./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/sina5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/sina5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 503513a726b63dcf7252b591818901fbaab844b1443a8550e123aa98a06238f6 --- 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-e04fb08 [2022-11-16 11:16:18,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:16:18,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:16:18,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:16:18,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:16:18,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:16:18,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:16:18,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:16:18,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:16:18,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:16:18,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:16:18,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:16:18,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:16:18,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:16:18,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:16:18,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:16:18,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:16:18,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:16:18,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:16:18,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:16:18,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:16:18,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:16:18,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:16:18,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:16:18,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:16:18,489 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:16:18,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:16:18,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:16:18,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:16:18,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:16:18,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:16:18,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:16:18,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:16:18,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:16:18,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:16:18,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:16:18,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:16:18,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:16:18,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:16:18,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:16:18,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:16:18,509 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:16:18,552 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:16:18,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:16:18,553 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:16:18,553 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:16:18,554 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:16:18,555 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:16:18,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:16:18,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:16:18,556 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:16:18,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:16:18,557 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:16:18,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:16:18,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:16:18,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:16:18,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:16:18,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:16:18,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:16:18,559 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:16:18,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:16:18,560 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:16:18,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:16:18,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:16:18,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:16:18,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:16:18,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:16:18,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:16:18,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:16:18,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:16:18,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:16:18,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:16:18,565 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:16:18,565 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:16:18,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:16:18,566 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_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503513a726b63dcf7252b591818901fbaab844b1443a8550e123aa98a06238f6 [2022-11-16 11:16:18,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:16:18,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:16:18,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:16:18,962 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:16:18,963 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:16:18,965 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/array-fpi/sina5.c [2022-11-16 11:16:19,044 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/data/1a89d715c/e3bfc85845614e098ac2cc95a2c549f4/FLAGc93720745 [2022-11-16 11:16:19,589 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:16:19,589 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/sv-benchmarks/c/array-fpi/sina5.c [2022-11-16 11:16:19,596 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/data/1a89d715c/e3bfc85845614e098ac2cc95a2c549f4/FLAGc93720745 [2022-11-16 11:16:19,955 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/data/1a89d715c/e3bfc85845614e098ac2cc95a2c549f4 [2022-11-16 11:16:19,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:16:19,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:16:19,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:16:19,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:16:19,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:16:19,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:16:19" (1/1) ... [2022-11-16 11:16:19,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42909bda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:19, skipping insertion in model container [2022-11-16 11:16:19,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:16:19" (1/1) ... [2022-11-16 11:16:19,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:16:20,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:16:20,212 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/sv-benchmarks/c/array-fpi/sina5.c[588,601] [2022-11-16 11:16:20,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:16:20,255 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:16:20,269 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/sv-benchmarks/c/array-fpi/sina5.c[588,601] [2022-11-16 11:16:20,280 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:16:20,295 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:16:20,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:20 WrapperNode [2022-11-16 11:16:20,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:16:20,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:16:20,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:16:20,297 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:16:20,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:20" (1/1) ... [2022-11-16 11:16:20,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:20" (1/1) ... [2022-11-16 11:16:20,337 INFO L138 Inliner]: procedures = 17, calls = 35, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 117 [2022-11-16 11:16:20,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:16:20,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:16:20,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:16:20,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:16:20,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:20" (1/1) ... [2022-11-16 11:16:20,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:20" (1/1) ... [2022-11-16 11:16:20,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:20" (1/1) ... [2022-11-16 11:16:20,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:20" (1/1) ... [2022-11-16 11:16:20,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:20" (1/1) ... [2022-11-16 11:16:20,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:20" (1/1) ... [2022-11-16 11:16:20,366 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:20" (1/1) ... [2022-11-16 11:16:20,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:20" (1/1) ... [2022-11-16 11:16:20,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:16:20,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:16:20,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:16:20,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:16:20,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:20" (1/1) ... [2022-11-16 11:16:20,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:16:20,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:16:20,427 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:16:20,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:16:20,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:16:20,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:16:20,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:16:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:16:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:16:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:16:20,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:16:20,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:16:20,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:16:20,553 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:16:20,555 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:16:20,901 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:16:20,919 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:16:20,919 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-16 11:16:20,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:16:20 BoogieIcfgContainer [2022-11-16 11:16:20,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:16:20,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:16:20,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:16:20,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:16:20,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:16:19" (1/3) ... [2022-11-16 11:16:20,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1606e660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:16:20, skipping insertion in model container [2022-11-16 11:16:20,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:16:20" (2/3) ... [2022-11-16 11:16:20,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1606e660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:16:20, skipping insertion in model container [2022-11-16 11:16:20,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:16:20" (3/3) ... [2022-11-16 11:16:20,932 INFO L112 eAbstractionObserver]: Analyzing ICFG sina5.c [2022-11-16 11:16:20,978 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:16:20,978 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:16:21,091 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:16:21,098 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@401b0d5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:16:21,107 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:16:21,124 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:21,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 11:16:21,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:16:21,133 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:21,134 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:16:21,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:21,148 INFO L85 PathProgramCache]: Analyzing trace with hash -635308358, now seen corresponding path program 1 times [2022-11-16 11:16:21,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:21,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295876423] [2022-11-16 11:16:21,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:21,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:21,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:16:21,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:21,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295876423] [2022-11-16 11:16:21,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295876423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:21,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:21,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:16:21,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866413446] [2022-11-16 11:16:21,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:21,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:16:21,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:21,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:16:21,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:16:21,472 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 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 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:21,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:16:21,497 INFO L93 Difference]: Finished difference