 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 390 transitions. [2022-11-19 07:07:51,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:51,187 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 390 transitions. [2022-11-19 07:07:51,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 07:07:51,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:51,188 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:51,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 07:07:51,189 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:07:51,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:51,190 INFO L85 PathProgramCache]: Analyzing trace with hash 633132918, now seen corresponding path program 1 times [2022-11-19 07:07:51,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:51,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966961475] [2022-11-19 07:07:51,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:51,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:51,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:07:51,226 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:51,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966961475] [2022-11-19 07:07:51,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966961475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:51,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:51,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:07:51,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022730102] [2022-11-19 07:07:51,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:51,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:07:51,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:51,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:07:51,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:51,229 INFO L87 Difference]: Start difference. First operand 297 states and 390 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:51,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:51,316 INFO L93 Difference]: Finished difference Result 284 states and 367 transitions. [2022-11-19 07:07:51,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:07:51,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-19 07:07:51,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:51,320 INFO L225 Difference]: With dead ends: 284 [2022-11-19 07:07:51,320 INFO L226 Difference]: Without dead ends: 284 [2022-11-19 07:07:51,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:51,322 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 193 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:51,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 261 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:07:51,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-19 07:07:51,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2022-11-19 07:07:51,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 175 states have (on average 2.097142857142857) internal successors, (367), 283 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:51,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 367 transitions. [2022-11-19 07:07:51,330 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 367 transitions. Word has length 14 [2022-11-19 07:07:51,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:51,330 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 367 transitions. [2022-11-19 07:07:51,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:51,331 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 367 transitions. [2022-11-19 07:07:51,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 07:07:51,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:51,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:51,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 07:07:51,333 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:07:51,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:51,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1698896675, now seen corresponding path program 1 times [2022-11-19 07:07:51,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:51,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414441831] [2022-11-19 07:07:51,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:51,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:51,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:07:51,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:51,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414441831] [2022-11-19 07:07:51,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414441831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:51,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:51,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:07:51,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065728147] [2022-11-19 07:07:51,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:51,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:07:51,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:51,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:07:51,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:51,408 INFO L87 Difference]: Start difference. First operand 284 states and 367 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:51,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:51,656 INFO L93 Difference]: Finished difference Result 268 states and 335 transitions. [2022-11-19 07:07:51,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:07:51,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-19 07:07:51,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:51,658 INFO L225 Difference]: With dead ends: 268 [2022-11-19 07:07:51,658 INFO L226 Difference]: Without dead ends: 268 [2022-11-19 07:07:51,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:51,659 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 71 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:51,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 235 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:07:51,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-19 07:07:51,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2022-11-19 07:07:51,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 175 states have (on average 1.9142857142857144) internal successors, (335), 267 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:51,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 335 transitions. [2022-11-19 07:07:51,667 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 335 transitions. Word has length 15 [2022-11-19 07:07:51,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:51,668 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 335 transitions. [2022-11-19 07:07:51,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:51,668 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 335 transitions. [2022-11-19 07:07:51,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 07:07:51,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:51,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:51,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 07:07:51,677 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr94REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:07:51,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:51,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1698896676, now seen corresponding path program 1 times [2022-11-19 07:07:51,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:51,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354805238] [2022-11-19 07:07:51,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:51,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:51,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:07:51,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:51,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354805238] [2022-11-19 07:07:51,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354805238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:51,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:51,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:07:51,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356934842] [2022-11-19 07:07:51,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:51,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:07:51,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:51,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:07:51,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:51,739 INFO L87 Difference]: Start difference. First operand 268 states and 335 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:51,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:51,973 INFO L93 Difference]: Finished difference Result 252 states and 303 transitions. [2022-11-19 07:07:51,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:07:51,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-19 07:07:51,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:51,975 INFO L225 Difference]: With dead ends: 252 [2022-11-19 07:07:51,975 INFO L226 Difference]: Without dead ends: 252 [2022-11-19 07:07:51,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:51,976 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 55 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:51,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 242 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:07:51,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-11-19 07:07:51,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2022-11-19 07:07:51,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 175 states have (on average 1.7314285714285715) internal successors, (303), 251 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:51,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 303 transitions. [2022-11-19 07:07:51,983 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 303 transitions. Word has length 15 [2022-11-19 07:07:51,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:51,983 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 303 transitions. [2022-11-19 07:07:51,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:51,983 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 303 transitions. [2022-11-19 07:07:51,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 07:07:51,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:51,984 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:51,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-19 07:07:51,985 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:07:51,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:51,986 INFO L85 PathProgramCache]: Analyzing trace with hash 915322282, now seen corresponding path program 1 times [2022-11-19 07:07:51,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:51,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701124672] [2022-11-19 07:07:51,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:51,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:52,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:07:52,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:52,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701124672] [2022-11-19 07:07:52,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701124672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:52,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:52,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:07:52,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530161291] [2022-11-19 07:07:52,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:52,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:07:52,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:52,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:07:52,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:07:52,064 INFO L87 Difference]: Start difference. First operand 252 states and 303 transitions. Second operand has 5 states, 5 states have (on average 3.4) 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) [2022-11-19 07:07:52,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:52,267 INFO L93 Difference]: Finished difference Result 272 states and 307 transitions. [2022-11-19 07:07:52,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:07:52,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) 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 [2022-11-19 07:07:52,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:52,272 INFO L225 Difference]: With dead ends: 272 [2022-11-19 07:07:52,272 INFO L226 Difference]: Without dead ends: 272 [2022-11-19 07:07:52,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:07:52,279 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 567 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:52,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 490 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:07:52,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-11-19 07:07:52,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 252. [2022-11-19 07:07:52,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 175 states have (on average 1.7257142857142858) internal successors, (302), 251 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:52,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 302 transitions. [2022-11-19 07:07:52,288 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 302 transitions. Word has length 17 [2022-11-19 07:07:52,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:52,288 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 302 transitions. [2022-11-19 07:07:52,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) 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) [2022-11-19 07:07:52,289 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 302 transitions. [2022-11-19 07:07:52,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 07:07:52,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:52,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:52,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-19 07:07:52,291 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:07:52,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:52,292 INFO L85 PathProgramCache]: Analyzing trace with hash 552141732, now seen corresponding path program 1 times [2022-11-19 07:07:52,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:52,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236375143] [2022-11-19 07:07:52,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:52,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:52,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:07:52,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:52,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236375143] [2022-11-19 07:07:52,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236375143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:52,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:52,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:07:52,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061762881] [2022-11-19 07:07:52,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:52,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:07:52,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:52,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:07:52,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:07:52,427 INFO L87 Difference]: Start difference. First operand 252 states and 302 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 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) [2022-11-19 07:07:52,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:52,695 INFO L93 Difference]: Finished difference Result 339 states and 384 transitions. [2022-11-19 07:07:52,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:07:52,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 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 [2022-11-19 07:07:52,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:52,697 INFO L225 Difference]: With dead ends: 339 [2022-11-19 07:07:52,698 INFO L226 Difference]: Without dead ends: 339 [2022-11-19 07:07:52,698 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 [2022-11-19 07:07:52,698 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 243 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:52,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 696 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:07:52,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-11-19 07:07:52,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 250. [2022-11-19 07:07:52,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 173 states have (on average 1.716763005780347) internal successors, (297), 249 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:52,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 297 transitions. [2022-11-19 07:07:52,718 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 297 transitions. Word has length 17 [2022-11-19 07:07:52,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:52,719 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 297 transitions. [2022-11-19 07:07:52,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 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) [2022-11-19 07:07:52,720 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 297 transitions. [2022-11-19 07:07:52,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 07:07:52,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:52,722 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:52,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-19 07:07:52,722 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:07:52,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:52,723 INFO L85 PathProgramCache]: Analyzing trace with hash 944178417, now seen corresponding path program 1 times [2022-11-19 07:07:52,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:52,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662993083] [2022-11-19 07:07:52,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:52,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:53,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:07:53,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:53,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662993083] [2022-11-19 07:07:53,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662993083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:53,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:53,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-19 07:07:53,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425205358] [2022-11-19 07:07:53,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:53,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-19 07:07:53,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:53,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-19 07:07:53,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:07:53,331 INFO L87 Difference]: Start difference. First operand 250 states and 297 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:54,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:54,423 INFO L93 Difference]: Finished difference Result 252 states and 299 transitions. [2022-11-19 07:07:54,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 07:07:54,423 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-19 07:07:54,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:54,424 INFO L225 Difference]: With dead ends: 252 [2022-11-19 07:07:54,425 INFO L226 Difference]: Without dead ends: 252 [2022-11-19 07:07:54,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2022-11-19 07:07:54,425 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 244 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:54,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 871 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 07:07:54,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-11-19 07:07:54,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 249. [2022-11-19 07:07:54,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 173 states have (on average 1.7109826589595376) internal successors, (296), 248 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:54,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 296 transitions. [2022-11-19 07:07:54,432 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 296 transitions. Word has length 19 [2022-11-19 07:07:54,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:54,432 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 296 transitions. [2022-11-19 07:07:54,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:54,432 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 296 transitions. [2022-11-19 07:07:54,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 07:07:54,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:54,433 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:54,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-19 07:07:54,433 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:07:54,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:54,434 INFO L85 PathProgramCache]: Analyzing trace with hash 944178418, now seen corresponding path program 1 times [2022-11-19 07:07:54,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:54,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190974461] [2022-11-19 07:07:54,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:54,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:55,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:07:55,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:55,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190974461] [2022-11-19 07:07:55,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190974461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:55,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:55,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-19 07:07:55,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644826053] [2022-11-19 07:07:55,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:55,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 07:07:55,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:55,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 07:07:55,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:07:55,274 