./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/eqn1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/eqn1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0 --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 14bc2dbf7c29b1d0f6a0a1f7aa323adbc9855e56ce7f667c86a31ecee97dcbe0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:42:17,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:42:17,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:42:17,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:42:17,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:42:17,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:42:17,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:42:17,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:42:17,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:42:17,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:42:17,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:42:17,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:42:17,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:42:17,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:42:17,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:42:17,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:42:17,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:42:17,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:42:17,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:42:17,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:42:17,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:42:17,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:42:17,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:42:17,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:42:17,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:42:17,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:42:17,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:42:17,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:42:17,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:42:17,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:42:17,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:42:17,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:42:17,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:42:17,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:42:17,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:42:17,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:42:17,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:42:17,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:42:17,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:42:17,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:42:17,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:42:17,496 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:42:17,530 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:42:17,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:42:17,531 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:42:17,531 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:42:17,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:42:17,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:42:17,533 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:42:17,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:42:17,534 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:42:17,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:42:17,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:42:17,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:42:17,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:42:17,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:42:17,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:42:17,535 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:42:17,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:42:17,536 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:42:17,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:42:17,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:42:17,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:42:17,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:42:17,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:42:17,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:42:17,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:42:17,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:42:17,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:42:17,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:42:17,539 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:42:17,539 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:42:17,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:42:17,539 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:42:17,540 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_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14bc2dbf7c29b1d0f6a0a1f7aa323adbc9855e56ce7f667c86a31ecee97dcbe0 [2021-11-22 15:42:17,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:42:17,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:42:17,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:42:17,800 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:42:17,800 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:42:17,802 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/array-fpi/eqn1.c [2021-11-22 15:42:17,869 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/data/553f616bf/337cec9841bc4e59b29e1bdbac21902d/FLAG1179a9ef2 [2021-11-22 15:42:18,333 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:42:18,333 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/sv-benchmarks/c/array-fpi/eqn1.c [2021-11-22 15:42:18,339 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/data/553f616bf/337cec9841bc4e59b29e1bdbac21902d/FLAG1179a9ef2 [2021-11-22 15:42:18,707 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/data/553f616bf/337cec9841bc4e59b29e1bdbac21902d [2021-11-22 15:42:18,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:42:18,711 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:42:18,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:42:18,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:42:18,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:42:18,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:42:18" (1/1) ... [2021-11-22 15:42:18,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43bd771e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:18, skipping insertion in model container [2021-11-22 15:42:18,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:42:18" (1/1) ... [2021-11-22 15:42:18,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:42:18,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:42:18,918 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/sv-benchmarks/c/array-fpi/eqn1.c[587,600] [2021-11-22 15:42:18,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:42:18,947 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:42:18,961 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/sv-benchmarks/c/array-fpi/eqn1.c[587,600] [2021-11-22 15:42:18,971 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:42:18,985 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:42:18,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:18 WrapperNode [2021-11-22 15:42:18,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:42:18,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:42:18,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:42:18,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:42:18,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:18" (1/1) ... [2021-11-22 15:42:19,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:18" (1/1) ... [2021-11-22 15:42:19,030 INFO L137 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2021-11-22 15:42:19,030 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:42:19,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:42:19,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:42:19,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:42:19,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:18" (1/1) ... [2021-11-22 15:42:19,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:18" (1/1) ... [2021-11-22 15:42:19,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:18" (1/1) ... [2021-11-22 15:42:19,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:18" (1/1) ... [2021-11-22 15:42:19,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:18" (1/1) ... [2021-11-22 15:42:19,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:18" (1/1) ... [2021-11-22 15:42:19,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:18" (1/1) ... [2021-11-22 15:42:19,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:42:19,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:42:19,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:42:19,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:42:19,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:18" (1/1) ... [2021-11-22 15:42:19,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:42:19,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:42:19,123 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:42:19,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:42:19,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:42:19,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:42:19,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 15:42:19,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 15:42:19,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:42:19,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:42:19,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 15:42:19,255 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:42:19,257 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:42:19,428 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:42:19,434 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:42:19,435 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-22 15:42:19,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:42:19 BoogieIcfgContainer [2021-11-22 15:42:19,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:42:19,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:42:19,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:42:19,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:42:19,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:42:18" (1/3) ... [2021-11-22 15:42:19,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45394317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:42:19, skipping insertion in model container [2021-11-22 15:42:19,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:18" (2/3) ... [2021-11-22 15:42:19,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45394317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:42:19, skipping insertion in model container [2021-11-22 15:42:19,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:42:19" (3/3) ... [2021-11-22 