Result 56 states and 82 transitions. [2022-11-16 11:16:21,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:16:21,500 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2022-11-16 11:16:21,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:16:21,514 INFO L225 Difference]: With dead ends: 56 [2022-11-16 11:16:21,515 INFO L226 Difference]: Without dead ends: 26 [2022-11-16 11:16:21,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:16:21,526 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:16:21,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:16:21,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-16 11:16:21,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-16 11:16:21,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:21,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-11-16 11:16:21,585 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 18 [2022-11-16 11:16:21,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:16:21,585 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-11-16 11:16:21,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:21,587 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-11-16 11:16:21,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 11:16:21,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:16:21,588 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:21,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:16:21,589 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:16:21,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:21,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1344199344, now seen corresponding path program 1 times [2022-11-16 11:16:21,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:21,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250633912] [2022-11-16 11:16:21,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:21,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:21,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:16:21,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:21,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250633912] [2022-11-16 11:16:21,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250633912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:16:21,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:16:21,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:16:21,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710385681] [2022-11-16 11:16:21,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:16:21,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:16:21,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:21,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:16:21,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:16:21,946 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:22,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:16:22,093 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2022-11-16 11:16:22,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:16:22,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2022-11-16 11:16:22,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:16:22,098 INFO L225 Difference]: With dead ends: 61 [2022-11-16 11:16:22,098 INFO L226 Difference]: Without dead ends: 42 [2022-11-16 11:16:22,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:16:22,106 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 53 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:16:22,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 18 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:16:22,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-16 11:16:22,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2022-11-16 11:16:22,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:22,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-11-16 11:16:22,128 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 18 [2022-11-16 11:16:22,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:16:22,130 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-11-16 11:16:22,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:22,134 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-11-16 11:16:22,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 11:16:22,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:16:22,137 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, 1, 1, 1, 1] [2022-11-16 11:16:22,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:16:22,139 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:16:22,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:22,148 INFO L85 PathProgramCache]: Analyzing trace with hash -933126362, now seen corresponding path program 1 times [2022-11-16 11:16:22,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:22,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102350153] [2022-11-16 11:16:22,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:22,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:25,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:16:25,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:25,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102350153] [2022-11-16 11:16:25,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102350153] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:16:25,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834899955] [2022-11-16 11:16:25,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:25,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:16:25,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:16:25,547 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:16:25,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:16:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:25,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-16 11:16:25,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:16:25,970 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 [2022-11-16 11:16:25,987 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 11:16:25,988 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 23 treesize of output 19 [2022-11-16 11:16:26,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 11:16:26,466 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 [2022-11-16 11:16:26,662 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 33 [2022-11-16 11:16:26,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2022-11-16 11:16:27,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 35 [2022-11-16 11:16:27,596 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:16:27,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:16:28,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:16:28,786 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:16:28,788 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:16:28,874 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:16:28,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834899955] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:16:28,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:16:28,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 44 [2022-11-16 11:16:28,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785409387] [2022-11-16 11:16:28,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:16:28,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-16 11:16:28,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:28,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-16 11:16:28,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1623, Unknown=0, NotChecked=0, Total=1892 [2022-11-16 11:16:28,886 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 44 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 44 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:30,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:16:30,947 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2022-11-16 11:16:30,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 11:16:30,949 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 44 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-16 11:16:30,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:16:30,950 INFO L225 Difference]: With dead ends: 64 [2022-11-16 11:16:30,951 INFO L226 Difference]: Without dead ends: 62 [2022-11-16 11:16:30,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 29 SyntacticMatches, 6 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1171 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=478, Invalid=2714, Unknown=0, NotChecked=0, Total=3192 [2022-11-16 11:16:30,953 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 103 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:16:30,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 119 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 426 Invalid, 0 Unknown, 44 Unchecked, 0.7s Time] [2022-11-16 11:16:30,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-16 11:16:30,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 52. [2022-11-16 11:16:30,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 51 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:30,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2022-11-16 11:16:30,988 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 28 [2022-11-16 11:16:30,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:16:30,989 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2022-11-16 11:16:30,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 44 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:30,991 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2022-11-16 11:16:30,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-16 11:16:30,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:16:30,993 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:31,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:16:31,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:16:31,202 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:16:31,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:31,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1642466588, now seen corresponding path program 2 times [2022-11-16 11:16:31,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:31,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502045566] [2022-11-16 11:16:31,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:31,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:31,331 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:16:31,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:31,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502045566] [2022-11-16 11:16:31,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502045566] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:16:31,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774428282] [2022-11-16 11:16:31,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:16:31,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:16:31,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:16:31,335 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:16:31,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:16:31,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:16:31,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:16:31,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:16:31,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:16:31,529 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:16:31,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:16:31,594 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:16:31,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774428282] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:16:31,595 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:16:31,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-16 11:16:31,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951506711] [2022-11-16 11:16:31,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:16:31,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:16:31,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:31,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:16:31,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:16:31,598 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:31,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:16:31,857 INFO L93 Difference]: Finished difference Result 134 states and 158 transitions. [2022-11-16 11:16:31,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:16:31,858 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-16 11:16:31,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:16:31,859 INFO L225 Difference]: With dead ends: 134 [2022-11-16 11:16:31,860 INFO L226 Difference]: Without dead ends: 78 [2022-11-16 11:16:31,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:16:31,866 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 84 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:16:31,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 58 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:16:31,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-16 11:16:31,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 56. [2022-11-16 11:16:31,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 55 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:31,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2022-11-16 11:16:31,895 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 30 [2022-11-16 11:16:31,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:16:31,897 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2022-11-16 