INFO L87 Difference]: Start difference. First operand 249 states and 296 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:57,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:57,232 INFO L93 Difference]: Finished difference Result 473 states and 560 transitions. [2022-11-19 07:07:57,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-19 07:07:57,233 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-19 07:07:57,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:57,235 INFO L225 Difference]: With dead ends: 473 [2022-11-19 07:07:57,235 INFO L226 Difference]: Without dead ends: 473 [2022-11-19 07:07:57,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2022-11-19 07:07:57,236 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 456 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:57,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1517 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1890 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-19 07:07:57,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-11-19 07:07:57,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 248. [2022-11-19 07:07:57,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 173 states have (on average 1.7052023121387283) internal successors, (295), 247 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:57,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 295 transitions. [2022-11-19 07:07:57,244 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 295 transitions. Word has length 19 [2022-11-19 07:07:57,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:57,247 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 295 transitions. [2022-11-19 07:07:57,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:57,247 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 295 transitions. [2022-11-19 07:07:57,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-19 07:07:57,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:57,248 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:57,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-19 07:07:57,248 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:07:57,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:57,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1116123431, now seen corresponding path program 1 times [2022-11-19 07:07:57,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:57,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837237450] [2022-11-19 07:07:57,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:57,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:57,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:07:57,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:57,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837237450] [2022-11-19 07:07:57,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837237450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:57,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:57,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:07:57,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067788562] [2022-11-19 07:07:57,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:57,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:07:57,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:57,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:07:57,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:07:57,456 INFO L87 Difference]: Start difference. First operand 248 states and 295 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:57,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:57,947 INFO L93 Difference]: Finished difference Result 279 states and 315 transitions. [2022-11-19 07:07:57,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 07:07:57,948 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-19 07:07:57,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:57,949 INFO L225 Difference]: With dead ends: 279 [2022-11-19 07:07:57,949 INFO L226 Difference]: Without dead ends: 279 [2022-11-19 07:07:57,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2022-11-19 07:07:57,951 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 639 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:57,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 936 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:07:57,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-11-19 07:07:57,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 248. [2022-11-19 07:07:57,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 173 states have (on average 1.699421965317919) internal successors, (294), 247 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:57,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 294 transitions. [2022-11-19 07:07:57,957 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 294 transitions. Word has length 21 [2022-11-19 07:07:57,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:57,957 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 294 transitions. [2022-11-19 07:07:57,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:57,958 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 294 transitions. [2022-11-19 07:07:57,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-19 07:07:57,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:57,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:57,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-19 07:07:57,959 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr103REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:07:57,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:57,960 INFO L85 PathProgramCache]: Analyzing trace with hash -936319035, now seen corresponding path program 1 times [2022-11-19 07:07:57,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:57,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890796236] [2022-11-19 07:07:57,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:57,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:58,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:07:58,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:58,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890796236] [2022-11-19 07:07:58,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890796236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:58,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:58,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:07:58,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57252266] [2022-11-19 07:07:58,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:58,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:07:58,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:58,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:07:58,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:07:58,167 INFO L87 Difference]: Start difference. First operand 248 states and 294 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:58,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:58,641 INFO L93 Difference]: Finished difference Result 333 states and 377 transitions. [2022-11-19 07:07:58,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 07:07:58,641 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-19 07:07:58,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:58,643 INFO L225 Difference]: With dead ends: 333 [2022-11-19 07:07:58,643 INFO L226 Difference]: Without dead ends: 333 [2022-11-19 07:07:58,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:07:58,644 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 231 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:58,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 995 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:07:58,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-11-19 07:07:58,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 236. [2022-11-19 07:07:58,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 161 states have (on average 1.6956521739130435) internal successors, (273), 235 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:58,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 273 transitions. [2022-11-19 07:07:58,651 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 273 transitions. Word has length 21 [2022-11-19 07:07:58,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:58,651 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 273 transitions. [2022-11-19 07:07:58,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:58,652 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 273 transitions. [2022-11-19 07:07:58,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-19 07:07:58,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:58,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:58,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-19 07:07:58,653 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr151ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:07:58,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:58,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1038856689, now seen corresponding path program 1 times [2022-11-19 07:07:58,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:58,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490423433] [2022-11-19 07:07:58,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:58,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:58,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:07:58,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:58,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490423433] [2022-11-19 07:07:58,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490423433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:58,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:58,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:07:58,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482338739] [2022-11-19 07:07:58,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:58,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:07:58,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:58,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:07:58,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:07:58,765 INFO L87 Difference]: Start difference. First operand 236 states and 273 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:59,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:59,113 INFO L93 Difference]: Finished difference Result 243 states and 273 transitions. [2022-11-19 07:07:59,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:07:59,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-19 07:07:59,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:59,115 INFO L225 Difference]: With dead ends: 243 [2022-11-19 07:07:59,115 INFO L226 Difference]: Without dead ends: 241 [2022-11-19 07:07:59,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:07:59,116 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 24 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:59,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 461 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:07:59,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-19 07:07:59,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 235. [2022-11-19 07:07:59,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 160 states have (on average 1.69375) internal successors, (271), 234 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:59,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 271 transitions. [2022-11-19 07:07:59,125 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 271 transitions. Word has length 22 [2022-11-19 07:07:59,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:59,126 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 271 transitions. [2022-11-19 07:07:59,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:59,126 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 271 transitions. [2022-11-19 07:07:59,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-19 07:07:59,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:59,127 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:59,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-19 07:07:59,128 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:07:59,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:59,129 INFO L85 PathProgramCache]: Analyzing trace with hash 41868091, now seen corresponding path program 1 times [2022-11-19 07:07:59,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:59,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495406951] [2022-11-19 07:07:59,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:59,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:59,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:59,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:07:59,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:59,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495406951] [2022-11-19 07:07:59,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495406951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:59,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:59,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:07:59,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80483849] [2022-11-19 07:07:59,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:59,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:07:59,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:59,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:07:59,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:07:59,315 INFO L87 Difference]: Start difference. First operand 235 states and 271 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:59,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:59,659 INFO L93 Difference]: Finished difference Result 249 states and 288 transitions. [2022-11-19 07:07:59,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:07:59,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-19 07:07:59,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:59,660 INFO L225 Difference]: With dead ends: 249 [2022-11-19 07:07:59,660 INFO L226 Difference]: Without dead ends: 249 [2022-11-19 07:07:59,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:07:59,661 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 48 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:59,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 484 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:07:59,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-11-19 07:07:59,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 234. [2022-11-19 07:07:59,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 160 states have (on average 1.6875) internal successors, (270), 233 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:59,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 270 transitions. [2022-11-19 07:07:59,669 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 270 transitions. Word has length 23 [2022-11-19 07:07:59,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:59,670 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 270 transitions. [2022-11-19 07:07:59,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:07:59,670 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 270 transitions. [2022-11-19 07:07:59,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-19 07:07:59,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:59,671 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:59,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-19 07:07:59,671 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:07:59,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:59,672 INFO L85 PathProgramCache]: Analyzing trace with hash 41868092, now seen corresponding path program 1 times [2022-11-19 07:07:59,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:59,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408383393] [2022-11-19 07:07:59,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:59,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:00,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:08:00,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:00,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408383393] [2022-11-19 07:08:00,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408383393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:00,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:08:00,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:08:00,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443335543] [2022-11-19 07:08:00,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:00,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 07:08:00,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:00,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 07:08:00,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:08:00,211 INFO L87 Difference]: Start difference. First operand 234 states and 270 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 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) [2022-11-19 07:08:01,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:01,269 INFO L93 Difference]: Finished difference Result 345 states and 400 transitions. [2022-11-19 07:08:01,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:08:01,270 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-19 07:08:01,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:01,272 INFO L225 Difference]: With dead ends: 345 [2022-11-19 07:08:01,272 INFO L226 Difference]: Without dead ends: 345 [2022-11-19 07:08:01,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-11-19 07:08:01,273 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 425 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:01,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 803 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-19 07:08:01,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-11-19 07:08:01,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 233. [2022-11-19 07:08:01,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 160 states have (on average 1.68125) internal successors, (269), 232 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:08:01,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 269 transitions. [2022-11-19 07:08:01,281 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 269 transitions. Word has length 23 [2022-11-19 07:08:01,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:01,281 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 269 transitions. [2022-11-19 07:08:01,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 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) [2022-11-19 07:08:01,281 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 269 transitions. [2022-11-19 07:08:01,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-19 07:08:01,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:01,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:08:01,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-19 07:08:01,283 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr123REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:08:01,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:01,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1764034550, now seen corresponding path program 1 times [2022-11-19 07:08:01,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:01,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286288354] [2022-11-19 07:08:01,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:01,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:01,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:08:01,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:01,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286288354] [2022-11-19 07:08:01,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286288354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:01,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:08:01,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:08:01,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862945067] [2022-11-19 07:08:01,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:01,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:08:01,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:01,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:08:01,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:08:01,328 INFO L87 Difference]: Start difference. First operand 233 states and 269 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:08:01,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:01,427 INFO L93 Difference]: Finished difference Result 220 states and 246 transitions. [2022-11-19 07:08:01,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:08:01,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-19 07:08:01,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:01,429 INFO L225 Difference]: With dead ends: 220 [2022-11-19 07:08:01,429 INFO L226 Difference]: Without dead ends: 203 [2022-11-19 07:08:01,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:08:01,430 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 26 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:01,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 334 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:08:01,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-19 07:08:01,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2022-11-19 07:08:01,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 130 states have (on average 1.7615384615384615) internal successors, (229), 202 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:08:01,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 229 transitions. [2022-11-19 07:08:01,436 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 229 transitions. Word has length 24 [2022-11-19 07:08:01,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:01,436 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 229 transitions. [2022-11-19 07:08:01,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:08:01,437 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 229 transitions. [2022-11-19 07:08:01,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-19 