15:42:19,471 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn1.c [2021-11-22 15:42:19,476 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:42:19,477 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 15:42:19,574 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:42:19,581 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 15:42:19,582 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 15:42:19,600 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:19,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 15:42:19,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:19,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:19,611 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:42:19,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:19,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2021-11-22 15:42:19,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:19,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115325434] [2021-11-22 15:42:19,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:19,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:19,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:19,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:19,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:19,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115325434] [2021-11-22 15:42:19,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115325434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:19,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:19,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:42:19,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384273995] [2021-11-22 15:42:19,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:19,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 15:42:19,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:19,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 15:42:19,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:42:19,800 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:19,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:19,812 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2021-11-22 15:42:19,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 15:42:19,814 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-22 15:42:19,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:19,822 INFO L225 Difference]: With dead ends: 38 [2021-11-22 15:42:19,822 INFO L226 Difference]: Without dead ends: 17 [2021-11-22 15:42:19,825 INFO L932 BasicCegarLoop]: 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 [2021-11-22 15:42:19,829 INFO L933 BasicCegarLoop]: 24 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, 24 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 [2021-11-22 15:42:19,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:42:19,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-22 15:42:19,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-22 15:42:19,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:19,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-11-22 15:42:19,861 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2021-11-22 15:42:19,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:19,861 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-11-22 15:42:19,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:19,861 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-11-22 15:42:19,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 15:42:19,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:19,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:19,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:42:19,863 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:42:19,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:19,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2021-11-22 15:42:19,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:19,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062305003] [2021-11-22 15:42:19,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:19,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:19,892 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:42:19,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [144541851] [2021-11-22 15:42:19,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:19,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:42:19,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:42:19,910 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:42:19,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:42:20,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:20,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 15:42:20,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:42:20,108 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-22 15:42:20,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-11-22 15:42:20,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:20,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:42:20,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:20,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062305003] [2021-11-22 15:42:20,248 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:42:20,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144541851] [2021-11-22 15:42:20,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144541851] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:20,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:20,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:42:20,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763154134] [2021-11-22 15:42:20,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:20,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:42:20,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:20,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:42:20,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:42:20,252 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:20,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:20,331 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-11-22 15:42:20,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:42:20,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-22 15:42:20,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:20,333 INFO L225 Difference]: With dead ends: 34 [2021-11-22 15:42:20,333 INFO L226 Difference]: Without dead ends: 32 [2021-11-22 15:42:20,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:42:20,335 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:20,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 56 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:42:20,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-22 15:42:20,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2021-11-22 15:42:20,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:20,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-11-22 15:42:20,348 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2021-11-22 15:42:20,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:20,353 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-11-22 15:42:20,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:20,354 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-11-22 15:42:20,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-22 15:42:20,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:20,355 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:20,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:42:20,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:42:20,562 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:42:20,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:20,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1755224028, now seen corresponding path program 1 times [2021-11-22 15:42:20,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:20,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738307135] [2021-11-22 15:42:20,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:20,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:20,594 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:42:20,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1379305164] [2021-11-22 15:42:20,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:20,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:42:20,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:42:20,604 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:42:20,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 15:42:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:20,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 15:42:20,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:42:20,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:20,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:42:20,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:20,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738307135] [2021-11-22 15:42:20,740 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:42:20,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379305164] [2021-11-22 15:42:20,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379305164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:20,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:20,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:42:20,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230363658] [2021-11-22 15:42:20,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:20,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:42:20,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:20,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:42:20,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:42:20,742 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:20,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:20,829 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2021-11-22 15:42:20,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:42:20,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-22 15:42:20,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:20,831 INFO L225 Difference]: With dead ends: 49 [2021-11-22 15:42:20,831 INFO L226 Difference]: Without dead ends: 40 [2021-11-22 15:42:20,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:42:20,833 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 26 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:20,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:42:20,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-22 15:42:20,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 23. [2021-11-22 15:42:20,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:20,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-11-22 15:42:20,839 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2021-11-22 15:42:20,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:20,840 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-11-22 