11:16:31,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:31,902 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2022-11-16 11:16:31,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-16 11:16:31,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:16:31,903 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:31,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:16:32,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:16:32,110 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:16:32,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:32,111 INFO L85 PathProgramCache]: Analyzing trace with hash -396360796, now seen corresponding path program 3 times [2022-11-16 11:16:32,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:32,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64119147] [2022-11-16 11:16:32,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:32,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:32,232 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:16:32,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:32,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64119147] [2022-11-16 11:16:32,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64119147] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:16:32,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482907169] [2022-11-16 11:16:32,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:16:32,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:16:32,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:16:32,235 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:16:32,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:16:32,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 11:16:32,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:16:32,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:16:32,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:16:32,445 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:16:32,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:16:32,516 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:16:32,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482907169] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:16:32,516 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:16:32,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-16 11:16:32,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983342130] [2022-11-16 11:16:32,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:16:32,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:16:32,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:16:32,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:16:32,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:16:32,519 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:32,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:16:32,762 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2022-11-16 11:16:32,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:16:32,763 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-16 11:16:32,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:16:32,763 INFO L225 Difference]: With dead ends: 74 [2022-11-16 11:16:32,764 INFO L226 Difference]: Without dead ends: 57 [2022-11-16 11:16:32,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:16:32,765 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 108 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:16:32,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 48 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:16:32,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-16 11:16:32,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 41. [2022-11-16 11:16:32,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:32,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2022-11-16 11:16:32,775 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 30 [2022-11-16 11:16:32,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:16:32,775 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2022-11-16 11:16:32,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:16:32,776 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2022-11-16 11:16:32,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-16 11:16:32,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:16:32,777 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:16:32,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:16:32,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:16:32,984 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:16:32,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:16:32,984 INFO L85 PathProgramCache]: Analyzing trace with hash 389318684, now seen corresponding path program 4 times [2022-11-16 11:16:32,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:16:32,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722855328] [2022-11-16 11:16:32,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:16:32,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:16:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:16:37,308 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:16:37,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:16:37,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722855328] [2022-11-16 11:16:37,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722855328] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:16:37,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912371146] [2022-11-16 11:16:37,309 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:16:37,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:16:37,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:16:37,316 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:16:37,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:16:37,471 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:16:37,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:16:37,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 89 conjunts are in the unsatisfiable core [2022-11-16 11:16:37,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:16:37,497 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 10 treesize of output 8 [2022-11-16 11:16:37,512 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 [2022-11-16 11:16:37,613 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 [2022-11-16 11:16:37,788 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 35 treesize of output 37 [2022-11-16 11:16:38,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:16:38,444 INFO L321 Elim1Store]: treesize reduction 91, result has 20.9 percent of original size [2022-11-16 11:16:38,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 51 [2022-11-16 11:16:38,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:16:38,770 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:16:38,772 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:16:38,783 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-16 11:16:38,784 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 3 case distinctions, treesize of input 58 treesize of output 66 [2022-11-16 11:16:39,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:16:39,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:16:39,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:16:39,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:16:39,600 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:16:39,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:16:39,636 INFO L321 Elim1Store]: treesize reduction 92, result has 17.9 percent of original size [2022-11-16 11:16:39,637 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 14 case distinctions, treesize of input 72 treesize of output 71 [2022-11-16 11:16:40,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:16:40,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:16:40,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:16:40,008 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:16:40,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:16:40,015 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-16 11:16:40,016 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 64 [2022-11-16 11:16:40,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:16:40,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:16:40,584 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:16:40,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:16:40,587 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:16:40,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:16:40,623 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-11-16 11:16:40,624 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 5 new quantified variables, introduced 10 case distinctions, treesize of input 91 treesize of output 70 [2022-11-16 11:16:41,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:16:41,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:16:41,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:16:41,029 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:16:41,046 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-11-16 11:16:41,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 100 treesize of output 68 [2022-11-16 11:16:41,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:16:41,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:16:41,532 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:16:41,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:16:41,534 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:16:41,574 INFO L321 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2022-11-16 11:16:41,575 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 6 new quantified variables, introduced 14 case distinctions, treesize of input 94 treesize of output 85 [2022-11-16 11:16:42,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:16:42,349 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:16:42,622 INFO L321 Elim1Store]: treesize reduction 370, result has 26.0 percent of original size [2022-11-16 11:16:42,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 33 case distinctions, treesize of input 155 treesize of output 225 [2022-11-16 11:16:53,417 INFO L321 Elim1Store]: treesize reduction 42, result has 63.5 percent of original size [2022-11-16 11:16:53,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 135 treesize of output 151 [2022-11-16 11:16:53,752 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:16:53,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:17:03,420 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:17:03,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912371146] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:17:03,420 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:17:03,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 79 [2022-11-16 11:17:03,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370373908] [2022-11-16 11:17:03,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:17:03,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-11-16 11:17:03,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:03,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-11-16 11:17:03,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=594, Invalid=5568, Unknown=0, NotChecked=0, Total=6162 [2022-11-16 11:17:03,425 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 79 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 79 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:45,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:17:45,342 INFO L93 Difference]: Finished difference Result 114 states and 132 transitions. [2022-11-16 11:17:45,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-16 11:17:45,344 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 79 states have internal predecessors, (103), 0 states have call successors, (0), 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 [2022-11-16 11:17:45,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:17:45,346 INFO L225 Difference]: With dead ends: 114 [2022-11-16 11:17:45,346 INFO L226 Difference]: Without dead ends: 112 [2022-11-16 11:17:45,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3618 ImplicationChecksByTransitivity, 54.7s TimeCoverageRelationStatistics Valid=1140, Invalid=9990, Unknown=0, NotChecked=0, Total=11130 [2022-11-16 11:17:45,351 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 29 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 212 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:17:45,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 349 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 457 Invalid, 0 Unknown, 212 Unchecked, 3.2s Time] [2022-11-16 11:17:45,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-16 11:17:45,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 100. [2022-11-16 11:17:45,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.1818181818181819) internal successors, (117), 99 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:45,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2022-11-16 11:17:45,390 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 38 [2022-11-16 11:17:45,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:17:45,391 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2022-11-16 11:17:45,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 79 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:45,391 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2022-11-16 11:17:45,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-16 11:17:45,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:17:45,393 