07:08:01,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:01,438 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:08:01,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-19 07:08:01,438 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:08:01,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:01,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1592358732, now seen corresponding path program 1 times [2022-11-19 07:08:01,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:01,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159378920] [2022-11-19 07:08:01,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:01,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:01,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:08:01,712 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:01,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159378920] [2022-11-19 07:08:01,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159378920] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:08:01,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794471801] [2022-11-19 07:08:01,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:01,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:01,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:08:01,715 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:08:01,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:08:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:01,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-19 07:08:01,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:08:01,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 07:08:02,015 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-19 07:08:02,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-19 07:08:02,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-19 07:08:02,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:08:02,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:08:02,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794471801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:02,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:08:02,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 14 [2022-11-19 07:08:02,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186749762] [2022-11-19 07:08:02,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:02,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:08:02,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:02,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:08:02,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-19 07:08:02,199 INFO L87 Difference]: Start difference. First operand 203 states and 229 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:08:02,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:02,828 INFO L93 Difference]: Finished difference Result 334 states and 375 transitions. [2022-11-19 07:08:02,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:08:02,828 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 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 [2022-11-19 07:08:02,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:02,830 INFO L225 Difference]: With dead ends: 334 [2022-11-19 07:08:02,830 INFO L226 Difference]: Without dead ends: 334 [2022-11-19 07:08:02,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-11-19 07:08:02,831 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 485 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:02,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 424 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:08:02,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-11-19 07:08:02,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 206. [2022-11-19 07:08:02,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 135 states have (on average 1.7481481481481482) internal successors, (236), 205 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:08:02,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 236 transitions. [2022-11-19 07:08:02,837 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 236 transitions. Word has length 25 [2022-11-19 07:08:02,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:02,837 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 236 transitions. [2022-11-19 07:08:02,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:08:02,837 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 236 transitions. [2022-11-19 07:08:02,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-19 07:08:02,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:02,838 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:08:02,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 07:08:03,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:03,045 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:08:03,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:03,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1592358733, now seen corresponding path program 1 times [2022-11-19 07:08:03,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:03,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476352999] [2022-11-19 07:08:03,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:03,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:03,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:08:03,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:03,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476352999] [2022-11-19 07:08:03,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476352999] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:08:03,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053176843] [2022-11-19 07:08:03,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:03,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:03,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:08:03,352 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:08:03,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:08:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:03,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 07:08:03,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:08:03,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-19 07:08:03,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-19 07:08:03,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-19 07:08:03,693 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-19 07:08:03,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-19 07:08:03,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:08:03,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:08:03,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053176843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:03,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:08:03,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 8 [2022-11-19 07:08:03,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488822572] [2022-11-19 07:08:03,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:03,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:08:03,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:03,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:08:03,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:08:03,708 INFO L87 Difference]: Start difference. First operand 206 states and 236 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:08:04,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:04,047 INFO L93 Difference]: Finished difference Result 227 states and 260 transitions. [2022-11-19 07:08:04,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:08:04,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-19 07:08:04,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:04,049 INFO L225 Difference]: With dead ends: 227 [2022-11-19 07:08:04,049 INFO L226 Difference]: Without dead ends: 227 [2022-11-19 07:08:04,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:08:04,050 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 454 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:04,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 187 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:08:04,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-19 07:08:04,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 207. [2022-11-19 07:08:04,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 136 states have (on average 1.7426470588235294) internal successors, (237), 206 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:08:04,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 237 transitions. [2022-11-19 07:08:04,055 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 237 transitions. Word has length 25 [2022-11-19 07:08:04,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:04,055 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 237 transitions. [2022-11-19 07:08:04,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:08:04,055 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 237 transitions. [2022-11-19 07:08:04,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-19 07:08:04,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:04,059 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:08:04,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:08:04,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-19 07:08:04,266 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:08:04,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:04,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1726985257, now seen corresponding path program 1 times [2022-11-19 07:08:04,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:04,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460809094] [2022-11-19 07:08:04,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:04,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:05,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:08:05,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:05,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460809094] [2022-11-19 07:08:05,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460809094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:05,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:08:05,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-19 07:08:05,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545135415] [2022-11-19 07:08:05,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:05,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-19 07:08:05,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:05,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-19 07:08:05,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:08:05,475 INFO L87 Difference]: Start difference. First operand 207 states and 237 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:08:07,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:07,074 INFO L93 Difference]: Finished difference Result 208 states and 237 transitions. [2022-11-19 07:08:07,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-19 07:08:07,075 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-19 07:08:07,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:07,076 INFO L225 Difference]: With dead ends: 208 [2022-11-19 07:08:07,076 INFO L226 Difference]: Without dead ends: 208 [2022-11-19 07:08:07,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2022-11-19 07:08:07,077 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 294 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:07,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 1145 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-19 07:08:07,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-19 07:08:07,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 207. [2022-11-19 07:08:07,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 136 states have (on average 1.7352941176470589) internal successors, (236), 206 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:08:07,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 236 transitions. [2022-11-19 07:08:07,090 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 236 transitions. Word has length 26 [2022-11-19 07:08:07,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:07,091 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 236 transitions. [2022-11-19 07:08:07,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:08:07,091 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 236 transitions. [2022-11-19 07:08:07,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:08:07,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:07,092 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:08:07,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-19 07:08:07,092 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:08:07,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:07,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1527445437, now seen corresponding path program 1 times [2022-11-19 07:08:07,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:07,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975565151] [2022-11-19 07:08:07,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:07,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:08,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:08:08,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:08,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975565151] [2022-11-19 07:08:08,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975565151] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:08:08,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500367165] [2022-11-19 07:08:08,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:08,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:08,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:08:08,095 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:08:08,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:08:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:08,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-19 07:08:08,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:08:08,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 07:08:08,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:08:08,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:08:08,496 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-19 07:08:08,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-19 07:08:08,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-19 07:08:08,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 07:08:08,632 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-11-19 07:08:08,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 41 [2022-11-19 07:08:08,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-19 07:08:08,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-19 07:08:08,765 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-11-19 07:08:08,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 41 [2022-11-19 07:08:08,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:08,942 INFO L321 Elim1Store]: treesize reduction 31, result has 8.8 percent of original size [2022-11-19 07:08:08,943 INFO L350 Elim1Store]: Elim1 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 37 [2022-11-19 07:08:08,965 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-19 07:08:08,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2022-11-19 07:08:08,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:08:08,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:08:09,972 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:10,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:08:10,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500367165] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:08:10,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1344840440] [2022-11-19 07:08:10,095 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-19 07:08:10,096 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:08:10,101 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:08:10,107 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:08:10,107 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:08:10,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-19 07:08:10,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:08:10,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-19 07:08:10,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:08:10,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-19 07:08:10,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-19 07:08:10,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,319 INFO L350 Elim1Store]: Elim1 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 29 treesize of output 35 [2022-11-19 07:08:10,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-19 07:08:10,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 07:08:10,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-19 07:08:10,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 07:08:10,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 07:08:10,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 07:08:10,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 36 [2022-11-19 07:08:10,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 56 [2022-11-19 07:08:10,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,614 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:10,615 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:10,646 INFO L321 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2022-11-19 07:08:10,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 180 treesize of output 144 [2022-11-19 07:08:10,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 44 [2022-11-19 07:08:10,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 99 [2022-11-19 07:08:10,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,767 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:10,789 INFO L321 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2022-11-19 07:08:10,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 175 treesize of output 131 [2022-11-19 07:08:10,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 55 [2022-11-19 07:08:10,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2022-11-19 07:08:10,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2022-11-19 07:08:10,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,942 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:10,966 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-19 07:08:10,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 171 treesize of output 138 [2022-11-19 07:08:10,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:10,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-11-19 07:08:11,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:11,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:11,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:11,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:11,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:11,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:11,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 55 [2022-11-19 07:08:11,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:11,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:11,174 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:11,175 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:11,242 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-19 07:08:11,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 483 treesize of output 492 [2022-11-19 07:08:11,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:11,269 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:11,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:11,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:11,274 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:11,330 INFO L321 Elim1Store]: treesize reduction 78, result has 26.4 percent of original size [2022-11-19 07:08:11,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 506 treesize of output 466 [2022-11-19 07:08:11,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:11,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:11,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:11,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:11,387 INFO L321 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-11-19 07:08:11,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 611 treesize of output 570 [2022-11-19 07:08:11,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:11,988 INFO L321 Elim1Store]: treesize reduction 296, result has 15.9 percent of original size [2022-11-19 07:08:11,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 1246 treesize of output 1227 [2022-11-19 07:08:13,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,086 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:13,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,089 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:13,092 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:13,212 INFO L321 Elim1Store]: treesize reduction 200, result has 17.0 percent of original size [2022-11-19 07:08:13,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 3094 treesize of output 1883 [2022-11-19 07:08:13,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,317 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:13,319 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:13,322 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:13,465 INFO L321 Elim1Store]: treesize reduction 298, result has 17.9 percent of original size [2022-11-19 07:08:13,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 3084 treesize of output 2745 [2022-11-19 07:08:13,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:13,587 INFO L321 Elim1Store]: treesize reduction 147, result has 9.3 percent of original size [2022-11-19 07:08:13,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3044 treesize of output 2703 [2022-11-19 07:08:15,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:15,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:15,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:15,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:15,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:15,637 