15:42:20,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:20,840 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-11-22 15:42:20,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-22 15:42:20,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:20,841 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:20,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:42:21,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-22 15:42:21,070 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:42:21,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:21,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1842440164, now seen corresponding path program 1 times [2021-11-22 15:42:21,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:21,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687382741] [2021-11-22 15:42:21,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:21,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:21,095 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:42:21,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [730360371] [2021-11-22 15:42:21,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:21,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:42:21,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:42:21,102 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:42:21,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 15:42:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:21,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 15:42:21,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:42:21,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:21,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:42:21,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:21,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:21,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687382741] [2021-11-22 15:42:21,269 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:42:21,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730360371] [2021-11-22 15:42:21,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730360371] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:42:21,269 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:42:21,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-11-22 15:42:21,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455789022] [2021-11-22 15:42:21,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:42:21,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:42:21,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:21,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:42:21,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:42:21,271 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:21,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:21,395 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2021-11-22 15:42:21,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 15:42:21,396 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-22 15:42:21,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:21,397 INFO L225 Difference]: With dead ends: 44 [2021-11-22 15:42:21,397 INFO L226 Difference]: Without dead ends: 37 [2021-11-22 15:42:21,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:42:21,398 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 23 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:21,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 46 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:42:21,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-22 15:42:21,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2021-11-22 15:42:21,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:21,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-11-22 15:42:21,422 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2021-11-22 15:42:21,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:21,422 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-11-22 15:42:21,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:21,423 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-11-22 15:42:21,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-22 15:42:21,423 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:21,423 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:21,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 15:42:21,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:42:21,624 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:42:21,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:21,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1667884396, now seen corresponding path program 1 times [2021-11-22 15:42:21,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:21,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277147981] [2021-11-22 15:42:21,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:21,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:21,647 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:42:21,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [309412261] [2021-11-22 15:42:21,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:21,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:42:21,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:42:21,667 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:42:21,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 15:42:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:21,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:42:21,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:42:21,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:21,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:42:21,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:21,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277147981] [2021-11-22 15:42:21,817 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:42:21,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309412261] [2021-11-22 15:42:21,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309412261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:21,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:21,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 15:42:21,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089017492] [2021-11-22 15:42:21,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:21,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:42:21,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:21,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:42:21,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:42:21,821 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:21,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:21,934 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2021-11-22 15:42:21,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 15:42:21,935 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-11-22 15:42:21,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:21,936 INFO L225 Difference]: With dead ends: 41 [2021-11-22 15:42:21,936 INFO L226 Difference]: Without dead ends: 27 [2021-11-22 15:42:21,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:42:21,939 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:21,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 32 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:42:21,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-22 15:42:21,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2021-11-22 15:42:21,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:21,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-22 15:42:21,946 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2021-11-22 15:42:21,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:21,946 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-22 15:42:21,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:21,947 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-22 15:42:21,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-22 15:42:21,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:21,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:21,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-22 15:42:22,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:42:22,158 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:42:22,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:22,158 INFO L85 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times [2021-11-22 15:42:22,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:22,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066998871] [2021-11-22 15:42:22,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:22,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:22,180 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:42:22,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1057312953] [2021-11-22 15:42:22,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:22,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:42:22,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:42:22,182 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:42:22,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 15:42:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:22,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-22 15:42:22,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:42:22,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-22 15:42:22,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-22 15:42:22,360 INFO L354 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2021-11-22 15:42:22,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2021-11-22 15:42:22,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:22,504 INFO L354 Elim1Store]: treesize reduction 102, result has 14.3 percent of original size [2021-11-22 15:42:22,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 51 treesize of output 48 [2021-11-22 15:42:22,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:22,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:42:23,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:23,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:23,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066998871] [2021-11-22 15:42:23,523 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:42:23,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057312953] [2021-11-22 15:42:23,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057312953] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:42:23,526 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:42:23,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2021-11-22 15:42:23,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38204508] [2021-11-22 15:42:23,527 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:42:23,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 15:42:23,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:23,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 15:42:23,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-22 