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:17:45,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:17:45,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:17:45,603 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:17:45,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:45,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1666934362, now seen corresponding path program 5 times [2022-11-16 11:17:45,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:45,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30544910] [2022-11-16 11:17:45,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:45,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:45,753 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:17:45,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:45,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30544910] [2022-11-16 11:17:45,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30544910] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:17:45,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603871273] [2022-11-16 11:17:45,754 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:17:45,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:17:45,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:17:45,756 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:17:45,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:17:45,990 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-16 11:17:45,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:17:45,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:17:45,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:17:46,113 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:17:46,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:17:46,221 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:17:46,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603871273] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:17:46,222 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:17:46,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-11-16 11:17:46,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294319613] [2022-11-16 11:17:46,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:17:46,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:17:46,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:46,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:17:46,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:17:46,224 INFO L87 Difference]: Start difference. First operand 100 states and 117 transitions. Second operand has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 19 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:46,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:17:46,946 INFO L93 Difference]: Finished difference Result 171 states and 197 transitions. [2022-11-16 11:17:46,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 11:17:46,947 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 19 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-11-16 11:17:46,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:17:46,948 INFO L225 Difference]: With dead ends: 171 [2022-11-16 11:17:46,948 INFO L226 Difference]: Without dead ends: 116 [2022-11-16 11:17:46,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 76 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=858, Unknown=0, NotChecked=0, Total=1056 [2022-11-16 11:17:46,949 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 357 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:17:46,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 162 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:17:46,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-16 11:17:46,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 82. [2022-11-16 11:17:46,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0864197530864197) internal successors, (88), 81 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:46,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2022-11-16 11:17:46,997 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 40 [2022-11-16 11:17:46,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:17:47,000 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2022-11-16 11:17:47,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 19 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:47,000 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2022-11-16 11:17:47,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-16 11:17:47,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:17:47,007 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:17:47,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:17:47,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 11:17:47,214 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:17:47,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:47,214 INFO L85 PathProgramCache]: Analyzing trace with hash -465930606, now seen corresponding path program 1 times [2022-11-16 11:17:47,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:47,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011759125] [2022-11-16 11:17:47,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:47,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:53,709 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:17:53,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:53,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011759125] [2022-11-16 11:17:53,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011759125] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:17:53,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899678407] [2022-11-16 11:17:53,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:53,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:17:53,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:17:53,711 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:17:53,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:17:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:53,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-16 11:17:53,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:17:53,984 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 11:17:53,985 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 54 treesize of output 50 [2022-11-16 11:17:54,095 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 15 treesize of output 11 [2022-11-16 11:17:54,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:17:54,317 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 [2022-11-16 11:17:54,491 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 23 [2022-11-16 11:17:54,533 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 23 [2022-11-16 11:17:54,680 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 23 [2022-11-16 11:17:54,729 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 23 [2022-11-16 11:17:54,834 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 23 [2022-11-16 11:17:54,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:17:54,873 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 28 treesize of output 30 [2022-11-16 11:17:55,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:17:55,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:17:55,035 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-16 11:17:55,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:17:55,248 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 34 [2022-11-16 11:17:56,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 49 [2022-11-16 11:17:56,209 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 11:17:56,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:18:48,208 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:18:48,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 69 [2022-11-16 11:18:50,231 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_1))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse2 (+ (* c_~N~0 2) 1))) (or (= (+ (select .cse0 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (select (select (store .cse1 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~a~0#1.offset| .cse2)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|)) .cse2) (not (= (+ (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_1 |ULTIMATE.start_main_~#sum~0#1.offset|)) .cse2)))))) is different from false [2022-11-16 11:18:50,398 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_394 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_394) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_1))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse2 (+ (* c_~N~0 2) 1))) (or (= (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~a~0#1.offset| .cse2)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse1 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse2) (not (= (+ (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_1 |ULTIMATE.start_main_~#sum~0#1.offset|)) .cse2)))))) is different from false [2022-11-16 11:18:50,507 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_394 (Array Int Int))) (let ((.cse0 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_394) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_1))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse2 (+ (* c_~N~0 2) 1))) (or (= (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~a~0#1.offset| .cse2)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse1 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse2) (not (= (+ (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_1 |ULTIMATE.start_main_~#sum~0#1.offset|)) .cse2)))))) is different from false [2022-11-16 11:18:50,780 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_394 (Array Int Int))) (let ((.cse2 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) 8 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_394) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_1))) (let ((.cse1 (select .cse2 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse0 (+ (* c_~N~0 2) 1))) (or (= .cse0 (+ (select .cse1 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (select (select (store .cse2 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~a~0#1.offset| .cse0)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|))) (not (= (+ (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_1 |ULTIMATE.start_main_~#sum~0#1.offset|)) .cse0)))))) is different from false [2022-11-16 11:18:50,807 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:18:50,808 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 152 treesize of output 97 [2022-11-16 11:18:50,816 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 669 treesize of output 649 [2022-11-16 11:18:50,866 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:18:50,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 426 treesize of output 412 [2022-11-16 11:18:50,914 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:18:50,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 656 treesize of output 578 [2022-11-16 11:18:51,029 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:18:51,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 601 treesize of output 641 [2022-11-16 11:18:52,684 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 9 not checked. [2022-11-16 11:18:52,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899678407] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:18:52,684 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:18:52,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 18, 18] total 65 [2022-11-16 11:18:52,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896690575] [2022-11-16 11:18:52,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:18:52,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-11-16 11:18:52,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:18:52,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-11-16 11:18:52,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=482, Invalid=3180, Unknown=14, NotChecked=484, Total=4160 [2022-11-16 11:18:52,688 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand has 65 states, 65 states have (on average 1.7076923076923076) internal successors, (111), 65 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:24,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:24,830 INFO L93 Difference]: Finished difference Result 127 states and 140 transitions. [2022-11-16 11:19:24,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-16 11:19:24,831 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.7076923076923076) internal successors, (111), 65 states have internal predecessors, (111), 0 states have call successors, (0), 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 42 [2022-11-16 11:19:24,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:24,832 INFO L225 Difference]: With dead ends: 127 [2022-11-16 11:19:24,832 INFO L226 Difference]: Without dead ends: 94 [2022-11-16 11:19:24,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 3340 ImplicationChecksByTransitivity, 87.8s TimeCoverageRelationStatistics Valid=1443, Invalid=9900, Unknown=15, NotChecked=852, Total=12210 [2022-11-16 11:19:24,836 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 239 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 1565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 409 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:24,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 137 Invalid, 1565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 952 Invalid, 0 Unknown, 409 