INFO L321 Elim1Store]: treesize reduction 242, result has 10.4 percent of original size [2022-11-19 07:08:15,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 23 case distinctions, treesize of input 5824 treesize of output 3473 [2022-11-19 07:08:15,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:15,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:15,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:15,744 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:15,745 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:15,851 INFO L321 Elim1Store]: treesize reduction 330, result has 8.8 percent of original size [2022-11-19 07:08:15,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 5842 treesize of output 5151 [2022-11-19 07:08:15,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:16,271 INFO L321 Elim1Store]: treesize reduction 410, result has 13.7 percent of original size [2022-11-19 07:08:16,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 26 case distinctions, treesize of input 5825 treesize of output 5553 [2022-11-19 07:08:16,567 INFO L321 Elim1Store]: treesize reduction 184, result has 22.7 percent of original size [2022-11-19 07:08:16,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 5763 treesize of output 5115 [2022-11-19 07:08:20,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:20,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:20,152 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:20,154 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:20,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:20,339 INFO L321 Elim1Store]: treesize reduction 230, result has 10.9 percent of original size [2022-11-19 07:08:20,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 23 case distinctions, treesize of input 12602 treesize of output 7452 [2022-11-19 07:08:20,675 INFO L321 Elim1Store]: treesize reduction 262, result has 18.9 percent of original size [2022-11-19 07:08:20,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 12613 treesize of output 11417 [2022-11-19 07:08:20,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:20,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:20,823 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:20,825 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:20,826 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:20,937 INFO L321 Elim1Store]: treesize reduction 318, result has 9.1 percent of original size [2022-11-19 07:08:20,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 12340 treesize of output 10916 [2022-11-19 07:08:23,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:08:23,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:08:23,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:08:23,599 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 07:08:23,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-19 07:08:23,624 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:08:23,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-19 07:08:23,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:08:23,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:08:23,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 07:08:23,718 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-19 07:08:23,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2022-11-19 07:08:23,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:08:23,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:23,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-19 07:08:23,784 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-19 07:08:23,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-19 07:08:23,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:23,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2022-11-19 07:08:23,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 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 [2022-11-19 07:08:23,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2022-11-19 07:08:23,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-19 07:08:23,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:08:23,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:08:23,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:08:23,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 07:08:23,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 07:08:23,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:08:23,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:08:23,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 07:08:23,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:23,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:23,998 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:24,002 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:08:24,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2022-11-19 07:08:24,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:24,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:24,015 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:24,020 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:08:24,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2022-11-19 07:08:24,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:08:24,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:08:24,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:24,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:24,135 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:24,175 INFO L321 Elim1Store]: treesize reduction 62, result has 26.2 percent of original size [2022-11-19 07:08:24,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 70 [2022-11-19 07:08:24,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:24,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:24,200 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:24,231 INFO L321 Elim1Store]: treesize reduction 62, result has 26.2 percent of original size [2022-11-19 07:08:24,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 70 [2022-11-19 07:08:24,319 INFO L321 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2022-11-19 07:08:24,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 37 [2022-11-19 07:08:24,362 INFO L321 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2022-11-19 07:08:24,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 37 [2022-11-19 07:08:24,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 07:08:24,601 INFO L321 Elim1Store]: treesize reduction 46, result has 37.8 percent of original size [2022-11-19 07:08:24,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 109 treesize of output 129 [2022-11-19 07:08:24,665 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:08:24,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-19 07:08:24,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:08:24,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:08:24,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:08:24,788 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:08:24,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-19 07:08:24,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-19 07:08:24,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:08:24,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-19 07:08:24,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:08:24,827 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:08:27,772 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16249#(and (= (select |#valid| |ULTIMATE.start_main_~#iter~0#1.base|) 1) (<= 0 |#NULL.base|) (= |ULTIMATE.start_main_#t~mem13#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (<= |ULTIMATE.start_main_~#iter~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#iter~0#1.base|) (<= (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#iter~0#1.base|)) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_#t~mem13#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (<= 0 |ULTIMATE.start_main_~#iter~0#1.offset|) (<= 0 |ULTIMATE.start_main_~list~0#1.offset|) (not (= 1 (select |#valid| |ULTIMATE.start_main_#t~mem13#1.base|))) (<= 0 |ULTIMATE.start_main_~data~0#1.offset|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~list~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~data~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~current~0#1.offset| 4)))' at error location [2022-11-19 07:08:27,772 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:08:27,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:08:27,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 9] total 19 [2022-11-19 07:08:27,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693888419] [2022-11-19 07:08:27,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:08:27,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-19 07:08:27,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:27,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-19 07:08:27,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1487, Unknown=0, NotChecked=0, Total=1640 [2022-11-19 07:08:27,775 INFO L87 Difference]: Start difference. First operand 207 states and 236 transitions. Second operand has 20 states, 20 states have (on average 2.85) internal successors, (57), 19 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) [2022-11-19 07:08:28,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:28,381 INFO L93 Difference]: Finished difference Result 229 states and 259 transitions. [2022-11-19 07:08:28,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 07:08:28,382 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 19 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 27 [2022-11-19 07:08:28,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:28,383 INFO L225 Difference]: With dead ends: 229 [2022-11-19 07:08:28,383 INFO L226 Difference]: Without dead ends: 229 [2022-11-19 07:08:28,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=170, Invalid=1636, Unknown=0, NotChecked=0, Total=1806 [2022-11-19 07:08:28,384 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 13 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 377 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:28,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1475 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 551 Invalid, 0 Unknown, 377 Unchecked, 0.5s Time] [2022-11-19 07:08:28,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-11-19 07:08:28,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2022-11-19 07:08:28,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 158 states have (on average 1.639240506329114) internal successors, (259), 228 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:08:28,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 259 transitions. [2022-11-19 07:08:28,390 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 259 transitions. Word has length 27 [2022-11-19 07:08:28,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:28,390 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 259 transitions. [2022-11-19 07:08:28,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 19 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) [2022-11-19 07:08:28,391 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 259 transitions. [2022-11-19 07:08:28,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-19 07:08:28,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:28,391 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:08:28,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:08:28,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-19 07:08:28,600 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:08:28,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:28,600 INFO L85 PathProgramCache]: Analyzing trace with hash 688966908, now seen corresponding path program 1 times [2022-11-19 07:08:28,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:28,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256774182] [2022-11-19 07:08:28,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:28,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:28,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:08:28,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:28,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256774182] [2022-11-19 07:08:28,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256774182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:28,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:08:28,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:08:28,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039527599] [2022-11-19 07:08:28,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:28,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:08:28,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:28,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:08:28,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:08:28,806 INFO L87 Difference]: Start difference. First operand 229 states and 259 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:08:29,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:29,084 INFO L93 Difference]: Finished difference Result 234 states and 264 transitions. [2022-11-19 07:08:29,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:08:29,087 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-19 07:08:29,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:29,088 INFO L225 Difference]: With dead ends: 234 [2022-11-19 07:08:29,088 INFO L226 Difference]: Without dead ends: 234 [2022-11-19 07:08:29,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:08:29,089 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 2 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:29,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 604 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:08:29,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-11-19 07:08:29,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 233. [2022-11-19 07:08:29,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 162 states have (on average 1.623456790123457) internal successors, (263), 232 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:08:29,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 263 transitions. [2022-11-19 07:08:29,094 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 263 transitions. Word has length 31 [2022-11-19 07:08:29,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:29,094 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 263 transitions. [2022-11-19 07:08:29,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:08:29,095 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 263 transitions. [2022-11-19 07:08:29,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-19 07:08:29,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:29,095 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:08:29,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-19 07:08:29,096 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:08:29,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:29,096 INFO L85 PathProgramCache]: Analyzing trace with hash 373171140, now seen corresponding path program 2 times [2022-11-19 07:08:29,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:29,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71692923] [2022-11-19 07:08:29,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:29,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:30,759 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:08:30,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:30,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71692923] [2022-11-19 07:08:30,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71692923] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:08:30,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364289644] [2022-11-19 07:08:30,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:08:30,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:30,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:08:30,762 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:08:30,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:08:31,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 07:08:31,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:08:31,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-19 07:08:31,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:08:31,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 07:08:31,084 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:08:31,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-19 07:08:31,109 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 07:08:31,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-19 07:08:31,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:08:31,291 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-19 07:08:31,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26 [2022-11-19 07:08:31,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:08:31,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:31,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2022-11-19 07:08:31,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:31,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-19 07:08:31,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:31,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:31,583 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:08:31,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 42 [2022-11-19 07:08:31,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:31,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-19 07:08:31,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:31,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:31,729 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:08:31,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 42 [2022-11-19 07:08:31,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-19 07:08:31,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:31,956 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:31,959 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-19 07:08:31,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 42 [2022-11-19 07:08:32,106 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:32,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:32,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 12 [2022-11-19 07:08:32,179 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:08:32,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:08:32,766 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:32,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 78 [2022-11-19 07:08:36,109 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:08:36,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364289644] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:08:36,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1174302224] [2022-11-19 07:08:36,113 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-19 07:08:36,113 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:08:36,114 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:08:36,114 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:08:36,115 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:08:36,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-19 07:08:36,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-19 07:08:36,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:08:36,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:08:36,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,215 INFO L350 Elim1Store]: Elim1 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 29 treesize of output 35 [2022-11-19 07:08:36,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-19 07:08:36,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-19 07:08:36,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-19 07:08:36,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 07:08:36,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 07:08:36,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-19 07:08:36,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 07:08:36,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 07:08:36,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 36 [2022-11-19 07:08:36,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 47 [2022-11-19 07:08:36,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,498 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:36,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:36,532 INFO L321 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-11-19 07:08:36,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 145 treesize of output 113 [2022-11-19 07:08:36,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 07:08:36,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 40 [2022-11-19 07:08:36,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,639 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:36,662 INFO L321 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2022-11-19 07:08:36,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 175 treesize of output 131 [2022-11-19 07:08:36,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2022-11-19 07:08:36,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2022-11-19 07:08:36,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 55 [2022-11-19 07:08:36,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,810 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:36,833 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-19 07:08:36,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 171 treesize of output 138 [2022-11-19 07:08:36,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-11-19 07:08:36,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 55 [2022-11-19 07:08:36,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,987 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:36,988 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:36,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:36,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:37,054 INFO L321 Elim1Store]: treesize reduction 78, result has 26.4 percent of original size [2022-11-19 07:08:37,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 490 treesize of output 454 [2022-11-19 