15:42:23,529 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:25,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:25,085 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2021-11-22 15:42:25,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 15:42:25,085 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-22 15:42:25,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:25,086 INFO L225 Difference]: With dead ends: 42 [2021-11-22 15:42:25,086 INFO L226 Difference]: Without dead ends: 40 [2021-11-22 15:42:25,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-11-22 15:42:25,088 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:25,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 67 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 75 Invalid, 0 Unknown, 19 Unchecked, 0.4s Time] [2021-11-22 15:42:25,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-22 15:42:25,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2021-11-22 15:42:25,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 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) [2021-11-22 15:42:25,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2021-11-22 15:42:25,095 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 16 [2021-11-22 15:42:25,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:25,095 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2021-11-22 15:42:25,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:25,096 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2021-11-22 15:42:25,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 15:42:25,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:25,097 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:25,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-22 15:42:25,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-22 15:42:25,314 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:42:25,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:25,314 INFO L85 PathProgramCache]: Analyzing trace with hash 798963152, now seen corresponding path program 1 times [2021-11-22 15:42:25,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:25,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006719349] [2021-11-22 15:42:25,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:25,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:25,354 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:42:25,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [694943292] [2021-11-22 15:42:25,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:25,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:42:25,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:42:25,362 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:42:25,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 15:42:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:25,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-22 15:42:25,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:42:25,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-22 15:42:25,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-22 15:42:25,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:25,526 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-22 15:42:25,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2021-11-22 15:42:25,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:42:25,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:25,653 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-22 15:42:25,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 44 [2021-11-22 15:42:25,897 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-11-22 15:42:25,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 40 [2021-11-22 15:42:25,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:25,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:42:26,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:26,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:26,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006719349] [2021-11-22 15:42:26,979 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:42:26,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694943292] [2021-11-22 15:42:26,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694943292] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:42:26,979 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:42:26,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-11-22 15:42:26,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677092037] [2021-11-22 15:42:26,980 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:42:26,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-22 15:42:26,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:26,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-22 15:42:26,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-22 15:42:26,982 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:27,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:27,474 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2021-11-22 15:42:27,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 15:42:27,475 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-22 15:42:27,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:27,477 INFO L225 Difference]: With dead ends: 45 [2021-11-22 15:42:27,477 INFO L226 Difference]: Without dead ends: 43 [2021-11-22 15:42:27,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-11-22 15:42:27,478 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:27,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 66 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 37 Invalid, 0 Unknown, 37 Unchecked, 0.2s Time] [2021-11-22 15:42:27,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-22 15:42:27,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2021-11-22 15:42:27,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:27,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2021-11-22 15:42:27,486 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 20 [2021-11-22 15:42:27,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:27,487 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2021-11-22 15:42:27,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:27,487 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2021-11-22 15:42:27,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 15:42:27,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:27,488 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:27,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-22 15:42:27,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-22 15:42:27,714 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:42:27,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:27,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1334592554, now seen corresponding path program 2 times [2021-11-22 15:42:27,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:27,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393428981] [2021-11-22 15:42:27,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:27,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:27,732 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:42:27,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [978068159] [2021-11-22 15:42:27,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:42:27,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:42:27,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:42:27,750 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:42:27,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-22 15:42:27,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:42:27,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:42:27,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 15:42:27,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:42:27,889 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 15:42:27,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:42:27,959 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 15:42:27,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:27,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393428981] [2021-11-22 15:42:27,960 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:42:27,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978068159] [2021-11-22 15:42:27,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978068159] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:42:27,960 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:42:27,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-22 15:42:27,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714088578] [2021-11-22 15:42:27,961 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:42:27,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:42:27,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:27,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:42:27,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:42:27,964 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:28,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:28,100 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2021-11-22 15:42:28,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 15:42:28,102 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-22 15:42:28,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:28,103 INFO L225 Difference]: With dead ends: 76 [2021-11-22 15:42:28,103 INFO L226 Difference]: Without dead ends: 62 [2021-11-22 15:42:28,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-11-22 15:42:28,104 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 45 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:28,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 49 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:42:28,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-22 15:42:28,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 38. [2021-11-22 15:42:28,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.162162162162162) internal successors, (43), 37 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:28,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2021-11-22 15:42:28,117 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 20 [2021-11-22 15:42:28,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:28,118 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2021-11-22 15:42:28,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:28,118 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2021-11-22 15:42:28,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 15:42:28,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:28,120 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:28,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-22 15:42:28,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:42:28,340 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:42:28,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:28,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1786143722, now