Unchecked, 1.6s Time] [2022-11-16 11:19:24,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-16 11:19:24,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2022-11-16 11:19:24,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.1318681318681318) internal successors, (103), 91 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:24,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2022-11-16 11:19:24,864 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 42 [2022-11-16 11:19:24,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:24,865 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2022-11-16 11:19:24,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.7076923076923076) internal successors, (111), 65 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:24,865 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2022-11-16 11:19:24,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-16 11:19:24,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:24,866 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:24,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:19:25,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 11:19:25,071 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:19:25,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:25,072 INFO L85 PathProgramCache]: Analyzing trace with hash 383514002, now seen corresponding path program 6 times [2022-11-16 11:19:25,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:25,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669306033] [2022-11-16 11:19:25,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:25,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:32,316 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:32,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:32,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669306033] [2022-11-16 11:19:32,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669306033] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:19:32,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34139085] [2022-11-16 11:19:32,317 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 11:19:32,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:32,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:19:32,318 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:19:32,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:19:32,535 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-16 11:19:32,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:19:32,540 WARN L261 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 123 conjunts are in the unsatisfiable core [2022-11-16 11:19:32,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:19:32,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:32,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-16 11:19:32,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:19:32,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:32,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 11:19:33,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:33,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:33,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-16 11:19:33,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:33,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:33,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:33,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2022-11-16 11:19:34,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:34,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:34,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:34,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:34,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 52 [2022-11-16 11:19:34,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:34,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:34,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:34,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:34,743 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-16 11:19:34,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 66 [2022-11-16 11:19:35,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:35,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:35,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:35,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:35,220 INFO L321 Elim1Store]: treesize reduction 31, result has 18.4 percent of original size [2022-11-16 11:19:35,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 81 [2022-11-16 11:19:36,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:36,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:36,416 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:19:36,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:36,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:36,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:36,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:36,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 90 [2022-11-16 11:19:37,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:37,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:37,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:37,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:37,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:37,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:37,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:37,055 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:19:37,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 93 [2022-11-16 11:19:37,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:37,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:37,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:37,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:37,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:37,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:37,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 88 [2022-11-16 11:19:38,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:38,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:38,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:38,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:38,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:38,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:38,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 88 [2022-11-16 11:19:38,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:38,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:38,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:38,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:38,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:38,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:38,903 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-16 11:19:38,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 99 [2022-11-16 11:19:39,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:39,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:39,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:39,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:39,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:39,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:39,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:39,714 INFO L321 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2022-11-16 11:19:39,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 11 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 5 case distinctions, treesize of input 108 treesize of output 108 [2022-11-16 11:19:41,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:41,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:41,122 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:19:41,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:41,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:41,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:41,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:41,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:41,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:41,133 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:19:41,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:41,137 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:19:41,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 9 disjoint index pairs (out of 45 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 94 [2022-11-16 11:19:41,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:41,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:41,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:41,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:41,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:41,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:41,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:41,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:41,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:41,829 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:19:41,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:41,832 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:19:41,833 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:19:41,850 INFO L321 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2022-11-16 11:19:41,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 87 treesize of output 87 [2022-11-16 11:19:42,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:42,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:42,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:42,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:42,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:42,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:42,538 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:19:42,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:42,542 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:19:42,560 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-16 11:19:42,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 78 treesize of output 75 [2022-11-16 11:19:43,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:43,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:43,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:43,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:43,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:43,795 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 11:19:43,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 44 [2022-11-16 11:19:43,918 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:43,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:20:40,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:20:40,372 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:20:40,372 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:20:40,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:20:40,377 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:20:40,377 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:20:40,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:20:40,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:20:40,397 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:20:40,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34139085] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:20:40,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:20:40,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 42, 40] total 114 [2022-11-16 11:20:40,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682739772] [2022-11-16 11:20:40,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:20:40,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-11-16 11:20:40,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:20:40,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-11-16 11:20:40,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1260, Invalid=11621, Unknown=1, NotChecked=0, Total=12882 [2022-11-16 11:20:40,404 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand has 114 states, 114 states have (on average 1.1842105263157894) internal successors, (135), 114 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:21:01,878 WARN L233 SmtUtils]: Spent 9.39s on a formula simplification that was a NOOP. DAG size: 222 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:22:17,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:17,841 INFO L93 Difference]: Finished difference Result 170 states and 195 transitions. [2022-11-16 11:22:17,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-11-16 11:22:17,844 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 1.1842105263157894) internal successors, (135), 114 states have internal predecessors, (135), 0 states have call successors, (0), 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 48 [2022-11-16 11:22:17,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:17,845 INFO L225 Difference]: With dead ends: 170 [2022-11-16 11:22:17,845 INFO L226 Difference]: Without dead ends: 168 [2022-11-16 11:22:17,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8551 ImplicationChecksByTransitivity, 158.9s TimeCoverageRelationStatistics Valid=2340, Invalid=21520, Unknown=10, NotChecked=0, Total=23870 [2022-11-16 11:22:17,851 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 63 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1005 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:17,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 277 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 412 Invalid, 0 Unknown, 1005 Unchecked, 0.7s Time] [2022-11-16 