07:08:37,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:37,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:37,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:37,081 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:37,089 INFO L321 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-11-19 07:08:37,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 620 treesize of output 579 [2022-11-19 07:08:37,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:37,109 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:37,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:37,112 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:37,166 INFO L321 Elim1Store]: treesize reduction 154, result has 26.0 percent of original size [2022-11-19 07:08:37,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 614 treesize of output 629 [2022-11-19 07:08:37,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:37,770 INFO L321 Elim1Store]: treesize reduction 296, result has 15.9 percent of original size [2022-11-19 07:08:37,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 1260 treesize of output 1237 [2022-11-19 07:08:38,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:38,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:38,340 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:38,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:38,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:38,425 INFO L321 Elim1Store]: treesize reduction 118, result has 22.9 percent of original size [2022-11-19 07:08:38,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 1480 treesize of output 905 [2022-11-19 07:08:38,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:38,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:38,491 INFO L321 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-11-19 07:08:38,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 1472 treesize of output 1343 [2022-11-19 07:08:38,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:38,531 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:38,532 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:38,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:38,655 INFO L321 Elim1Store]: treesize reduction 234, result has 21.7 percent of original size [2022-11-19 07:08:38,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 1484 treesize of output 1426 [2022-11-19 07:08:39,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:39,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:39,184 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:39,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:39,186 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:39,374 INFO L321 Elim1Store]: treesize reduction 128, result has 10.5 percent of original size [2022-11-19 07:08:39,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 22 case distinctions, treesize of input 1518 treesize of output 911 [2022-11-19 07:08:39,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:39,691 INFO L321 Elim1Store]: treesize reduction 410, result has 13.7 percent of original size [2022-11-19 07:08:39,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 26 case distinctions, treesize of input 1519 treesize of output 1493 [2022-11-19 07:08:39,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:39,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:39,758 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:39,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:39,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:39,835 INFO L321 Elim1Store]: treesize reduction 232, result has 8.3 percent of original size [2022-11-19 07:08:39,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 1512 treesize of output 1432 [2022-11-19 07:08:39,980 INFO L321 Elim1Store]: treesize reduction 128, result has 28.1 percent of original size [2022-11-19 07:08:39,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 1481 treesize of output 1381 [2022-11-19 07:08:40,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:40,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:40,789 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:40,790 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:40,791 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:40,914 INFO L321 Elim1Store]: treesize reduction 120, result has 11.1 percent of original size [2022-11-19 07:08:40,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 22 case distinctions, treesize of input 3098 treesize of output 1862 [2022-11-19 07:08:41,136 INFO L321 Elim1Store]: treesize reduction 198, result has 22.4 percent of original size [2022-11-19 07:08:41,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 3109 treesize of output 2901 [2022-11-19 07:08:41,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:41,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:41,218 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:41,219 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:41,220 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:41,291 INFO L321 Elim1Store]: treesize reduction 224, result has 8.6 percent of original size [2022-11-19 07:08:41,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 3060 treesize of output 2879 [2022-11-19 07:08:41,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:08:42,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:08:42,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:08:42,030 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 07:08:42,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-19 07:08:42,052 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:08:42,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-19 07:08:42,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:08:42,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:08:42,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 07:08:42,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-19 07:08:42,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:08:42,152 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-19 07:08:42,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-19 07:08:42,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2022-11-19 07:08:42,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 27 [2022-11-19 07:08:42,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 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 [2022-11-19 07:08:42,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-19 07:08:42,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2022-11-19 07:08:42,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:08:42,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:08:42,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:08:42,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 07:08:42,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 07:08:42,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 07:08:42,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:08:42,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:08:42,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:42,365 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:08:42,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2022-11-19 07:08:42,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:42,385 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:08:42,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2022-11-19 07:08:42,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:08:42,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:08:42,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:42,502 INFO L321 Elim1Store]: treesize reduction 62, result has 26.2 percent of original size [2022-11-19 07:08:42,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 70 [2022-11-19 07:08:42,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:42,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:42,552 INFO L321 Elim1Store]: treesize reduction 62, result has 26.2 percent of original size [2022-11-19 07:08:42,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 66 [2022-11-19 07:08:42,632 INFO L321 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2022-11-19 07:08:42,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 37 [2022-11-19 07:08:42,680 INFO L321 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2022-11-19 07:08:42,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 37 [2022-11-19 07:08:42,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 07:08:42,952 INFO L321 Elim1Store]: treesize reduction 46, result has 37.8 percent of original size [2022-11-19 07:08:42,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 109 treesize of output 129 [2022-11-19 07:08:43,060 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:08:43,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-19 07:08:43,086 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-19 07:08:43,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2022-11-19 07:08:43,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:08:43,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:08:43,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:08:43,203 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:08:43,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-19 07:08:43,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:08:43,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:08:43,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:43,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-19 07:08:43,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:43,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-19 07:08:43,239 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:08:48,474 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17436#(and (= (select |#valid| |ULTIMATE.start_main_~#iter~0#1.base|) 1) (or (exists ((|v_ULTIMATE.start_main_#t~mem11#1.base_15| Int)) (and (= (select |#valid| |v_ULTIMATE.start_main_#t~mem11#1.base_15|) 1) (not (= |ULTIMATE.start_main_~#iter~0#1.base| |v_ULTIMATE.start_main_#t~mem11#1.base_15|)) (exists ((|v_ULTIMATE.start_main_#t~mem11#1.offset_14| Int)) (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_#t~mem11#1.base_15|) (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_14| 4))) (<= 0 (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_14| 4)) (<= (+ 8 |v_ULTIMATE.start_main_#t~mem11#1.offset_14|) (select |#length| |v_ULTIMATE.start_main_#t~mem11#1.base_15|)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_#t~mem11#1.base_15|) (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_14| 4)) (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)))))) (exists ((|v_ULTIMATE.start_main_#t~mem11#1.base_15| Int)) (and (= (select |#valid| |v_ULTIMATE.start_main_#t~mem11#1.base_15|) 1) (exists ((|v_ULTIMATE.start_main_#t~mem11#1.offset_14| Int)) (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_#t~mem11#1.base_15|) (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_14| 4))) (<= 0 (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_14| 4)) (<= (+ 8 |v_ULTIMATE.start_main_#t~mem11#1.offset_14|) (select |#length| |v_ULTIMATE.start_main_#t~mem11#1.base_15|)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_#t~mem11#1.base_15|) (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_14| 4)) (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (not (= |ULTIMATE.start_main_~#iter~0#1.offset| (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_14| 4)))))))) (<= 0 |#NULL.base|) (= |ULTIMATE.start_main_#t~mem13#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (<= |ULTIMATE.start_main_~#iter~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#iter~0#1.base|) (<= (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#iter~0#1.base|)) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_#t~mem13#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (<= 0 |ULTIMATE.start_main_~#iter~0#1.offset|) (<= 0 |ULTIMATE.start_main_~list~0#1.offset|) (not (= 1 (select |#valid| |ULTIMATE.start_main_#t~mem13#1.base|))) (<= 0 |ULTIMATE.start_main_~data~0#1.offset|) (<= |#NULL.base| 0) (or (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) 0)) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) 0))) (<= |ULTIMATE.start_main_~list~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~data~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~current~0#1.offset| 4)))' at error location [2022-11-19 07:08:48,474 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:08:48,474 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:08:48,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12, 14] total 37 [2022-11-19 07:08:48,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631619004] [2022-11-19 07:08:48,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:08:48,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-19 07:08:48,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:48,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-19 07:08:48,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=3295, Unknown=0, NotChecked=0, Total=3540 [2022-11-19 07:08:48,477 INFO L87 Difference]: Start difference. First operand 233 states and 263 transitions. Second operand has 38 states, 37 states have (on average 2.324324324324324) internal successors, (86), 38 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:08:51,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:51,776 INFO L93 Difference]: Finished difference Result 410 states and 459 transitions. [2022-11-19 07:08:51,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-19 07:08:51,777 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.324324324324324) internal successors, (86), 38 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-19 07:08:51,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:51,779 INFO L225 Difference]: With dead ends: 410 [2022-11-19 07:08:51,780 INFO L226 Difference]: Without dead ends: 410 [2022-11-19 07:08:51,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=512, Invalid=4600, Unknown=0, NotChecked=0, Total=5112 [2022-11-19 07:08:51,782 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 439 mSDsluCounter, 2617 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 4312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1800 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:51,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 2776 Invalid, 4312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 2462 Invalid, 0 Unknown, 1800 Unchecked, 2.0s Time] [2022-11-19 07:08:51,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-11-19 07:08:51,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 232. [2022-11-19 07:08:51,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 162 states have (on average 1.617283950617284) internal successors, (262), 231 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:08:51,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 262 transitions. [2022-11-19 07:08:51,791 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 262 transitions. Word has length 33 [2022-11-19 07:08:51,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:51,791 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 262 transitions. [2022-11-19 07:08:51,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.324324324324324) internal successors, (86), 38 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:08:51,792 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 262 transitions. [2022-11-19 07:08:51,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-19 07:08:51,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:51,793 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:08:51,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:08:52,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:52,002 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:08:52,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:52,002 INFO L85 PathProgramCache]: Analyzing trace with hash 373171141, now seen corresponding path program 1 times [2022-11-19 07:08:52,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:52,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802348302] [2022-11-19 07:08:52,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:52,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:54,287 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:08:54,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:54,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802348302] [2022-11-19 07:08:54,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802348302] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:08:54,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861440285] [2022-11-19 07:08:54,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:54,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:54,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:08:54,290 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:08:54,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:08:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:54,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-19 07:08:54,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:08:54,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 07:08:54,678 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:08:54,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-19 07:08:54,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:08:54,723 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-19 07:08:54,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-19 07:08:54,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:08:54,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:08:54,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:08:54,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:54,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-19 07:08:55,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:55,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 35 [2022-11-19 07:08:55,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:55,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 37 [2022-11-19 07:08:55,162 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-11-19 07:08:55,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 59 [2022-11-19 07:08:55,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:55,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 49 [2022-11-19 07:08:55,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:55,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 49 [2022-11-19 07:08:55,343 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-11-19 07:08:55,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 59 [2022-11-19 07:08:55,623 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:55,649 INFO L321 Elim1Store]: treesize reduction 103, result has 14.2 percent of original size [2022-11-19 07:08:55,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 123 treesize of output 80 [2022-11-19 07:08:55,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:55,659 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:08:55,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 80 [2022-11-19 07:08:55,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:55,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 27 [2022-11-19 07:08:55,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:55,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 37 treesize of output 17 [2022-11-19 07:08:55,855 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:08:55,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:09:33,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:33,189 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:45,924 WARN L233 SmtUtils]: Spent 5.44s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:09:46,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1998 treesize of output 1964 [2022-11-19 07:09:47,564 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:09:47,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861440285] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:09:47,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1963265024] [2022-11-19 07:09:47,567 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-19 07:09:47,568 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:09:47,568 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:09:47,568 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:09:47,569 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:09:47,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-19 07:09:47,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:09:47,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-19 07:09:47,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:09:47,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-19 07:09:47,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,706 INFO L350 Elim1Store]: Elim1 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 29 treesize of output 35 [2022-11-19 07:09:47,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-19 07:09:47,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-19 07:09:47,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 07:09:47,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-19 07:09:47,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 07:09:47,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 07:09:47,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 07:09:47,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 36 [2022-11-19 07:09:47,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 56 [2022-11-19 07:09:47,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:47,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:47,968 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:48,005 INFO L321 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2022-11-19 07:09:48,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 180 treesize of output 144 [2022-11-19 07:09:48,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 44 [2022-11-19 07:09:48,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 99 [2022-11-19 07:09:48,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,133 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:48,133 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:48,158 