seen corresponding path program 3 times [2021-11-22 15:42:28,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:28,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714305866] [2021-11-22 15:42:28,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:28,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:28,364 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:42:28,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360606904] [2021-11-22 15:42:28,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 15:42:28,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:42:28,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:42:28,365 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:42:28,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-22 15:42:28,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-22 15:42:28,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:42:28,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-22 15:42:28,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:42:28,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-22 15:42:28,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-22 15:42:28,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:28,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:28,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:28,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:28,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:28,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:28,630 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:42:28,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:28,639 INFO L354 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2021-11-22 15:42:28,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 186 treesize of output 304 [2021-11-22 15:42:28,687 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 15:42:28,717 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:42:28,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:28,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:28,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:28,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:28,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 60 [2021-11-22 15:42:28,760 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:42:28,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:28,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:28,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:28,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:28,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 60 [2021-11-22 15:42:28,776 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:42:28,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:28,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:28,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:28,783 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-22 15:42:28,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 106 treesize of output 58 [2021-11-22 15:42:28,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:28,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:28,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:28,887 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-22 15:42:28,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 51 treesize of output 46 [2021-11-22 15:42:29,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:42:29,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:42:29,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:42:29,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:42:29,100 INFO L354 Elim1Store]: treesize reduction 86, result has 18.1 percent of original size [2021-11-22 15:42:29,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 262 treesize of output 508 [2021-11-22 15:42:29,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:42:29,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:42:29,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 205 treesize of output 124 [2021-11-22 15:42:29,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:42:29,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:42:29,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 293 treesize of output 173 [2021-11-22 15:42:29,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:42:29,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:42:29,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 275 treesize of output 135 [2021-11-22 15:42:29,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,550 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:42:29,550 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:42:29,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:42:29,561 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-22 15:42:29,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 case distinctions, treesize of input 79 treesize of output 68 [2021-11-22 15:42:29,762 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:29,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:42:36,807 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:36,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:36,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714305866] [2021-11-22 15:42:36,808 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:42:36,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360606904] [2021-11-22 15:42:36,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360606904] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:42:36,808 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:42:36,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2021-11-22 15:42:36,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414858902] [2021-11-22 15:42:36,809 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:42:36,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-22 15:42:36,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:36,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-22 15:42:36,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-11-22 15:42:36,811 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:05,134 WARN L227 SmtUtils]: Spent 26.19s on a formula simplification. DAG size of input: 156 DAG size of output: 130 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:43:07,305 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 15:44:18,955 WARN L227 SmtUtils]: Spent 1.12m on a formula simplification. DAG size of input: 164 DAG size of output: 129 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:47:02,286 WARN L227 SmtUtils]: Spent 2.62m on a formula simplification. DAG size of input: 166 DAG size of output: 131 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:47:10,032 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 15:47:14,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:47:14,629 INFO L93 Difference]: Finished difference Result 93 states and 104 transitions. [2021-11-22 15:47:14,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-22 15:47:14,629 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-22 15:47:14,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:47:14,631 INFO L225 Difference]: With dead ends: 93 [2021-11-22 15:47:14,631 INFO L226 Difference]: Without dead ends: 91 [2021-11-22 15:47:14,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 267.3s TimeCoverageRelationStatistics Valid=335, Invalid=1071, Unknown=0, NotChecked=0, Total=1406 [2021-11-22 15:47:14,633 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 87 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 67 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2021-11-22 15:47:14,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 150 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 237 Invalid, 1 Unknown, 41 Unchecked, 15.8s Time] [2021-11-22 15:47:14,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-11-22 15:47:14,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 49. [2021-11-22 15:47:14,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 48 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:47:14,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2021-11-22 15:47:14,642 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 20 [2021-11-22 15:47:14,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:47:14,643 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2021-11-22 15:47:14,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:47:14,643 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2021-11-22 15:47:14,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-22 15:47:14,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:47:14,645 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:47:14,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-22 15:47:14,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:47:14,862 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:47:14,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:47:14,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1197174726, now seen corresponding path program 2 times [2021-11-22 15:47:14,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:47:14,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356112665] [2021-11-22 15:47:14,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:47:14,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:47:14,872 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:47:14,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [565900196] [2021-11-22 15:47:14,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:47:14,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:47:14,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:47:14,890 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:47:14,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-22 15:47:14,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:47:14,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:47:14,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 15:47:14,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:47:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 15:47:15,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:47:15,144 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 15:47:15,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:47:15,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356112665] [2021-11-22 15:47:15,144 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:47:15,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565900196] [2021-11-22 15:47:15,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565900196] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:47:15,145 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:47:15,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-11-22 15:47:15,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806162820] [2021-11-22 15:47:15,145 