11:22:17,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-16 11:22:17,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 156. [2022-11-16 11:22:17,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.1548387096774193) internal successors, (179), 155 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:17,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 179 transitions. [2022-11-16 11:22:17,919 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 179 transitions. Word has length 48 [2022-11-16 11:22:17,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:17,919 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 179 transitions. [2022-11-16 11:22:17,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 1.1842105263157894) internal successors, (135), 114 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:17,920 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 179 transitions. [2022-11-16 11:22:17,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-16 11:22:17,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:17,921 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:17,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:22:18,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:22:18,128 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:22:18,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:18,129 INFO L85 PathProgramCache]: Analyzing trace with hash 686177872, now seen corresponding path program 7 times [2022-11-16 11:22:18,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:18,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391966592] [2022-11-16 11:22:18,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:18,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:18,372 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-16 11:22:18,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:18,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391966592] [2022-11-16 11:22:18,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391966592] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:22:18,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055653659] [2022-11-16 11:22:18,373 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 11:22:18,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:22:18,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:22:18,375 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:22:18,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:22:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:18,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:22:18,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:18,743 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-16 11:22:18,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:22:18,881 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-16 11:22:18,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055653659] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:22:18,882 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:22:18,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-11-16 11:22:18,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532643302] [2022-11-16 11:22:18,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:22:18,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 11:22:18,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:18,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 11:22:18,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:22:18,884 INFO L87 Difference]: Start difference. First operand 156 states and 179 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:19,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:19,450 INFO L93 Difference]: Finished difference Result 302 states and 340 transitions. [2022-11-16 11:22:19,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:22:19,451 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-11-16 11:22:19,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:19,452 INFO L225 Difference]: With dead ends: 302 [2022-11-16 11:22:19,452 INFO L226 Difference]: Without dead ends: 213 [2022-11-16 11:22:19,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 86 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:22:19,454 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 179 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:19,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 104 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:22:19,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-11-16 11:22:19,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 176. [2022-11-16 11:22:19,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.0971428571428572) internal successors, (192), 175 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:19,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 192 transitions. [2022-11-16 11:22:19,533 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 192 transitions. Word has length 50 [2022-11-16 11:22:19,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:19,533 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 192 transitions. [2022-11-16 11:22:19,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:19,534 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 192 transitions. [2022-11-16 11:22:19,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-16 11:22:19,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:19,535 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:19,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:22:19,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:22:19,741 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:22:19,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:19,742 INFO L85 PathProgramCache]: Analyzing trace with hash -921964338, now seen corresponding path program 8 times [2022-11-16 11:22:19,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:19,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714554714] [2022-11-16 11:22:19,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:19,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:19,976 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 11:22:19,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:19,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714554714] [2022-11-16 11:22:19,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714554714] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:22:19,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103511663] [2022-11-16 11:22:19,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:22:19,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:22:19,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:22:19,980 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:22:19,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:22:20,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:22:20,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:22:20,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:22:20,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:20,320 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 11:22:20,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:22:20,479 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 11:22:20,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103511663] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:22:20,480 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:22:20,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-11-16 11:22:20,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082454443] [2022-11-16 11:22:20,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:22:20,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 11:22:20,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:20,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 11:22:20,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:22:20,482 INFO L87 Difference]: Start difference. First operand 176 states and 192 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:21,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:21,417 INFO L93 Difference]: Finished difference Result 212 states and 226 transitions. [2022-11-16 11:22:21,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:22:21,418 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-11-16 11:22:21,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:21,419 INFO L225 Difference]: With dead ends: 212 [2022-11-16 11:22:21,420 INFO L226 Difference]: Without dead ends: 148 [2022-11-16 11:22:21,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 90 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:22:21,421 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 155 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:21,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 188 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:22:21,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-16 11:22:21,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 104. [2022-11-16 11:22:21,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0679611650485437) internal successors, (110), 103 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:21,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 110 transitions. [2022-11-16 11:22:21,466 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 110 transitions. Word has length 52 [2022-11-16 11:22:21,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:21,466 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 110 transitions. [2022-11-16 11:22:21,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:22:21,467 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 110 transitions. [2022-11-16 11:22:21,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 11:22:21,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:21,468 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:21,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:22:21,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:22:21,676 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:22:21,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:21,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1433546370, now seen corresponding path program 2 times [2022-11-16 11:22:21,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:21,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497271886] [2022-11-16 11:22:21,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:21,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:28,824 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:22:28,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:28,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497271886] [2022-11-16 11:22:28,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497271886] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:22:28,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49614850] [2022-11-16 11:22:28,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:22:28,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:22:28,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:22:28,856 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:22:28,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:22:29,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:22:29,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:22:29,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-16 11:22:29,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:29,246 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 11:22:29,246 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 108 treesize of output 102 [2022-11-16 11:22:29,372 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 15 treesize of output 11 [2022-11-16 11:22:29,578 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 28 treesize of output 27 [2022-11-16 11:22:29,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:29,712 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 [2022-11-16 11:22:29,905 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 23 [2022-11-16 11:22:29,953 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 23 [2022-11-16 11:22:30,024 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 23 [2022-11-16 11:22:30,213 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 23 [2022-11-16 11:22:30,252 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 23 [2022-11-16 11:22:30,297 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 23 [2022-11-16 11:22:30,378 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 23 [2022-11-16 11:22:30,431 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 23 [2022-11-16 11:22:30,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:30,477 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 28 treesize of output 30 [2022-11-16 11:22:30,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:30,677 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:22:30,678 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-16 11:22:30,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:30,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:30,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:30,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 43 [2022-11-16 11:22:31,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:31,128 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 34 [2022-11-16 11:22:32,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 49 [2022-11-16 11:22:32,475 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 11:22:32,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:22:36,277 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_795 Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_799 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_795)))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse2 (+ v_ArrVal_795 (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|))) (.cse3 (+ (* c_~N~0 2) 1))) (or (= (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~a~0#1.base| (store (store .cse1 |c_ULTIMATE.start_main_~a~0#1.offset| .cse2) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_799)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse1 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse3) (not (= .cse2 .cse3))))))) is different from false [2022-11-16 11:22:36,312 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:22:36,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 74 [2022-11-16 11:22:36,329 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_3 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_799 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_3))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse2 (+ (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_3 |ULTIMATE.start_main_~#sum~0#1.offset|))) (.cse3 (+ (* c_~N~0 2) 1))) (or (= (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~a~0#1.base| (store (store .cse1 |c_ULTIMATE.start_main_~a~0#1.offset| .cse2) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_799)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse1 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse3) (not (= .cse2 .cse3))))))) is different from false [2022-11-16 11:22:36,532 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_789 (Array Int Int)) (v_arrayElimArr_3 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_799 Int)) (let ((.cse2 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_789) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_3))) (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse0 (+ (select .