INFO L321 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2022-11-19 07:09:48,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 212 treesize of output 164 [2022-11-19 07:09:48,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2022-11-19 07:09:48,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 102 [2022-11-19 07:09:48,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 60 [2022-11-19 07:09:48,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,338 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:48,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:48,368 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-19 07:09:48,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 173 treesize of output 140 [2022-11-19 07:09:48,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2022-11-19 07:09:48,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 55 [2022-11-19 07:09:48,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,544 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:48,545 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:48,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,548 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:48,549 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:48,634 INFO L321 Elim1Store]: treesize reduction 80, result has 27.3 percent of original size [2022-11-19 07:09:48,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 487 treesize of output 451 [2022-11-19 07:09:48,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,665 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:48,674 INFO L321 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-11-19 07:09:48,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 617 treesize of output 576 [2022-11-19 07:09:48,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:48,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:48,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:48,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:48,705 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:48,783 INFO L321 Elim1Store]: treesize reduction 156, result has 26.4 percent of original size [2022-11-19 07:09:48,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 611 treesize of output 626 [2022-11-19 07:09:49,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:49,388 INFO L321 Elim1Store]: treesize reduction 338, result has 16.7 percent of original size [2022-11-19 07:09:49,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 1434 treesize of output 1415 [2022-11-19 07:09:50,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:50,116 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:50,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:50,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:50,120 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:50,121 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:50,247 INFO L321 Elim1Store]: treesize reduction 126, result has 25.4 percent of original size [2022-11-19 07:09:50,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 3268 treesize of output 1791 [2022-11-19 07:09:50,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:50,319 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:50,320 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:50,471 INFO L321 Elim1Store]: treesize reduction 346, result has 14.4 percent of original size [2022-11-19 07:09:50,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 19 case distinctions, treesize of input 3289 treesize of output 2720 [2022-11-19 07:09:50,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:50,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:50,551 INFO L321 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2022-11-19 07:09:50,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 3194 treesize of output 2871 [2022-11-19 07:09:51,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:51,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:51,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:51,223 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:51,224 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:51,225 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:51,226 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:51,227 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:51,450 INFO L321 Elim1Store]: treesize reduction 134, result has 13.5 percent of original size [2022-11-19 07:09:51,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 22 case distinctions, treesize of input 3252 treesize of output 1783 [2022-11-19 07:09:51,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:51,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:51,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:51,515 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:51,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:51,793 INFO L321 Elim1Store]: treesize reduction 376, result has 8.3 percent of original size [2022-11-19 07:09:51,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 23 case distinctions, treesize of input 3270 treesize of output 2709 [2022-11-19 07:09:51,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:52,224 INFO L321 Elim1Store]: treesize reduction 458, result has 14.4 percent of original size [2022-11-19 07:09:52,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 26 case distinctions, treesize of input 3253 treesize of output 3163 [2022-11-19 07:09:52,490 INFO L321 Elim1Store]: treesize reduction 152, result has 29.0 percent of original size [2022-11-19 07:09:52,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 3203 treesize of output 2915 [2022-11-19 07:09:53,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:53,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:53,900 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:53,900 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:53,901 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:53,902 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:53,986 INFO L321 Elim1Store]: treesize reduction 126, result has 14.3 percent of original size [2022-11-19 07:09:53,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 22 case distinctions, treesize of input 6585 treesize of output 3569 [2022-11-19 07:09:54,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:54,091 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:54,092 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:54,093 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:54,235 INFO L321 Elim1Store]: treesize reduction 364, result has 8.5 percent of original size [2022-11-19 07:09:54,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 23 case distinctions, treesize of input 6603 treesize of output 5473 [2022-11-19 07:09:54,513 INFO L321 Elim1Store]: treesize reduction 228, result has 23.2 percent of original size [2022-11-19 07:09:54,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 6596 treesize of output 6128 [2022-11-19 07:09:55,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:09:55,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:09:55,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:09:55,731 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:09:55,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-19 07:09:55,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:09:55,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:09:55,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 07:09:55,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:09:55,819 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-19 07:09:55,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 33 [2022-11-19 07:09:55,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:55,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-11-19 07:09:55,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:09:55,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:55,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-19 07:09:55,908 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-19 07:09:55,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-19 07:09:55,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2022-11-19 07:09:55,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 07:09:55,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 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 [2022-11-19 07:09:55,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:09:55,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:09:55,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:09:56,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 07:09:56,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 07:09:56,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:09:56,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 07:09:56,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:09:56,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:56,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:56,121 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:56,125 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:09:56,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2022-11-19 07:09:56,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:09:56,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:56,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:56,151 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:56,155 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:09:56,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2022-11-19 07:09:56,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:09:56,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:56,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:56,233 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:56,273 INFO L321 Elim1Store]: treesize reduction 62, result has 26.2 percent of original size [2022-11-19 07:09:56,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 70 [2022-11-19 07:09:56,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:56,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:56,299 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:09:56,330 INFO L321 Elim1Store]: treesize reduction 62, result has 26.2 percent of original size [2022-11-19 07:09:56,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 66 [2022-11-19 07:09:56,416 INFO L321 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2022-11-19 07:09:56,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 37 [2022-11-19 07:09:56,467 INFO L321 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2022-11-19 07:09:56,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 37 [2022-11-19 07:09:56,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 07:09:56,693 INFO L321 Elim1Store]: treesize reduction 46, result has 37.8 percent of original size [2022-11-19 07:09:56,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 109 treesize of output 129 [2022-11-19 07:09:56,822 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:09:56,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-19 07:09:56,870 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:09:56,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-19 07:09:56,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:09:56,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:09:56,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:09:56,998 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:09:56,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-19 07:09:57,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:09:57,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:09:57,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:57,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-19 07:09:57,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:57,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-19 07:09:57,042 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:10:03,100 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18362#(and (= (select |#valid| |ULTIMATE.start_main_~#iter~0#1.base|) 1) (<= 0 |#NULL.base|) (= |ULTIMATE.start_main_#t~mem13#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (or (not (<= 0 |ULTIMATE.start_main_#t~mem13#1.offset|)) (not (<= (+ |ULTIMATE.start_main_#t~mem13#1.offset| 4) (select |#length| |ULTIMATE.start_main_#t~mem13#1.base|)))) (or (and (<= 0 (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) 4)) (exists ((|v_ULTIMATE.start_main_#t~mem11#1.base_18| Int)) (and (= (select |#valid| |v_ULTIMATE.start_main_#t~mem11#1.base_18|) 1) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_#t~mem11#1.base_18|) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) 4)) |v_ULTIMATE.start_main_#t~mem11#1.base_18|) (<= (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) 8) (select |#length| |v_ULTIMATE.start_main_#t~mem11#1.base_18|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_#t~mem11#1.base_18|) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) 4))) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_#t~mem11#1.base_18|) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) 4)))))) (exists ((|v_ULTIMATE.start_main_#t~mem11#1.offset_17| Int)) (and (<= 0 (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_17| 4)) (exists ((|v_ULTIMATE.start_main_#t~mem11#1.base_18| Int)) (and (= (select |#valid| |v_ULTIMATE.start_main_#t~mem11#1.base_18|) 1) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_#t~mem11#1.base_18|) (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_17| 4)) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_#t~mem11#1.base_18|) (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_17| 4)) (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (<= (+ 8 |v_ULTIMATE.start_main_#t~mem11#1.offset_17|) (select |#length| |v_ULTIMATE.start_main_#t~mem11#1.base_18|)))) (not (= |ULTIMATE.start_main_~#iter~0#1.offset| (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_17| 4))))) (exists ((|v_ULTIMATE.start_main_#t~mem11#1.offset_17| Int)) (and (<= 0 (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_17| 4)) (exists ((|v_ULTIMATE.start_main_#t~mem11#1.base_18| Int)) (and (= (select |#valid| |v_ULTIMATE.start_main_#t~mem11#1.base_18|) 1) (not (= |ULTIMATE.start_main_~#iter~0#1.base| |v_ULTIMATE.start_main_#t~mem11#1.base_18|)) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_#t~mem11#1.base_18|) (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_17| 4)) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_#t~mem11#1.base_18|) (+ |v_ULTIMATE.start_main_#t~mem11#1.offset_17| 4)) (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (<= (+ 8 |v_ULTIMATE.start_main_#t~mem11#1.offset_17|) (select |#length| |v_ULTIMATE.start_main_#t~mem11#1.base_18|))))))) (<= |ULTIMATE.start_main_~#iter~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#iter~0#1.base|) (<= (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#iter~0#1.base|)) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_#t~mem13#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (<= 0 |ULTIMATE.start_main_~#iter~0#1.offset|) (<= 0 |ULTIMATE.start_main_~list~0#1.offset|) (<= 0 |ULTIMATE.start_main_~data~0#1.offset|) (<= |#NULL.base| 0) (or (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) 0)) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|) 0))) (<= |ULTIMATE.start_main_~list~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~data~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~current~0#1.offset| 4)))' at error location [2022-11-19 07:10:03,100 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:10:03,100 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:10:03,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 13] total 40 [2022-11-19 07:10:03,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670599491] [2022-11-19 07:10:03,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:10:03,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-19 07:10:03,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:03,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-19 07:10:03,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=3664, Unknown=6, NotChecked=0, Total=3906 [2022-11-19 07:10:03,102 INFO L87 Difference]: Start difference. First operand 232 states and 262 transitions. Second operand has 41 states, 40 states have (on average 2.325) internal successors, (93), 41 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:07,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:07,930 INFO L93 Difference]: Finished difference Result 501 states and 576 transitions. [2022-11-19 07:10:07,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-19 07:10:07,931 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.325) internal successors, (93), 41 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-19 07:10:07,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:07,933 INFO L225 Difference]: With dead ends: 501 [2022-11-19 07:10:07,934 INFO L226 Difference]: Without dead ends: 501 [2022-11-19 07:10:07,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1699 ImplicationChecksByTransitivity, 59.3s TimeCoverageRelationStatistics Valid=539, Invalid=5775, Unknown=6, NotChecked=0, Total=6320 [2022-11-19 07:10:07,936 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 485 mSDsluCounter, 2427 mSDsCounter, 0 mSdLazyCounter, 2175 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 2572 SdHoareTripleChecker+Invalid, 3599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1392 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:07,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 2572 Invalid, 3599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2175 Invalid, 0 Unknown, 1392 Unchecked, 2.1s Time] [2022-11-19 07:10:07,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-11-19 07:10:07,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 231. [2022-11-19 07:10:07,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 162 states have (on average 1.6111111111111112) internal successors, (261), 230 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:07,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 261 transitions. [2022-11-19 07:10:07,943 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 261 transitions. Word has length 33 [2022-11-19 07:10:07,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:07,944 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 261 transitions. [2022-11-19 07:10:07,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.325) internal successors, (93), 41 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:07,944 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 261 transitions. [2022-11-19 07:10:07,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-19 07:10:07,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:07,945 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:07,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:10:08,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-19 07:10:08,152 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:10:08,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:08,152 INFO L85 PathProgramCache]: Analyzing trace with hash 671181745, now seen corresponding path program 1 times [2022-11-19 07:10:08,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:08,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299896117] [2022-11-19 07:10:08,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:08,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:08,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:10:08,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:08,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299896117] [2022-11-19 07:10:08,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299896117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:08,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:08,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:10:08,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718304596] [2022-11-19 07:10:08,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:08,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 07:10:08,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:08,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 07:10:08,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:10:08,599 INFO L87 Difference]: Start difference. First operand 231 states and 261 transitions. Second operand has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:09,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:09,406 INFO L93 Difference]: Finished difference Result 356 states and 407 transitions. [2022-11-19 07:10:09,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 07:10:09,407 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-19 07:10:09,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:09,416 INFO L225 Difference]: With dead ends: 356 [2022-11-19 07:10:09,416 INFO L226 Difference]: Without dead ends: 356 [2022-11-19 07:10:09,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:10:09,419 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 970 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:09,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 559 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:10:09,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-19 07:10:09,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 284. [2022-11-19 07:10:09,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 215 states have (on average 1.613953488372093) internal successors, (347), 283 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:09,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 347 transitions. [2022-11-19 07:10:09,428 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 347 transitions. Word has length 33 [2022-11-19 07:10:09,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:09,429 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 347 transitions. [2022-11-19 07:10:09,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:09,429 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 347 transitions. [2022-11-19 07:10:09,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-19 07:10:09,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:09,430 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:09,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-19 07:10:09,430 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:10:09,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:09,431 INFO L85 PathProgramCache]: Analyzing trace with hash 944318581, now seen corresponding path program 1 times [2022-11-19 07:10:09,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:09,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608517201] [2022-11-19 07:10:09,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:09,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:09,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:10:09,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:09,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608517201] [2022-11-19 07:10:09,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608517201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:09,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:09,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:10:09,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559878975] [2022-11-19 07:10:09,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:09,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:10:09,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:09,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:10:09,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:10:09,605 INFO L87 Difference]: Start difference. First operand 284 states and 347 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 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) [2022-11-19 07:10:10,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:10,112 INFO L93 Difference]: Finished difference Result 386 states and 435 transitions. [2022-11-19 07:10:10,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 07:10:10,113 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 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 37 [2022-11-19 07:10:10,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:10,114 INFO L225 Difference]: With dead ends: 386 [2022-11-19 07:10:10,114 INFO L226 Difference]: Without dead ends: 386 [2022-11-19 07:10:10,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2022-11-19 07:10:10,115 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 1163 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:10,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1163 Valid, 654 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:10:10,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-11-19 07:10:10,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 283. [2022-11-19 07:10:10,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 214 states have (on average 1.602803738317757) internal successors, (343), 282 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:10,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 343 transitions. [2022-11-19 07:10:10,123 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 343 transitions. Word has length 37 [2022-11-19 07:10:10,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:10,123 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 343 transitions. [2022-11-19 07:10:10,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 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) [2022-11-19 07:10:10,124 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 343 transitions. [2022-11-19 07:10:10,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-19 07:10:10,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:10,125 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:10,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-19 07:10:10,125 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:10:10,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:10,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1458941221, now seen corresponding path program 1 times [2022-11-19 07:10:10,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:10,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707823242] [2022-11-19 07:10:10,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:10,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:10,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:10:10,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:10,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707823242] [2022-11-19 07:10:10,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707823242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:10,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:10,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:10:10,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020359070] [2022-11-19 07:10:10,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:10,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:10:10,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:10,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:10:10,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:10:10,626 INFO L87 Difference]: Start difference. First operand 283 states and 343 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:11,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:11,852 INFO L93 Difference]: Finished difference Result 384 states and 431 transitions. [2022-11-19 07:10:11,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 07:10:11,853 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-11-19 07:10:11,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:11,856 INFO L225 Difference]: With dead ends: 384 [2022-11-19 07:10:11,856 INFO L226 Difference]: Without dead ends: 384 [2022-11-19 07:10:11,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-11-19 07:10:11,857 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 932 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:11,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 350 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-19 07:10:11,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-11-19 07:10:11,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 304. [2022-11-19 07:10:11,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 235 states have (on average 1.6680851063829787) internal successors, (392), 303 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:11,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 392 transitions. [2022-11-19 07:10:11,866 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 392 transitions. Word has length 38 [2022-11-19 07:10:11,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:11,866 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 392 transitions. [2022-11-19 07:10:11,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:11,866 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 392 transitions. [2022-11-19 07:10:11,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-19 07:10:11,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:11,867 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:11,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-19 07:10:11,868 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:10:11,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:11,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1457382676, now seen corresponding path program 1 times [2022-11-19 07:10:11,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:11,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846416110] [2022-11-19 07:10:11,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:11,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:12,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 07:10:12,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:12,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846416110] [2022-11-19 07:10:12,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846416110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:12,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:12,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:10:12,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880636924] [2022-11-19 07:10:12,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:12,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:10:12,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:12,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:10:12,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:10:12,005 INFO L87 Difference]: Start difference. First operand 304 states and 392 transitions. Second operand has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 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) [2022-11-19 07:10:12,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:12,509 INFO L93 Difference]: Finished difference Result 398 states and 499 transitions. [2022-11-19 07:10:12,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:10:12,512 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 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 38 [2022-11-19 07:10:12,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:12,514 INFO L225 Difference]: With dead ends: 398 [2022-11-19 07:10:12,515 INFO L226 Difference]: Without dead ends: 398 [2022-11-19 07:10:12,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:10:12,516 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 211 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:12,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 384 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:10:12,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-11-19 07:10:12,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 308. [2022-11-19 07:10:12,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 239 states have (on average 1.6610878661087867) internal successors, (397), 307 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:12,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 397 transitions. [2022-11-19 07:10:12,524 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 397 transitions. Word has length 38 [2022-11-19 07:10:12,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:12,525 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 397 transitions. [2022-11-19 07:10:12,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 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) [2022-11-19 07:10:12,525 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 397 transitions. [2022-11-19 07:10:12,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-19 07:10:12,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:12,526 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:12,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-19 07:10:12,527 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr96REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:10:12,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:12,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1457382675, now seen corresponding path program 1 times [2022-11-19 07:10:12,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:12,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256141470] [2022-11-19 07:10:12,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:12,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:13,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:10:13,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:13,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256141470] [2022-11-19 07:10:13,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256141470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:13,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:13,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-19 07:10:13,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601940423] [2022-11-19 07:10:13,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:13,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 07:10:13,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:13,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 07:10:13,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:10:13,176 INFO L87 Difference]: Start difference. First operand 308 states and 397 transitions. Second operand has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:14,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:14,679 INFO L93 Difference]: Finished difference Result 402 states and 455 transitions. [2022-11-19 07:10:14,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-19 07:10:14,680 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-11-19 07:10:14,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:14,682 INFO L225 Difference]: With dead ends: 402 [2022-11-19 07:10:14,682 INFO L226 Difference]: Without dead ends: 402 [2022-11-19 07:10:14,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2022-11-19 07:10:14,683 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 1259 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1259 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:14,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1259 Valid, 603 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-19 07:10:14,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-11-19 07:10:14,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 308. [2022-11-19 07:10:14,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 239 states have (on average 1.6569037656903767) internal successors, (396), 307 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:14,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 396 transitions. [2022-11-19 07:10:14,691 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 396 transitions. Word has length 38 [2022-11-19 07:10:14,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:14,691 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 396 transitions. [2022-11-19 07:10:14,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:14,692 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 396 transitions. [2022-11-19 07:10:14,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-19 07:10:14,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:14,693 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:14,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-19 07:10:14,693 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:10:14,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:14,694 INFO L85 PathProgramCache]: Analyzing trace with hash 2017471956, now seen corresponding path program 1 times [2022-11-19 07:10:14,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:14,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309368568] [2022-11-19 07:10:14,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:14,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:15,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:10:15,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:15,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309368568] [2022-11-19 07:10:15,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309368568] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:10:15,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189659490] [2022-11-19 07:10:15,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:15,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:10:15,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:10:15,871 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:10:15,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 07:10:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:16,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-19 07:10:16,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:16,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:10:16,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:10:16,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:16,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-19 07:10:16,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:16,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:10:16,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:16,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:10:16,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:16,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-19 07:10:16,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:16,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-19 07:10:16,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:16,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:10:16,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:16,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:10:16,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:16,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-19 07:10:16,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:10:16,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-19 07:10:16,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-19 07:10:16,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:10:16,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:10:17,374 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:10:17,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-19 07:10:17,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2022-11-19 07:10:17,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:10:17,399 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:10:17,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-19 07:10:17,402 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:17,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-11-19 07:10:17,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:10:17,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189659490] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:10:17,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1015120430] [2022-11-19 07:10:17,472 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2022-11-19 07:10:17,472 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:10:17,473 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:10:17,473 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:10:17,473 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:10:17,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-19 07:10:17,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:10:17,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-19 07:10:17,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:10:17,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-19 07:10:17,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,589 INFO L350 Elim1Store]: Elim1 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 29 treesize of output 35 [2022-11-19 07:10:17,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-19 07:10:17,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-19 07:10:17,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-19 07:10:17,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 07:10:17,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 07:10:17,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 07:10:17,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 07:10:17,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 36 [2022-11-19 07:10:17,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 47 [2022-11-19 07:10:17,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,827 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:17,828 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:17,859 INFO L321 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-11-19 07:10:17,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 145 treesize of output 113 [2022-11-19 07:10:17,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 40 [2022-11-19 07:10:17,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 07:10:17,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:17,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:17,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:17,988 INFO L321 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2022-11-19 07:10:17,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 177 treesize of output 133 [2022-11-19 07:10:18,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 49 [2022-11-19 07:10:18,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 60 [2022-11-19 07:10:18,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2022-11-19 07:10:18,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:18,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:18,170 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-19 07:10:18,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 173 treesize of output 140 [2022-11-19 07:10:18,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 55 [2022-11-19 07:10:18,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2022-11-19 07:10:18,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,351 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:18,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,354 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:18,354 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:18,355 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:18,439 INFO L321 Elim1Store]: treesize reduction 80, result has 27.3 percent of original size [2022-11-19 07:10:18,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 494 treesize of output 458 [2022-11-19 07:10:18,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,470 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:18,479 INFO L321 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-11-19 07:10:18,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 624 treesize of output 583 [2022-11-19 07:10:18,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:18,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:18,500 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:18,501 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:18,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:18,559 INFO L321 Elim1Store]: treesize reduction 156, result has 26.4 percent of original size [2022-11-19 07:10:18,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 618 treesize of output 633 [2022-11-19 07:10:18,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:19,147 INFO L321 Elim1Store]: treesize reduction 338, result has 16.7 percent of original size [2022-11-19 07:10:19,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 1448 