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:47:15,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 15:47:15,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:47:15,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 15:47:15,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:47:15,147 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:47:15,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:47:15,331 INFO L93 Difference]: Finished difference Result 93 states and 104 transitions. [2021-11-22 15:47:15,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 15:47:15,332 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-22 15:47:15,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:47:15,333 INFO L225 Difference]: With dead ends: 93 [2021-11-22 15:47:15,334 INFO L226 Difference]: Without dead ends: 72 [2021-11-22 15:47:15,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-11-22 15:47:15,335 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 37 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:47:15,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 74 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:47:15,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-22 15:47:15,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 54. [2021-11-22 15:47:15,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 53 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:47:15,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2021-11-22 15:47:15,345 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 24 [2021-11-22 15:47:15,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:47:15,345 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2021-11-22 15:47:15,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:47:15,346 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2021-11-22 15:47:15,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-22 15:47:15,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:47:15,347 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:47:15,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-22 15:47:15,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-22 15:47:15,561 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:47:15,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:47:15,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1232945932, now seen corresponding path program 3 times [2021-11-22 15:47:15,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:47:15,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268820458] [2021-11-22 15:47:15,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:47:15,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:47:15,595 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:47:15,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [258630190] [2021-11-22 15:47:15,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 15:47:15,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:47:15,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:47:15,603 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:47:15,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-22 15:47:15,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-22 15:47:15,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:47:15,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-22 15:47:15,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:47:15,850 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-22 15:47:15,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-11-22 15:47:15,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-22 15:47:15,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:15,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:15,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:15,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:15,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:15,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:15,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:47:15,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:15,928 INFO L354 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2021-11-22 15:47:15,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 186 treesize of output 304 [2021-11-22 15:47:15,971 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 15:47:16,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:47:16,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 64 [2021-11-22 15:47:16,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:47:16,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 110 [2021-11-22 15:47:16,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,068 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-22 15:47:16,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 51 [2021-11-22 15:47:16,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,148 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-22 15:47:16,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 51 treesize of output 46 [2021-11-22 15:47:16,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:47:16,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:47:16,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:47:16,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:47:16,401 INFO L354 Elim1Store]: treesize reduction 86, result has 18.1 percent of original size [2021-11-22 15:47:16,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 270 treesize of output 510 [2021-11-22 15:47:16,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:47:16,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:47:16,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 217 treesize of output 137 [2021-11-22 15:47:16,579 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 15:47:16,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:47:16,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:47:16,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 321 treesize of output 194 [2021-11-22 15:47:16,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:47:16,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,785 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:47:16,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:47:16,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,798 INFO L354 Elim1Store]: treesize reduction 25, result has 10.7 percent of original size [2021-11-22 15:47:16,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 11 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 30 case distinctions, treesize of input 214 treesize of output 97 [2021-11-22 15:47:16,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:47:16,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:47:16,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:47:16,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:16,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:47:17,035 INFO L354 Elim1Store]: treesize reduction 71, result has 17.4 percent of original size [2021-11-22 15:47:17,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 277 treesize of output 487 [2021-11-22 15:47:17,123 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 15:47:17,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,369 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:47:17,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 13 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 274 treesize of output 167 [2021-11-22 15:47:17,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 13 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 240 treesize of output 138 [2021-11-22 15:47:17,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:47:17,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:47:17,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:47:17,504 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-22 15:47:17,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 11 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 276 treesize of output 125 [2021-11-22 15:47:17,962 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-11-22 15:47:17,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 99 treesize of output 51 [2021-11-22 15:47:17,999 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:47:17,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:48:05,284 WARN L227 SmtUtils]: Spent 19.94s on a formula simplification that was a NOOP. DAG size: 151 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:48:05,298 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:48:05,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:48:05,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268820458] [2021-11-22 15:48:05,299 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:48:05,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258630190] [2021-11-22 15:48:05,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258630190] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:48:05,299 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:48:05,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2021-11-22 15:48:05,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653026394] [2021-11-22 15:48:05,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:48:05,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-22 15:48:05,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:48:05,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-22 15:48:05,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=555, Unknown=0, NotChecked=0, Total=702 [2021-11-22 15:48:05,302 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:48:19,643 WARN L227 SmtUtils]: Spent 10.00s on a formula simplification. DAG size of input: 303 DAG size of output: 103 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:53:18,979 WARN L227 SmtUtils]: Spent 4.69m on a formula simplification. DAG size of input: 304 DAG size of output: 288 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:53:20,581 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 15:53:22,458 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 15:53:34,912 WARN L227 SmtUtils]: Spent 7.26s on a formula simplification that was a NOOP. DAG size: 118 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:53:37,112 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 15:53:44,874 WARN L227 SmtUtils]: Spent 5.10s on a formula simplification that was a NOOP. DAG size: 122 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:53:52,624 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 15:54:00,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:54:00,321 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2021-11-22 15:54:00,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-22 15:54:00,322 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-22 15:54:00,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:54:00,323 INFO L225 Difference]: With dead ends: 81 [2021-11-22 15:54:00,323 INFO L226 Difference]: Without dead ends: 72 [2021-11-22 