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_3 |ULTIMATE.start_main_~#sum~0#1.offset|))) (.cse1 (+ (* c_~N~0 2) 1))) (or (not (= .cse0 .cse1)) (= (+ (select (select (store .cse2 |c_ULTIMATE.start_main_~a~0#1.base| (store (store .cse3 |c_ULTIMATE.start_main_~a~0#1.offset| .cse0) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_799)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse3 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse1)))))) is different from false [2022-11-16 11:22:36,682 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_789 (Array Int Int)) (v_arrayElimArr_3 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_799 Int)) (let ((.cse3 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_789) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_3))) (let ((.cse2 (select .cse3 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse0 (+ (select .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_3 |ULTIMATE.start_main_~#sum~0#1.offset|))) (.cse1 (+ (* c_~N~0 2) 1))) (or (not (= .cse0 .cse1)) (= (+ (select .cse2 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| (store (store .cse2 |c_ULTIMATE.start_main_~a~0#1.offset| .cse0) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_799)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|)) .cse1)))))) is different from false [2022-11-16 11:22:36,710 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_789 (Array Int Int)) (v_arrayElimArr_3 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_799 Int)) (let ((.cse1 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) 8 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_789) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_3))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse3 (+ (* c_~N~0 2) 1)) (.cse2 (+ (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_3 |ULTIMATE.start_main_~#sum~0#1.offset|)))) (or (= (+ (select .cse0 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (select (select (store .cse1 |c_ULTIMATE.start_main_~a~0#1.base| (store (store .cse0 |c_ULTIMATE.start_main_~a~0#1.offset| .cse2) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_799)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|)) .cse3) (not (= .cse3 .cse2))))))) is different from false [2022-11-16 11:22:36,743 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_783 Int) (v_ArrVal_789 (Array Int Int)) (v_arrayElimArr_3 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_799 Int)) (let ((.cse1 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse4 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse4 |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_783) (+ .cse4 8 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_789) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_3))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse2 (+ (select v_arrayElimArr_3 |ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|))) (.cse3 (+ (* c_~N~0 2) 1))) (or (= (+ (select .cse0 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (select (select (store .cse1 |c_ULTIMATE.start_main_~a~0#1.base| (store (store .cse0 |c_ULTIMATE.start_main_~a~0#1.offset| .cse2) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_799)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|)) .cse3) (not (= .cse2 .cse3))))))) is different from false [2022-11-16 11:22:36,811 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_783 Int) (v_ArrVal_789 (Array Int Int)) (v_arrayElimArr_3 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_799 Int)) (let ((.cse1 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse4 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse4 8 |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_783) (+ .cse4 16 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_789) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_3))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse2 (+ (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_3 |ULTIMATE.start_main_~#sum~0#1.offset|))) (.cse3 (+ (* c_~N~0 2) 1))) (or (= (+ (select .cse0 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (select (select (store .cse1 |c_ULTIMATE.start_main_~a~0#1.base| (store (store .cse0 |c_ULTIMATE.start_main_~a~0#1.offset| .cse2) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_799)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|)) .cse3) (not (= .cse2 .cse3))))))) is different from false [2022-11-16 11:22:36,841 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:22:36,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 227 treesize of output 125 [2022-11-16 11:22:36,864 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 729 treesize of output 705 [2022-11-16 11:22:36,992 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:22:36,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1047 treesize of output 1027 [2022-11-16 11:22:37,067 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:22:37,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 1206 treesize of output 1068 [2022-11-16 11:22:37,137 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:22:37,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 695 treesize of output 661 [2022-11-16 11:23:04,211 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 14 trivial. 22 not checked. [2022-11-16 11:23:04,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49614850] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:23:04,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:23:04,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 21, 23] total 72 [2022-11-16 11:23:04,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890510430] [2022-11-16 11:23:04,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:23:04,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-11-16 11:23:04,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:04,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-11-16 11:23:04,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=3889, Unknown=7, NotChecked=924, Total=5112 [2022-11-16 11:23:04,214 INFO L87 Difference]: Start difference. First operand 104 states and 110 transitions. Second operand has 72 states, 72 states have (on average 1.9861111111111112) internal successors, (143), 72 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:12,589 WARN L233 SmtUtils]: Spent 5.71s on a formula simplification. DAG size of input: 109 DAG size of output: 65 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:23:41,980 WARN L233 SmtUtils]: Spent 8.02s on a formula simplification. DAG size of input: 88 DAG size of output: 57 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:23:48,802 WARN L233 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 70 DAG size of output: 39 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:24:00,139 WARN L233 SmtUtils]: Spent 5.32s on a formula simplification. DAG size of input: 115 DAG size of output: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:24:09,354 WARN L233 SmtUtils]: Spent 8.98s on a formula simplification. DAG size of input: 109 DAG size of output: 44 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:24:17,584 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 90 DAG size of output: 56 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:24:24,579 WARN L233 SmtUtils]: Spent 6.61s on a formula simplification. DAG size of input: 100 DAG size of output: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:24:36,913 WARN L233 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 84 DAG size of output: 46 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:24:52,270 WARN L233 SmtUtils]: Spent 15.18s on a formula simplification. DAG size of input: 136 DAG size of output: 53 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:25:02,949 WARN L233 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 78 DAG size of output: 54 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:25:13,174 WARN L233 SmtUtils]: Spent 10.02s on a formula simplification. DAG size of input: 85 DAG size of output: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:25:22,524 WARN L233 SmtUtils]: Spent 9.01s on a formula simplification. DAG size of input: 73 DAG size of output: 39 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:25:42,446 WARN L233 SmtUtils]: Spent 19.15s on a formula simplification. DAG size of input: 110 DAG size of output: 65 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:25:52,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:25:52,485 INFO L93 Difference]: Finished difference Result 131 states and 142 transitions. [2022-11-16 11:25:52,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-11-16 11:25:52,486 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.9861111111111112) internal successors, (143), 72 states have internal predecessors, (143), 0 states have call successors, (0), 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 56 [2022-11-16 11:25:52,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:25:52,487 INFO L225 Difference]: With dead ends: 131 [2022-11-16 11:25:52,487 INFO L226 Difference]: Without dead ends: 86 [2022-11-16 11:25:52,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 88 SyntacticMatches, 22 SemanticMatches, 137 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 5825 ImplicationChecksByTransitivity, 173.6s TimeCoverageRelationStatistics Valid=1654, Invalid=15638, Unknown=28, NotChecked=1862, Total=19182 [2022-11-16 11:25:52,491 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 250 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 1561 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 2839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 1561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1022 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:25:52,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 327 Invalid, 2839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 1561 Invalid, 0 Unknown, 1022 Unchecked, 2.2s Time] [2022-11-16 11:25:52,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-16 11:25:52,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 76. [2022-11-16 11:25:52,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.1333333333333333) internal successors, (85), 75 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:52,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2022-11-16 11:25:52,519 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 56 [2022-11-16 11:25:52,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:25:52,519 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2022-11-16 11:25:52,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.9861111111111112) internal successors, (143), 72 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:52,520 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2022-11-16 11:25:52,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-16 11:25:52,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:25:52,520 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:52,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:25:52,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:52,721 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:25:52,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:52,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1839482760, now seen corresponding path program 9 times [2022-11-16 11:25:52,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:52,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014969290] [2022-11-16 11:25:52,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:52,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:03,883 