treesize of output 1425 [2022-11-19 07:10:19,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:19,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:19,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:19,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:19,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:19,804 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:19,952 INFO L321 Elim1Store]: treesize reduction 220, result has 18.2 percent of original size [2022-11-19 07:10:19,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 2657 treesize of output 1518 [2022-11-19 07:10:19,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:20,000 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:20,001 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:20,174 INFO L321 Elim1Store]: treesize reduction 384, result has 13.1 percent of original size [2022-11-19 07:10:20,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 19 case distinctions, treesize of input 2698 treesize of output 2164 [2022-11-19 07:10:20,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:20,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:20,265 INFO L321 Elim1Store]: treesize reduction 159, result has 8.6 percent of original size [2022-11-19 07:10:20,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2623 treesize of output 2344 [2022-11-19 07:10:21,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:21,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:21,113 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:21,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:21,116 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:21,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:21,120 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:21,123 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:21,383 INFO L321 Elim1Store]: treesize reduction 260, result has 11.6 percent of original size [2022-11-19 07:10:21,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 23 case distinctions, treesize of input 4976 treesize of output 2745 [2022-11-19 07:10:21,570 INFO L321 Elim1Store]: treesize reduction 208, result has 24.1 percent of original size [2022-11-19 07:10:21,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 4963 treesize of output 4439 [2022-11-19 07:10:21,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:21,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:21,659 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:21,661 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:21,661 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:21,846 INFO L321 Elim1Store]: treesize reduction 448, result has 9.1 percent of original size [2022-11-19 07:10:21,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 24 case distinctions, treesize of input 4797 treesize of output 3793 [2022-11-19 07:10:21,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:22,276 INFO L321 Elim1Store]: treesize reduction 458, result has 14.4 percent of original size [2022-11-19 07:10:22,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 26 case distinctions, treesize of input 4737 treesize of output 4511 [2022-11-19 07:10:26,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:26,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:26,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:26,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:26,141 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:26,142 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:26,143 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:26,144 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:26,317 INFO L321 Elim1Store]: treesize reduction 248, result has 12.1 percent of original size [2022-11-19 07:10:26,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 23 case distinctions, treesize of input 15303 treesize of output 8395 [2022-11-19 07:10:26,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:26,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:26,551 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:26,552 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:26,553 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:26,725 INFO L321 Elim1Store]: treesize reduction 432, result has 9.4 percent of original size [2022-11-19 07:10:26,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 24 case distinctions, treesize of input 15321 treesize of output 12066 [2022-11-19 07:10:27,143 INFO L321 Elim1Store]: treesize reduction 292, result has 20.0 percent of original size [2022-11-19 07:10:27,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 15314 treesize of output 13906 [2022-11-19 07:10:30,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:10:30,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:10:30,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:10:30,347 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 07:10:30,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-19 07:10:30,371 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:10:30,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-19 07:10:30,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 07:10:30,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:10:30,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:10:30,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:10:30,447 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-19 07:10:30,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2022-11-19 07:10:30,492 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-19 07:10:30,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-19 07:10:30,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:30,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-19 07:10:30,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:30,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2022-11-19 07:10:30,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-19 07:10:30,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 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 [2022-11-19 07:10:30,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2022-11-19 07:10:30,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:10:30,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:10:30,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:10:30,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 07:10:30,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 07:10:30,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:10:30,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 07:10:30,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:10:30,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:10:30,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:30,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:30,705 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:30,709 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:10:30,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2022-11-19 07:10:30,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:30,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:30,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:30,729 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:10:30,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2022-11-19 07:10:30,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:30,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:30,813 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:30,852 INFO L321 Elim1Store]: treesize reduction 62, result has 26.2 percent of original size [2022-11-19 07:10:30,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 70 [2022-11-19 07:10:30,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:30,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:30,878 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:30,912 INFO L321 Elim1Store]: treesize reduction 62, result has 26.2 percent of original size [2022-11-19 07:10:30,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 70 [2022-11-19 07:10:30,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:10:30,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 07:10:31,008 INFO L321 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2022-11-19 07:10:31,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 37 [2022-11-19 07:10:31,047 INFO L321 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2022-11-19 07:10:31,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 37 [2022-11-19 07:10:31,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 07:10:31,613 INFO L321 Elim1Store]: treesize reduction 107, result has 22.5 percent of original size [2022-11-19 07:10:31,614 INFO L350 Elim1Store]: Elim1 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 10 case distinctions, treesize of input 34 treesize of output 52 [2022-11-19 07:10:31,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2022-11-19 07:10:31,713 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:10:31,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-19 07:10:31,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:10:31,853 INFO L321 Elim1Store]: treesize reduction 46, result has 37.8 percent of original size [2022-11-19 07:10:31,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 109 treesize of output 129 [2022-11-19 07:10:32,043 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:10:32,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-19 07:10:32,093 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:10:32,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-19 07:10:32,133 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-19 07:10:32,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2022-11-19 07:10:32,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:10:32,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:10:32,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:10:32,279 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 07:10:32,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-19 07:10:32,309 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:10:32,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-19 07:10:32,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-19 07:10:32,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:10:32,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:32,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-19 07:10:32,344 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:10:38,719 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22957#(and (<= 0 |ULTIMATE.start_main_~#dst~1#1.offset|) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~#dst~1#1.offset| 0) (<= |ULTIMATE.start_main_~#sub1~0#1.offset| 0) (= (select |#valid| |ULTIMATE.start_main_~#sub2~0#1.base|) 1) (<= 0 |ULTIMATE.start_main_~dst~0#1.offset|) (<= (+ |ULTIMATE.start_main_~list~1#1.offset| 4) (select |#length| |ULTIMATE.start_main_~list~1#1.base|)) (not (= |ULTIMATE.start_main_~#sub2~0#1.base| |ULTIMATE.start_main_~list~1#1.base|)) (not (= (select |#valid| |ULTIMATE.start_main_~next~0#1.base|) 1)) (<= 0 |ULTIMATE.start_main_~node~1#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~list~1#1.offset| 0) (= (select |#valid| |ULTIMATE.start_main_~list~1#1.base|) 1) (<= 0 |ULTIMATE.start_main_~node~1#1.base|) (<= 0 |ULTIMATE.start_main_~#sub1~0#1.offset|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#sub2~0#1.base|) (<= 0 |ULTIMATE.start_main_~list~0#1.offset|) (<= 0 |ULTIMATE.start_main_~data~0#1.offset|) (<= |#NULL.base| 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#sub1~0#1.base|) |ULTIMATE.start_main_~#sub1~0#1.offset|) (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~list~1#1.base|) |ULTIMATE.start_main_~list~1#1.offset|)) (<= |ULTIMATE.start_main_~list~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~dst~0#1.base|) (= 4 (select |#length| |ULTIMATE.start_main_~#sub2~0#1.base|)) (= |ULTIMATE.start_main_~#sub2~0#1.offset| 0) (<= 0 |#NULL.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#sub1~0#1.base|) |ULTIMATE.start_main_~#sub1~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~list~1#1.base|) |ULTIMATE.start_main_~list~1#1.offset|)) (<= |ULTIMATE.start_main_~dst~0#1.base| 0) (<= |ULTIMATE.start_main_~node~1#1.base| 0) (<= |ULTIMATE.start_main_~data~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~list~1#1.offset|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sub1~0#1.base|) (<= 0 |ULTIMATE.start_main_~#dst~1#1.base|) (<= 0 (+ |ULTIMATE.start_main_~current~0#1.offset| 4)) (<= |ULTIMATE.start_main_~dst~0#1.offset| 0) (<= |ULTIMATE.start_main_~node~1#1.offset| 0))' at error location [2022-11-19 07:10:38,719 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:10:38,719 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:10:38,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 9] total 24 [2022-11-19 07:10:38,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793847296] [2022-11-19 07:10:38,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:10:38,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-19 07:10:38,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:38,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-19 07:10:38,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=2946, Unknown=3, NotChecked=0, Total=3192 [2022-11-19 07:10:38,722 INFO L87 Difference]: Start difference. First operand 308 states and 396 transitions. Second operand has 25 states, 25 states have (on average 3.68) internal successors, (92), 24 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:39,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:39,851 INFO L93 Difference]: Finished difference Result 321 states and 409 transitions. [2022-11-19 07:10:39,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-19 07:10:39,851 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.68) internal successors, (92), 24 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-11-19 07:10:39,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:39,853 INFO L225 Difference]: With dead ends: 321 [2022-11-19 07:10:39,853 INFO L226 Difference]: Without dead ends: 321 [2022-11-19 07:10:39,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 74 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1405 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=325, Invalid=3704, Unknown=3, NotChecked=0, Total=4032 [2022-11-19 07:10:39,855 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 95 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 210 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:39,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 1621 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 809 Invalid, 0 Unknown, 210 Unchecked, 0.8s Time] [2022-11-19 07:10:39,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-11-19 07:10:39,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 317. [2022-11-19 07:10:39,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 248 states have (on average 1.6330645161290323) internal successors, (405), 316 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:39,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 405 transitions. [2022-11-19 07:10:39,863 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 405 transitions. Word has length 39 [2022-11-19 07:10:39,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:39,864 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 405 transitions. [2022-11-19 07:10:39,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.68) internal successors, (92), 24 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:10:39,864 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 405 transitions. [2022-11-19 07:10:39,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-19 07:10:39,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:39,865 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:39,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:10:40,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-19 07:10:40,078 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 149 more)] === [2022-11-19 07:10:40,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:40,078 INFO L85 PathProgramCache]: Analyzing trace with hash -2024368557, now seen corresponding path program 1 times [2022-11-19 07:10:40,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:40,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866591283] [2022-11-19 07:10:40,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:40,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:43,478 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:43,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:43,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866591283] [2022-11-19 07:10:43,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866591283] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:10:43,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196759116] [2022-11-19 07:10:43,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:43,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:10:43,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:10:43,481 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:10:43,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71930c8-695a-44ea-967c-5db1c934916d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 07:10:43,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:43,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 118 conjunts are in the unsatisfiable core [2022-11-19 07:10:43,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:43,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 07:10:43,866 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:10:43,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-19 07:10:43,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:10:44,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:44,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2022-11-19 07:10:44,157 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-11-19 07:10:44,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2022-11-19 07:10:44,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2022-11-19 07:10:44,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2022-11-19 07:10:44,334 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-11-19 07:10:44,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2022-11-19 07:10:44,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 32 [2022-11-19 07:10:44,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:44,593 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:10:44,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 45 [2022-11-19 07:10:44,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:10:44,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:44,838 INFO L321 Elim1Store]: treesize reduction 90, result has 36.6 percent of original size [2022-11-19 07:10:44,839 INFO L350 Elim1Store]: Elim1 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 39 treesize of output 69 [2022-11-19 07:10:44,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-19 07:10:44,999 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:10:44,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 66 [2022-11-19 07:10:45,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:45,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-19 07:10:45,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:45,396 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:45,409 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-19 07:10:45,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 184 treesize of output 90 [2022-11-19 07:10:46,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:46,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:46,163 INFO L321 Elim1Store]: treesize reduction 44, result has 21.4 percent of original size [2022-11-19 07:10:46,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 192 treesize of output 98 [2022-11-19 07:10:46,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:46,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-19 07:10:46,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:46,877 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:46,900 INFO L321 Elim1Store]: treesize reduction 59, result has 20.3 percent of original size [2022-11-19 07:10:46,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 226 treesize of output 120 [2022-11-19 07:10:46,910 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:10:46,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 46 [2022-11-19 07:10:47,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:47,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 10 [2022-11-19 07:10:47,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:10:47,510 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:47,526 INFO L321 Elim1Store]: treesize reduction 65, result has 9.7 percent of original size [2022-11-19 07:10:47,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 132 treesize of output 89 [2022-11-19 07:10:47,914 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-19 07:10:47,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 133 treesize of output 60 [2022-11-19 07:10:48,070 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:10:48,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:12:48,888 WARN L233 SmtUtils]: Spent 57.76s on a formula simplification. DAG size of input: 112 DAG size of output: 77 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:13:14,165 WARN L233 SmtUtils]: Spent 7.68s on a formula simplification that was a NOOP. DAG size: 79 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:13:18,195 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:13:18,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 550 treesize of output 308 [2022-11-19 07:13:18,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:13:18,236 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:13:18,271 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:13:18,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 7562 treesize of output 7360 [2022-11-19 07:13:18,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33686 treesize of output 33278 [2022-11-19 07:13:20,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17334 treesize of output 17270