15:54:00,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 379.4s TimeCoverageRelationStatistics Valid=303, Invalid=1254, Unknown=3, NotChecked=0, Total=1560 [2021-11-22 15:54:00,325 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:54:00,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 80 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 174 Invalid, 0 Unknown, 18 Unchecked, 15.2s Time] [2021-11-22 15:54:00,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-22 15:54:00,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 67. [2021-11-22 15:54:00,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.196969696969697) internal successors, (79), 66 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:54:00,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 79 transitions. [2021-11-22 15:54:00,337 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 79 transitions. Word has length 24 [2021-11-22 15:54:00,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:54:00,338 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 79 transitions. [2021-11-22 15:54:00,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:54:00,338 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 79 transitions. [2021-11-22 15:54:00,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-22 15:54:00,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:54:00,340 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:54:00,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-22 15:54:00,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:54:00,547 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:54:00,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:54:00,548 INFO L85 PathProgramCache]: Analyzing trace with hash -900609774, now seen corresponding path program 4 times [2021-11-22 15:54:00,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:54:00,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792780909] [2021-11-22 15:54:00,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:54:00,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:54:00,598 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:54:00,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [116554269] [2021-11-22 15:54:00,606 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-22 15:54:00,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:54:00,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:54:00,607 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:54:00,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-22 15:54:00,662 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-22 15:54:00,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:54:00,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 15:54:00,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:54:00,812 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:54:00,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:54:00,952 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:54:00,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:54:00,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792780909] [2021-11-22 15:54:00,952 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:54:00,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116554269] [2021-11-22 15:54:00,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116554269] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:54:00,953 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:54:00,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-11-22 15:54:00,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782432001] [2021-11-22 15:54:00,953 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:54:00,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-22 15:54:00,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:54:00,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-22 15:54:00,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-11-22 15:54:00,955 INFO L87 Difference]: Start difference. First operand 67 states and 79 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 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) [2021-11-22 15:54:01,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:54:01,528 INFO L93 Difference]: Finished difference Result 168 states and 184 transitions. [2021-11-22 15:54:01,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-22 15:54:01,529 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-22 15:54:01,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:54:01,530 INFO L225 Difference]: With dead ends: 168 [2021-11-22 15:54:01,531 INFO L226 Difference]: Without dead ends: 125 [2021-11-22 15:54:01,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=308, Invalid=814, Unknown=0, NotChecked=0, Total=1122 [2021-11-22 15:54:01,532 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 147 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:54:01,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 112 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:54:01,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-22 15:54:01,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 64. [2021-11-22 15:54:01,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.1746031746031746) internal successors, (74), 63 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:54:01,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2021-11-22 15:54:01,543 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 24 [2021-11-22 15:54:01,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:54:01,544 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2021-11-22 15:54:01,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 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) [2021-11-22 15:54:01,544 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2021-11-22 15:54:01,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-22 15:54:01,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:54:01,546 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:54:01,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-22 15:54:01,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-22 15:54:01,750 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:54:01,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:54:01,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1049585326, now seen corresponding path program 5 times [2021-11-22 15:54:01,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:54:01,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442848069] [2021-11-22 15:54:01,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:54:01,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:54:01,777 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:54:01,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1514812495] [2021-11-22 15:54:01,778 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-22 15:54:01,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:54:01,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:54:01,779 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:54:01,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa4e0b90-0d40-4c53-be8f-1ec57e41e20b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-22 15:54:05,569 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-11-22 15:54:05,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:54:05,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-22 15:54:05,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:54:05,609 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-22 15:54:05,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-11-22 15:54:05,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-22 15:54:05,807 INFO L354 Elim1Store]: treesize reduction 683, result has 13.2 percent of original size [2021-11-22 15:54:05,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 186 treesize of output 255 [2021-11-22 15:54:05,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:05,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:05,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:05,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 49 [2021-11-22 15:54:05,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:05,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:05,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:05,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 51 [2021-11-22 15:54:05,943 INFO L354 Elim1Store]: treesize reduction 54, result has 1.8 percent of original size [2021-11-22 15:54:05,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 54 [2021-11-22 15:54:06,281 INFO L354 Elim1Store]: treesize reduction 634, result has 19.4 percent of original size [2021-11-22 15:54:06,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 215 treesize of output 309 [2021-11-22 15:54:06,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:06,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:06,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:06,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:06,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:06,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:06,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 28 [2021-11-22 15:54:06,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:06,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:06,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:06,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:06,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:06,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:06,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 38 [2021-11-22 15:54:06,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:06,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:06,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:06,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:06,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:06,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:06,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 33 [2021-11-22 15:54:06,717 INFO L354 Elim1Store]: treesize reduction 110, result has 19.1 percent of original size [2021-11-22 15:54:06,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 56 [2021-11-22 15:54:06,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:06,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:06,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:06,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:06,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:54:06,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:06,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:06,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:06,920 INFO L354 Elim1Store]: treesize reduction 235, result has 0.4 percent of original size [2021-11-22 15:54:06,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 9 select indices, 9 select index equivalence classes, 7 disjoint index pairs (out of 36 index