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 2 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:03,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:03,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014969290] [2022-11-16 11:26:03,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014969290] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:26:03,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67265239] [2022-11-16 11:26:03,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:26:03,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:03,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:03,888 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:26:03,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6be8776-5e10-4426-978b-51830f720898/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:26:04,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-16 11:26:04,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:26:04,207 WARN L261 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 147 conjunts are in the unsatisfiable core [2022-11-16 11:26:04,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:04,237 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 [2022-11-16 11:26:04,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:04,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-16 11:26:04,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:04,441 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 [2022-11-16 11:26:04,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:04,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:04,780 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 28 treesize of output 30 [2022-11-16 11:26:04,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:04,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:05,019 INFO L321 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-11-16 11:26:05,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 44 [2022-11-16 11:26:05,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:05,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:05,450 INFO L321 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2022-11-16 11:26:05,450 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 4 case distinctions, treesize of input 51 treesize of output 59 [2022-11-16 11:26:06,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:06,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:06,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:06,515 INFO L321 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2022-11-16 11:26:06,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 73 [2022-11-16 11:26:07,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:07,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:07,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:07,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:07,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:07,140 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-16 11:26:07,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 81 [2022-11-16 11:26:07,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:07,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:07,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:07,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:07,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:07,598 INFO L321 Elim1Store]: treesize reduction 72, result has 19.1 percent of original size [2022-11-16 11:26:07,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 78 treesize of output 95 [2022-11-16 11:26:08,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:08,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:08,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:08,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:08,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:08,314 INFO L321 Elim1Store]: treesize reduction 92, result has 15.6 percent of original size [2022-11-16 11:26:08,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 8 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 7 case distinctions, treesize of input 90 treesize of output 110 [2022-11-16 11:26:09,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:09,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:09,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:09,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:26:09,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:09,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:09,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:09,970 INFO L321 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2022-11-16 11:26:09,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 9 disjoint index pairs (out of 45 index pairs), introduced 9 new quantified variables, introduced 7 case distinctions, treesize of input 111 treesize of output 119 [2022-11-16 11:26:10,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:10,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:10,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:10,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:10,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:10,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:10,773 INFO L321 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2022-11-16 11:26:10,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 9 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 6 case distinctions, treesize of input 109 treesize of output 115 [2022-11-16 11:26:11,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:11,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:11,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:11,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:11,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:11,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:11,308 INFO L321 Elim1Store]: treesize reduction 106, result has 0.9 percent of original size [2022-11-16 11:26:11,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 9 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 10 case distinctions, treesize of input 117 treesize of output 128 [2022-11-16 11:26:12,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:12,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:12,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:12,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:12,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:12,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:12,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:12,381 INFO L321 Elim1Store]: treesize reduction 138, result has 0.7 percent of original size [2022-11-16 11:26:12,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 11 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 13 case distinctions, treesize of input 122 treesize of output 140 [2022-11-16 11:26:14,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:14,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:14,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:14,394 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:26:14,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:14,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:14,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:14,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:14,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:26:14,406 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:26:14,416 INFO L321 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2022-11-16 11:26:14,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 9 disjoint index pairs (out of 66 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 131 treesize of output 122 [2022-11-16 11:26:15,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:15,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:15,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:15,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:15,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:15,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:15,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:15,479 INFO L321 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2022-11-16 11:26:15,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 9 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 120 [2022-11-16 11:26:16,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:16,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:16,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:16,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:16,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:16,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:16,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:16,107 INFO L321 Elim1Store]: treesize reduction 106, result has 0.9 percent of original size [2022-11-16 11:26:16,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 9 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 10 case distinctions, treesize of input 117 treesize of output 128 [2022-11-16 11:26:17,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:17,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:17,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:17,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:17,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:17,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:17,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:17,217 INFO L321 Elim1Store]: treesize reduction 138, result has 0.7 percent of original size [2022-11-16 11:26:17,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 11 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 13 case distinctions, treesize of input 119 treesize of output 133 [2022-11-16 11:26:19,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:19,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:19,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:19,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:19,538 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:26:19,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:19,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:19,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:19,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:19,549 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:26:19,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:19,559 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:26:19,601 INFO L321 Elim1Store]: treesize reduction 90, result has 19.6 percent of original size [2022-11-16 11:26:19,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 9 disjoint index pairs (out of 66 index pairs), introduced 9 new quantified variables, introduced 11 case distinctions, treesize of input 127 treesize of output 127 [2022-11-16 11:26:20,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:20,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:20,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:20,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:20,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:20,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:20,690 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:26:20,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:26:20,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:20,697 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:26:20,855 INFO L321 Elim1Store]: treesize reduction 368, result has 18.4 percent of original size [2022-11-16 11:26:20,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 7 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 109 treesize of output 155 [2022-11-16 11:26:21,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:21,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:21,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:21,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:21,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:22,066 INFO L321 Elim1Store]: treesize reduction 336, result has 18.4 percent of original size [2022-11-16 11:26:22,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 113 treesize of output 165 [2022-11-16 11:26:23,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:23,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:23,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:23,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:23,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:23,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:23,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:23,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:23,867 INFO L321 Elim1Store]: treesize reduction 403, result has 21.0 percent of original size [2022-11-16 11:26:23,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 27 case distinctions, treesize of input 139 treesize of output 206 [2022-11-16 11:26:26,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:26,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:26,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:26,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:26,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:26,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:26,989 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 11:26:26,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 81 treesize of output 47 [2022-11-16 11:26:27,255 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:27,255 INFO L328 TraceCheckSpWp]: Computing backward predicates...