pairs), introduced 12 new quantified variables, introduced 15 case distinctions, treesize of input 271 treesize of output 519 [2021-11-22 15:54:06,994 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 15:54:07,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:54:07,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 14 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 242 treesize of output 141 [2021-11-22 15:54:07,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:54:07,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 14 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 241 treesize of output 138 [2021-11-22 15:54:07,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 229 treesize of output 103 [2021-11-22 15:54:07,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:54:07,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,495 INFO L354 Elim1Store]: treesize reduction 235, result has 0.4 percent of original size [2021-11-22 15:54:07,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 10 select indices, 10 select index equivalence classes, 11 disjoint index pairs (out of 45 index pairs), introduced 13 new quantified variables, introduced 15 case distinctions, treesize of input 286 treesize of output 552 [2021-11-22 15:54:07,579 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 15:54:07,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:54:07,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 17 disjoint index pairs (out of 45 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 361 treesize of output 230 [2021-11-22 15:54:07,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:54:07,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 17 disjoint index pairs (out of 45 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 316 treesize of output 191 [2021-11-22 15:54:07,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,903 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:54:07,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:07,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 17 disjoint index pairs (out of 45 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 335 treesize of output 191 [2021-11-22 15:54:08,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:08,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:08,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:08,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:08,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:08,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:54:08,272 INFO L354 Elim1Store]: treesize reduction 382, result has 8.4 percent of original size [2021-11-22 15:54:08,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 25 case distinctions, treesize of input 126 treesize of output 103 [2021-11-22 15:54:08,736 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:54:08,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:55:28,904 WARN L227 SmtUtils]: Spent 18.99s on a formula simplification that was a NOOP. DAG size: 122 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:55:28,915 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:55:28,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:55:28,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442848069] [2021-11-22 15:55:28,915 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:55:28,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514812495] [2021-11-22 15:55:28,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514812495] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:55:28,915 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:55:28,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 28 [2021-11-22 15:55:28,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042102584] [2021-11-22 15:55:28,916 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:55:28,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-22 15:55:28,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:55:28,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-22 15:55:28,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=560, Unknown=1, NotChecked=0, Total=756 [2021-11-22 15:55:28,918 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand has 28 states, 28 states have (on average 1.5) internal successors, (42), 28 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:55:37,660 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse33 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse40 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse28 (* .cse40 8)) (.cse42 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse29 (* .cse33 8))) (let ((.cse30 (select .cse42 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse29 (- 34359738368)))) (.cse34 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse23 (select .cse42 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse29))) (.cse48 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse28 (- 34359738368))) (.cse50 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse28))) (let ((.cse41 (select .cse42 .cse50)) (.cse44 (select .cse42 .cse48)) (.cse49 (+ 2 .cse23)) (.cse47 (* .cse34 8)) (.cse51 (+ 2 .cse30)) (.cse38 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse35 (* .cse38 8)) (.cse26 (store .cse42 .cse50 .cse51)) (.cse27 (store .cse42 .cse48 .cse51)) (.cse37 (+ 4 .cse30)) (.cse39 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse47)) (.cse2 (store .cse42 .cse50 .cse49)) (.cse45 (+ 2 .cse44)) (.cse43 (+ .cse41 2)) (.cse1 (store .cse42 .cse48 .cse49)) (.cse36 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse47 (- 34359738368))) (.cse46 (+ .cse23 4))) (let ((.cse12 (store .cse1 .cse36 .cse46)) (.cse14 (store .cse42 .cse36 .cse43)) (.cse5 (store .cse42 .cse36 .cse45)) (.cse13 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse22 (store .cse2 .cse36 .cse46)) (.cse17 (store .cse2 .cse39 .cse46)) (.cse4 (< 2147483647 .cse33)) (.cse7 (store .cse42 .cse39 .cse45)) (.cse24 (+ .cse44 4)) (.cse15 (store .cse42 .cse39 .cse43)) (.cse25 (+ .cse41 4)) (.cse9 (store .cse27 .cse39 .cse37)) (.cse0 (<= .cse40 2147483647)) (.cse3 (< 2147483647 .cse40)) (.cse31 (store .cse26 .cse39 .cse37)) (.cse8 (< 2147483647 .cse34)) (.cse20 (<= .cse38 2147483647)) (.cse21 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse35 (- 34359738368))) (.cse16 (< 2147483647 .cse38)) (.cse10 (store .cse27 .cse36 .cse37)) (.cse18 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse35)) (.cse6 (<= .cse34 2147483647)) (.cse11 (<= .cse33 2147483647))) (and (or (and (or .cse0 (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse1) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse3)) .cse4) (or .cse0 (and (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse5) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse6) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse7) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse8))) (or .cse0 (and (or .cse8 (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse9) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) (or (and (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse10) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse11) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse12) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse4)) .cse6))) (= 1 (select .cse13 |c_ULTIMATE.start_main_~b~0#1.offset|)) (or .cse3 (and (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse14) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse6) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse15) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse8))) (or (let ((.cse19 (+ 6 .cse23))) (and (or (and (or .cse16 (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse17 .cse18 .cse19)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) (or .cse20 (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse17 .cse21 .cse19)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1))) .cse8) (or (and (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse12 .cse21 .cse19)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse0) (or .cse3 (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse22 .cse21 .cse19)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1))) .cse6))) .cse4) (or (and (or .cse20 (and (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse5 .cse21 .cse24)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse0) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse14 .cse21 .cse25)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse3))) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse5 .cse18 .cse24)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse16)) .cse6) (or .cse11 (and (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse26) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse3) (or .cse0 (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse27) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)))) (= (select (store .cse13 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse28) (+ (select .cse13 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse29 (- 34359738368))) .cse30)) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (or (and (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse22) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse6) (or .cse8 (and (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse31) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse11) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse17) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse4)))) .cse3) (or (and (or .cse16 (and (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse15 .cse18 .cse25)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse3) (or .cse0 (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse7 .cse18 .cse24)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)))) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse15 .cse21 .cse25)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse20)) .cse8) (or (let ((.cse32 (+ 6 .cse30))) (and (or (and (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse9 .cse18 .cse32)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse0) (or .cse3 (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse31 .cse18 .cse32)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1))) .cse8) (or (and (or .cse20 (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse10 .cse21 .cse32)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) (or .cse16 (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse10 .cse18 .cse32)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1))) .cse6))) .cse11)))))))) is different from false [2021-11-22 15:55:57,120 WARN L227 SmtUtils]: Spent 11.18s on a formula simplification. DAG size of input: 117 DAG size of output: 93 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:55:59,529 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 15:56:02,093 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []