./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-data/running_example.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-data/running_example.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9f2ba794705756c5490886c819c60d701b0c664a ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-data/running_example.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9f2ba794705756c5490886c819c60d701b0c664a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:36:54,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:36:54,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:36:54,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:36:54,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:36:54,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:36:54,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:36:54,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:36:54,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:36:54,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:36:54,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:36:54,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:36:54,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:36:54,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:36:54,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:36:54,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:36:54,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:36:54,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:36:54,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:36:54,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:36:54,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:36:54,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:36:54,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:36:54,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:36:54,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:36:54,554 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:36:54,554 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:36:54,555 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:36:54,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:36:54,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:36:54,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:36:54,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:36:54,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:36:54,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:36:54,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:36:54,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:36:54,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:36:54,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:36:54,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:36:54,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:36:54,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:36:54,568 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:36:54,611 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:36:54,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:36:54,613 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:36:54,614 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:36:54,614 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:36:54,614 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:36:54,614 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:36:54,614 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:36:54,615 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:36:54,615 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:36:54,616 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:36:54,616 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:36:54,616 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:36:54,617 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:36:54,617 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:36:54,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:36:54,618 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:36:54,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:36:54,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:36:54,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:36:54,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:36:54,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:36:54,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:36:54,619 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:36:54,619 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:36:54,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:36:54,619 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:36:54,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:36:54,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:36:54,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:36:54,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:36:54,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:36:54,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:36:54,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:36:54,621 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:36:54,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:36:54,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:36:54,622 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:36:54,622 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:36:54,622 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f2ba794705756c5490886c819c60d701b0c664a [2021-10-16 02:36:54,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:36:55,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:36:55,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:36:55,020 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:36:55,021 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:36:55,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/heap-data/running_example.i [2021-10-16 02:36:55,099 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/data/92eb6cd15/99e08cec0748415a8b294528278bdda1/FLAGcdd7c1c1e [2021-10-16 02:36:55,701 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:36:55,702 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/sv-benchmarks/c/heap-data/running_example.i [2021-10-16 02:36:55,714 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/data/92eb6cd15/99e08cec0748415a8b294528278bdda1/FLAGcdd7c1c1e [2021-10-16 02:36:55,979 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/data/92eb6cd15/99e08cec0748415a8b294528278bdda1 [2021-10-16 02:36:55,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:36:55,982 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:36:55,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:36:55,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:36:55,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:36:55,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:36:55" (1/1) ... [2021-10-16 02:36:55,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88eee07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:36:55, skipping insertion in model container [2021-10-16 02:36:55,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:36:55" (1/1) ... [2021-10-16 02:36:55,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:36:56,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:36:56,334 WARN L228 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_3ffadb54-2243-4ea3-b3fd-0726aed423b0/sv-benchmarks/c/heap-data/running_example.i[23610,23623] [2021-10-16 02:36:56,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:36:56,346 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:36:56,383 WARN L228 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_3ffadb54-2243-4ea3-b3fd-0726aed423b0/sv-benchmarks/c/heap-data/running_example.i[23610,23623] [2021-10-16 02:36:56,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:36:56,413 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:36:56,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:36:56 WrapperNode [2021-10-16 02:36:56,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:36:56,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:36:56,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:36:56,415 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:36:56,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:36:56" (1/1) ... [2021-10-16 02:36:56,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:36:56" (1/1) ... [2021-10-16 02:36:56,456 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:36:56,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:36:56,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:36:56,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:36:56,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:36:56" (1/1) ... [2021-10-16 02:36:56,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:36:56" (1/1) ... [2021-10-16 02:36:56,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:36:56" (1/1) ... [2021-10-16 02:36:56,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:36:56" (1/1) ... [2021-10-16 02:36:56,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:36:56" (1/1) ... [2021-10-16 02:36:56,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:36:56" (1/1) ... [2021-10-16 02:36:56,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:36:56" (1/1) ... [2021-10-16 02:36:56,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:36:56,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:36:56,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:36:56,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:36:56,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:36:56" (1/1) ... [2021-10-16 02:36:56,493 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:36:56,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:36:56,518 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:36:56,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:36:56,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:36:56,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 02:36:56,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:36:56,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 02:36:56,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:36:56,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 02:36:56,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:36:56,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:36:56,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:36:56,923 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:36:56,923 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 02:36:56,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:36:56 BoogieIcfgContainer [2021-10-16 02:36:56,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:36:56,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:36:56,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:36:56,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:36:56,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:36:55" (1/3) ... [2021-10-16 02:36:56,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b5f3b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:36:56, skipping insertion in model container [2021-10-16 02:36:56,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:36:56" (2/3) ... [2021-10-16 02:36:56,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b5f3b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:36:56, skipping insertion in model container [2021-10-16 02:36:56,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:36:56" (3/3) ... [2021-10-16 02:36:56,934 INFO L111 eAbstractionObserver]: Analyzing ICFG running_example.i [2021-10-16 02:36:56,939 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:36:56,939 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:36:57,018 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:36:57,041 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:36:57,041 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:36:57,058 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:36:57,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:36:57,083 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:36:57,084 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:36:57,084 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:36:57,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:36:57,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1470856896, now seen corresponding path program 1 times [2021-10-16 02:36:57,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:36:57,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647068256] [2021-10-16 02:36:57,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:36:57,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:36:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:36:57,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:36:57,305 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:36:57,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647068256] [2021-10-16 02:36:57,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647068256] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:36:57,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:36:57,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:36:57,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448831450] [2021-10-16 02:36:57,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:36:57,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:36:57,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:36:57,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:36:57,328 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:36:57,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:36:57,340 INFO L93 Difference]: Finished difference Result 18 states and 26 transitions. [2021-10-16 02:36:57,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:36:57,342 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-16 02:36:57,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:36:57,349 INFO L225 Difference]: With dead ends: 18 [2021-10-16 02:36:57,349 INFO L226 Difference]: Without dead ends: 11 [2021-10-16 02:36:57,352 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:36:57,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-16 02:36:57,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-16 02:36:57,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 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) [2021-10-16 02:36:57,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2021-10-16 02:36:57,381 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 6 [2021-10-16 02:36:57,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:36:57,382 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-10-16 02:36:57,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:36:57,383 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2021-10-16 02:36:57,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:36:57,383 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:36:57,384 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:36:57,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:36:57,384 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:36:57,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:36:57,388 INFO L82 PathProgramCache]: Analyzing trace with hash 237321750, now seen corresponding path program 1 times [2021-10-16 02:36:57,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:36:57,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262809504] [2021-10-16 02:36:57,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:36:57,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:36:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:36:57,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:36:57,542 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:36:57,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262809504] [2021-10-16 02:36:57,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262809504] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:36:57,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:36:57,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:36:57,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825761759] [2021-10-16 02:36:57,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:36:57,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:36:57,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:36:57,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:36:57,547 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:36:57,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:36:57,617 INFO L93 Difference]: Finished difference Result 22 states and 28 transitions. [2021-10-16 02:36:57,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:36:57,618 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-10-16 02:36:57,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:36:57,619 INFO L225 Difference]: With dead ends: 22 [2021-10-16 02:36:57,619 INFO L226 Difference]: Without dead ends: 20 [2021-10-16 02:36:57,620 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:36:57,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-16 02:36:57,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2021-10-16 02:36:57,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:36:57,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2021-10-16 02:36:57,625 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 8 [2021-10-16 02:36:57,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:36:57,626 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2021-10-16 02:36:57,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:36:57,626 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2021-10-16 02:36:57,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 02:36:57,627 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:36:57,627 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:36:57,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:36:57,628 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:36:57,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:36:57,629 INFO L82 PathProgramCache]: Analyzing trace with hash 540596448, now seen corresponding path program 1 times [2021-10-16 02:36:57,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:36:57,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432584358] [2021-10-16 02:36:57,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:36:57,630 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:36:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:36:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:36:57,910 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:36:57,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432584358] [2021-10-16 02:36:57,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432584358] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:36:57,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901264172] [2021-10-16 02:36:57,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:36:57,912 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:36:57,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:36:57,914 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:36:57,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:36:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:36:57,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-16 02:36:57,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:36:58,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:36:58,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:58,053 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 0 case distinctions, treesize of input 20 treesize of output 9 [2021-10-16 02:36:58,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:58,061 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 0 case distinctions, treesize of input 20 treesize of output 9 [2021-10-16 02:36:58,340 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:36:58,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-10-16 02:36:58,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2021-10-16 02:36:58,365 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 47 treesize of output 43 [2021-10-16 02:36:58,370 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:36:58,372 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-16 02:36:58,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-10-16 02:36:58,392 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 14 treesize of output 10 [2021-10-16 02:36:58,393 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-16 02:36:58,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:36:58,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:36:58,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-10-16 02:36:58,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [935382200] [2021-10-16 02:36:58,524 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-16 02:36:58,524 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:36:58,531 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:36:58,541 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:36:58,542 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:36:58,579 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:36:58,582 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:36:58,583 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:36:58,583 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-16 02:36:58,584 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:36:58,584 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:36:58,585 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:36:58,589 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:36:58,590 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:36:58,591 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:36:58,591 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:36:58,592 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:36:58,592 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-16 02:36:58,597 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:36:58,598 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:36:58,600 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:36:58,601 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:36:58,602 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-16 02:36:58,603 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 02:36:58,603 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:36:58,604 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:36:58,606 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:36:58,607 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:36:58,607 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-16 02:36:58,609 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-16 02:36:58,610 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:36:58,610 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:36:58,611 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-16 02:36:58,614 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 199 [2021-10-16 02:36:58,626 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@4f9106ca at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.assertLhs(IncrementalPlicationChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:135) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.(ArrayIndexEqualityManager.java:92) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:571) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimAllRec(ElimStorePlain.java:444) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:242) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:402) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:228) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 02:36:58,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-16 02:36:58,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-16 02:36:58,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441459908] [2021-10-16 02:36:58,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:36:58,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:36:58,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:36:58,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:36:58,637 INFO L87 Difference]: Start difference. First operand 18 states and 24 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:36:58,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:36:58,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:36:58,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:36:58,859 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@4f9106ca at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:356) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:204) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.checkInternal(ProtectiveHoareTripleChecker.java:61) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkInternal(EfficientHoareTripleChecker.java:63) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:864) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:778) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 02:36:58,861 INFO L168 Benchmark]: Toolchain (without parser) took 2878.53 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 67.7 MB in the beginning and 61.0 MB in the end (delta: 6.7 MB). Peak memory consumption was 33.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:36:58,862 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory is still 65.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:36:58,862 INFO L168 Benchmark]: CACSL2BoogieTranslator took 430.53 ms. Allocated memory is still 90.2 MB. Free memory was 67.5 MB in the beginning and 59.2 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:36:58,863 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.34 ms. Allocated memory is still 90.2 MB. Free memory was 59.2 MB in the beginning and 57.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:36:58,863 INFO L168 Benchmark]: Boogie Preprocessor took 27.10 ms. Allocated memory is still 90.2 MB. Free memory was 57.4 MB in the beginning and 56.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:36:58,864 INFO L168 Benchmark]: RCFGBuilder took 440.94 ms. Allocated memory is still 90.2 MB. Free memory was 56.0 MB in the beginning and 40.4 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:36:58,864 INFO L168 Benchmark]: TraceAbstraction took 1933.42 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 39.9 MB in the beginning and 61.0 MB in the end (delta: -21.1 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:36:58,867 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory is still 65.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 430.53 ms. Allocated memory is still 90.2 MB. Free memory was 67.5 MB in the beginning and 59.2 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.34 ms. Allocated memory is still 90.2 MB. Free memory was 59.2 MB in the beginning and 57.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.10 ms. Allocated memory is still 90.2 MB. Free memory was 57.4 MB in the beginning and 56.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 440.94 ms. Allocated memory is still 90.2 MB. Free memory was 56.0 MB in the beginning and 40.4 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1933.42 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 39.9 MB in the beginning and 61.0 MB in the end (delta: -21.1 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@4f9106ca de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@4f9106ca: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 02:36:58,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:37:01,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:37:01,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:37:01,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:37:01,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:37:01,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:37:01,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:37:01,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:37:01,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:37:01,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:37:01,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:37:01,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:37:01,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:37:01,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:37:01,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:37:01,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:37:01,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:37:01,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:37:01,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:37:01,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:37:01,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:37:01,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:37:01,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:37:01,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:37:01,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:37:01,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:37:01,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:37:01,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:37:01,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:37:01,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:37:01,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:37:01,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:37:01,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:37:01,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:37:01,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:37:01,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:37:01,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:37:01,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:37:01,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:37:01,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:37:01,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:37:01,449 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:37:01,497 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:37:01,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:37:01,498 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:37:01,499 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:37:01,499 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:37:01,499 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:37:01,499 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:37:01,500 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:37:01,500 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:37:01,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:37:01,502 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:37:01,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:37:01,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:37:01,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:37:01,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:37:01,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:37:01,504 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:37:01,504 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:37:01,504 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:37:01,504 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:37:01,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:37:01,505 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:37:01,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:37:01,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:37:01,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:37:01,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:37:01,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:37:01,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:37:01,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:37:01,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:37:01,507 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:37:01,507 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:37:01,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:37:01,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:37:01,508 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:37:01,508 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f2ba794705756c5490886c819c60d701b0c664a [2021-10-16 02:37:01,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:37:01,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:37:01,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:37:01,922 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:37:01,923 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:37:01,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/heap-data/running_example.i [2021-10-16 02:37:01,971 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/data/e004f26c7/64b29403b769478a83a5962fe44ce21e/FLAGec55ccc56 [2021-10-16 02:37:02,463 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:37:02,464 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/sv-benchmarks/c/heap-data/running_example.i [2021-10-16 02:37:02,476 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/data/e004f26c7/64b29403b769478a83a5962fe44ce21e/FLAGec55ccc56 [2021-10-16 02:37:02,818 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/data/e004f26c7/64b29403b769478a83a5962fe44ce21e [2021-10-16 02:37:02,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:37:02,824 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:37:02,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:37:02,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:37:02,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:37:02,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:37:02" (1/1) ... [2021-10-16 02:37:02,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22c19cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:02, skipping insertion in model container [2021-10-16 02:37:02,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:37:02" (1/1) ... [2021-10-16 02:37:02,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:37:02,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:37:03,293 WARN L228 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_3ffadb54-2243-4ea3-b3fd-0726aed423b0/sv-benchmarks/c/heap-data/running_example.i[23610,23623] [2021-10-16 02:37:03,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:37:03,324 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:37:03,386 WARN L228 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_3ffadb54-2243-4ea3-b3fd-0726aed423b0/sv-benchmarks/c/heap-data/running_example.i[23610,23623] [2021-10-16 02:37:03,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:37:03,435 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:37:03,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:03 WrapperNode [2021-10-16 02:37:03,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:37:03,438 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:37:03,438 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:37:03,438 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:37:03,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:03" (1/1) ... [2021-10-16 02:37:03,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:03" (1/1) ... [2021-10-16 02:37:03,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:37:03,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:37:03,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:37:03,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:37:03,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:03" (1/1) ... [2021-10-16 02:37:03,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:03" (1/1) ... [2021-10-16 02:37:03,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:03" (1/1) ... [2021-10-16 02:37:03,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:03" (1/1) ... [2021-10-16 02:37:03,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:03" (1/1) ... [2021-10-16 02:37:03,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:03" (1/1) ... [2021-10-16 02:37:03,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:03" (1/1) ... [2021-10-16 02:37:03,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:37:03,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:37:03,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:37:03,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:37:03,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:03" (1/1) ... [2021-10-16 02:37:03,537 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:37:03,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:37:03,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:37:03,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:37:03,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 02:37:03,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:37:03,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 02:37:03,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:37:03,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 02:37:03,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 02:37:03,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:37:03,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:37:03,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:37:04,066 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:37:04,066 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 02:37:04,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:37:04 BoogieIcfgContainer [2021-10-16 02:37:04,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:37:04,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:37:04,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:37:04,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:37:04,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:37:02" (1/3) ... [2021-10-16 02:37:04,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c97021d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:37:04, skipping insertion in model container [2021-10-16 02:37:04,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:03" (2/3) ... [2021-10-16 02:37:04,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c97021d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:37:04, skipping insertion in model container [2021-10-16 02:37:04,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:37:04" (3/3) ... [2021-10-16 02:37:04,076 INFO L111 eAbstractionObserver]: Analyzing ICFG running_example.i [2021-10-16 02:37:04,081 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:37:04,081 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:37:04,125 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:37:04,133 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:37:04,133 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:37:04,146 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 16 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) [2021-10-16 02:37:04,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:37:04,150 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:04,151 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:37:04,152 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:04,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:04,157 INFO L82 PathProgramCache]: Analyzing trace with hash 508893296, now seen corresponding path program 1 times [2021-10-16 02:37:04,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:37:04,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489986777] [2021-10-16 02:37:04,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:04,170 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:37:04,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:37:04,180 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:37:04,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:37:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:04,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:37:04,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:37:04,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:37:04,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:37:04,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:37:04,419 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:37:04,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489986777] [2021-10-16 02:37:04,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489986777] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:37:04,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:37:04,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:37:04,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20942245] [2021-10-16 02:37:04,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:37:04,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:37:04,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:37:04,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:37:04,449 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 16 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:37:04,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:04,463 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2021-10-16 02:37:04,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:37:04,465 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-10-16 02:37:04,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:04,481 INFO L225 Difference]: With dead ends: 26 [2021-10-16 02:37:04,481 INFO L226 Difference]: Without dead ends: 14 [2021-10-16 02:37:04,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:37:04,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-16 02:37:04,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-16 02:37:04,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:37:04,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2021-10-16 02:37:04,509 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 8 [2021-10-16 02:37:04,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:04,509 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2021-10-16 02:37:04,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:37:04,509 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2021-10-16 02:37:04,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:37:04,510 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:04,510 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:37:04,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:37:04,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:37:04,724 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:04,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:04,731 INFO L82 PathProgramCache]: Analyzing trace with hash 307872697, now seen corresponding path program 1 times [2021-10-16 02:37:04,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:37:04,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806880623] [2021-10-16 02:37:04,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:04,736 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:37:04,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:37:04,737 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:37:04,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:37:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:04,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:37:04,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:37:04,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:37:04,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-10-16 02:37:04,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:37:04,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:37:05,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:37:05,053 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:37:05,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806880623] [2021-10-16 02:37:05,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806880623] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:37:05,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:37:05,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-16 02:37:05,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628824615] [2021-10-16 02:37:05,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:37:05,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:37:05,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:37:05,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:37:05,056 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:37:05,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:05,671 INFO L93 Difference]: Finished difference Result 52 states and 73 transitions. [2021-10-16 02:37:05,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:37:05,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-16 02:37:05,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:05,675 INFO L225 Difference]: With dead ends: 52 [2021-10-16 02:37:05,675 INFO L226 Difference]: Without dead ends: 43 [2021-10-16 02:37:05,676 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 106.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:37:05,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-16 02:37:05,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 29. [2021-10-16 02:37:05,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 28 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:37:05,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 41 transitions. [2021-10-16 02:37:05,694 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 41 transitions. Word has length 9 [2021-10-16 02:37:05,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:05,694 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 41 transitions. [2021-10-16 02:37:05,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:37:05,695 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 41 transitions. [2021-10-16 02:37:05,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 02:37:05,696 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:05,696 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:37:05,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:37:05,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:37:05,909 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:05,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:05,909 INFO L82 PathProgramCache]: Analyzing trace with hash -44654956, now seen corresponding path program 1 times [2021-10-16 02:37:05,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:37:05,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261446362] [2021-10-16 02:37:05,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:05,911 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:37:05,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:37:05,912 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:37:05,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:37:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:06,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 02:37:06,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:37:06,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:37:06,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:37:06,229 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:06,233 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-10-16 02:37:06,255 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:06,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-16 02:37:06,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:06,348 INFO L354 Elim1Store]: treesize reduction 152, result has 14.6 percent of original size [2021-10-16 02:37:06,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 51 [2021-10-16 02:37:06,367 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:37:06,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2021-10-16 02:37:06,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-10-16 02:37:06,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:37:06,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:37:06,609 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:06,612 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-16 02:37:06,616 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:06,619 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-16 02:37:08,677 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_18 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_18 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_4)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_18 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_18) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_18) v_DerPreprocessor_3) v_ULTIMATE.start_main_~p~0.offset_18 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_18)))))) is different from false [2021-10-16 02:37:08,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-10-16 02:37:08,820 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:37:08,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1261446362] [2021-10-16 02:37:08,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1261446362] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:37:08,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1689119014] [2021-10-16 02:37:08,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:08,822 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:37:08,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:37:08,824 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:37:08,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-16 02:37:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:09,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 02:37:09,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:37:09,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:37:09,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:37:09,159 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:09,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-10-16 02:37:09,166 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:09,168 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-16 02:37:09,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:09,267 INFO L354 Elim1Store]: treesize reduction 152, result has 14.6 percent of original size [2021-10-16 02:37:09,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 51 [2021-10-16 02:37:09,283 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:37:09,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2021-10-16 02:37:09,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-10-16 02:37:09,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:37:09,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:37:09,416 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:09,418 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:37:09,422 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:09,438 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:37:11,482 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_21 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_21 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_21))))) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_8)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_21 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_21) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_21) v_DerPreprocessor_7) v_ULTIMATE.start_main_~p~0.offset_21 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) is different from false [2021-10-16 02:37:11,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-10-16 02:37:11,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1689119014] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:37:11,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686284625] [2021-10-16 02:37:11,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:11,620 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:37:11,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:37:11,627 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:37:11,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-16 02:37:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:11,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 02:37:11,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:37:11,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:37:11,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:37:11,862 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:11,864 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-10-16 02:37:11,868 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:11,870 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-16 02:37:11,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:11,965 INFO L354 Elim1Store]: treesize reduction 152, result has 14.6 percent of original size [2021-10-16 02:37:11,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-10-16 02:37:11,977 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:37:11,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2021-10-16 02:37:12,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-10-16 02:37:12,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:37:12,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:37:12,117 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:12,123 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:37:12,127 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:12,128 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:37:14,175 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~p~0.offset_24 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_24 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_12)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_24 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_24) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_24) v_DerPreprocessor_11) v_ULTIMATE.start_main_~p~0.offset_24 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_24))))))) is different from false [2021-10-16 02:37:14,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-10-16 02:37:14,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686284625] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:37:14,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:37:14,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 11 [2021-10-16 02:37:14,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112268708] [2021-10-16 02:37:14,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-16 02:37:14,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:37:14,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-16 02:37:14,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=42, Unknown=3, NotChecked=42, Total=110 [2021-10-16 02:37:14,310 INFO L87 Difference]: Start difference. First operand 29 states and 41 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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) [2021-10-16 02:37:15,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:15,185 INFO L93 Difference]: Finished difference Result 69 states and 97 transitions. [2021-10-16 02:37:15,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-16 02:37:15,187 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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) Word has length 12 [2021-10-16 02:37:15,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:15,188 INFO L225 Difference]: With dead ends: 69 [2021-10-16 02:37:15,188 INFO L226 Difference]: Without dead ends: 60 [2021-10-16 02:37:15,189 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 6323.9ms TimeCoverageRelationStatistics Valid=82, Invalid=137, Unknown=3, NotChecked=84, Total=306 [2021-10-16 02:37:15,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-16 02:37:15,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 32. [2021-10-16 02:37:15,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 31 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:37:15,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2021-10-16 02:37:15,200 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 12 [2021-10-16 02:37:15,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:15,201 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2021-10-16 02:37:15,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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) [2021-10-16 02:37:15,202 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2021-10-16 02:37:15,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 02:37:15,204 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:15,204 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:37:15,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:37:15,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:37:15,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:37:15,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:37:15,835 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:15,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:15,836 INFO L82 PathProgramCache]: Analyzing trace with hash -893074814, now seen corresponding path program 1 times [2021-10-16 02:37:15,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:37:15,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474872516] [2021-10-16 02:37:15,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:15,836 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:37:15,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:37:15,838 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:37:15,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:37:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:15,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:37:15,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:37:15,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:15,964 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 0 case distinctions, treesize of input 20 treesize of output 9 [2021-10-16 02:37:15,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:15,978 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 0 case distinctions, treesize of input 20 treesize of output 9 [2021-10-16 02:37:16,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-16 02:37:16,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-16 02:37:16,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-10-16 02:37:16,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-10-16 02:37:16,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:37:16,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:37:16,316 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:16,317 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-16 02:37:16,320 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:16,321 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-16 02:37:16,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:37:16,507 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:37:16,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474872516] [2021-10-16 02:37:16,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [474872516] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:37:16,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1468823971] [2021-10-16 02:37:16,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:16,507 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:37:16,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:37:16,509 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:37:16,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-16 02:37:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:16,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:37:16,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:37:16,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:16,717 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 0 case distinctions, treesize of input 20 treesize of output 9 [2021-10-16 02:37:16,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:16,725 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 0 case distinctions, treesize of input 20 treesize of output 9 [2021-10-16 02:37:16,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-16 02:37:16,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-16 02:37:16,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-10-16 02:37:16,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-10-16 02:37:16,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:37:16,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:37:16,968 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:16,969 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-16 02:37:16,972 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:16,973 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-16 02:37:17,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:37:17,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1468823971] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:37:17,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619074304] [2021-10-16 02:37:17,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:17,100 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:37:17,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:37:17,107 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:37:17,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-16 02:37:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:17,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:37:17,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:37:17,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:17,288 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 0 case distinctions, treesize of input 20 treesize of output 9 [2021-10-16 02:37:17,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:17,299 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 0 case distinctions, treesize of input 20 treesize of output 9 [2021-10-16 02:37:17,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-16 02:37:17,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-16 02:37:17,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-10-16 02:37:17,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-10-16 02:37:17,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:37:17,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:37:17,526 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:17,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-16 02:37:17,530 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:17,535 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-16 02:37:17,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:37:17,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619074304] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:37:17,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:37:17,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 7 [2021-10-16 02:37:17,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544224853] [2021-10-16 02:37:17,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:37:17,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:37:17,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:37:17,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:37:17,672 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:37:18,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:18,197 INFO L93 Difference]: Finished difference Result 68 states and 94 transitions. [2021-10-16 02:37:18,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:37:18,198 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-16 02:37:18,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:18,199 INFO L225 Difference]: With dead ends: 68 [2021-10-16 02:37:18,199 INFO L226 Difference]: Without dead ends: 59 [2021-10-16 02:37:18,199 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 223.9ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:37:18,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-16 02:37:18,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2021-10-16 02:37:18,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.4509803921568627) internal successors, (74), 51 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) [2021-10-16 02:37:18,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 74 transitions. [2021-10-16 02:37:18,208 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 74 transitions. Word has length 15 [2021-10-16 02:37:18,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:18,209 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 74 transitions. [2021-10-16 02:37:18,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:37:18,209 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 74 transitions. [2021-10-16 02:37:18,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 02:37:18,210 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:18,210 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:37:18,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:37:18,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:37:18,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:37:18,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:37:18,829 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:18,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:18,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1000926759, now seen corresponding path program 2 times [2021-10-16 02:37:18,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:37:18,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279576343] [2021-10-16 02:37:18,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:37:18,830 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:37:18,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:37:18,831 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:37:18,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:37:19,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:37:19,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:37:19,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-16 02:37:19,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:37:19,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:37:19,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:37:19,204 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:37:19,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-10-16 02:37:19,215 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:19,216 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-16 02:37:19,219 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:19,220 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-16 02:37:19,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:19,251 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-10-16 02:37:19,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-10-16 02:37:19,334 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:19,335 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-16 02:37:19,339 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:19,340 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-10-16 02:37:19,478 INFO L354 Elim1Store]: treesize reduction 93, result has 29.0 percent of original size [2021-10-16 02:37:19,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 67 [2021-10-16 02:37:19,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-10-16 02:37:19,691 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:37:19,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:37:19,783 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:19,784 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-16 02:37:19,787 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:19,789 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-16 02:37:21,829 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_39 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_24)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_39 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_39) (_ bv4 32) v_DerPreprocessor_23) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)))) is different from false [2021-10-16 02:37:21,940 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:21,941 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-10-16 02:37:21,946 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:21,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-10-16 02:37:24,227 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_16 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_22 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_40 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_23 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_25 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_39 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_22))))) (bvsgt v_ULTIMATE.start_main_~x~0_16 (_ bv20 32)) (bvslt v_ULTIMATE.start_main_~x~0_16 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_26)))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_22 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_22) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_40) v_DerPreprocessor_25) v_ULTIMATE.start_main_~p~0.offset_40 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_23) v_DerPreprocessor_24))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_39 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_39) (_ bv4 32) v_DerPreprocessor_23) (_ bv0 32) v_ULTIMATE.start_main_~x~0_16))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) is different from false [2021-10-16 02:37:24,806 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2021-10-16 02:37:24,807 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:37:24,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279576343] [2021-10-16 02:37:24,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279576343] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:37:24,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1470268752] [2021-10-16 02:37:24,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:37:24,808 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:37:24,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:37:24,815 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:37:24,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-16 02:37:25,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:37:25,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763742802] [2021-10-16 02:37:25,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:37:25,116 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:37:25,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:37:25,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 1 [2021-10-16 02:37:25,127 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:37:25,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-16 02:37:25,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:37:25,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:37:25,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-16 02:37:25,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:37:25,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:37:25,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:37:25,614 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-16 02:37:25,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-10-16 02:37:25,637 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:25,638 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-16 02:37:25,641 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:25,643 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-16 02:37:25,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:25,678 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-10-16 02:37:25,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-10-16 02:37:25,849 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:25,850 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-10-16 02:37:25,855 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:25,856 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-10-16 02:37:26,018 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-10-16 02:37:26,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2021-10-16 02:37:26,055 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-16 02:37:26,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 46 [2021-10-16 02:37:26,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-10-16 02:37:26,199 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:37:26,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:37:26,243 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:26,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-16 02:37:26,247 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:26,248 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-16 02:37:28,305 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_43 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_43 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_32)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_43 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_43) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_43) v_DerPreprocessor_31) v_ULTIMATE.start_main_~p~0.offset_43 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_43)))))) is different from false [2021-10-16 02:37:28,417 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:28,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-16 02:37:28,426 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:28,428 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-10-16 02:37:30,638 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_29 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_27 (_ BitVec 32)) (v_DerPreprocessor_33 (_ BitVec 32)) (v_DerPreprocessor_34 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_44 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_43 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_43 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_20 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_27))))) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_34)))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_27 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_27) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_44) v_DerPreprocessor_33) v_ULTIMATE.start_main_~p~0.offset_44 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_29) v_DerPreprocessor_32))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_43 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_43) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_43) v_DerPreprocessor_31) v_ULTIMATE.start_main_~p~0.offset_43 v_ULTIMATE.start_main_~x~0_20))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_main_~tail~0.base_27 (_ bv1 1)) v_ULTIMATE.start_main_~p~0.base_43)))))))) is different from false [2021-10-16 02:37:31,055 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2021-10-16 02:37:31,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763742802] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:37:31,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2021-10-16 02:37:31,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 16 [2021-10-16 02:37:31,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797540265] [2021-10-16 02:37:31,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-16 02:37:31,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:37:31,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-16 02:37:31,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=99, Unknown=4, NotChecked=92, Total=240 [2021-10-16 02:37:31,057 INFO L87 Difference]: Start difference. First operand 52 states and 74 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 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) [2021-10-16 02:37:33,418 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) (_ bv0 32)))) (and (not (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~tail~0.base)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~tail~0.base))))) (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_39 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_24)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_39 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_39) (_ bv4 32) v_DerPreprocessor_23) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)))) (not (bvslt .cse1 (_ bv10 32))) (= c_ULTIMATE.start_main_~p~0.offset (_ bv0 32)) (not (bvsgt .cse1 (_ bv20 32))) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_43 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_43 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_32)))) (store .cse2 v_ULTIMATE.start_main_~p~0.base_43 (store (store (select .cse2 v_ULTIMATE.start_main_~p~0.base_43) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_43) v_DerPreprocessor_31) v_ULTIMATE.start_main_~p~0.offset_43 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_43)))))) (exists ((v_arrayElimCell_32 (_ BitVec 1))) (let ((.cse3 (bvneg v_arrayElimCell_32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg .cse3)) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse3 (select |c_#valid| c_ULTIMATE.start_main_~list~0.base)))))))) is different from false [2021-10-16 02:37:35,489 WARN L838 $PredicateComparison]: unable to prove that (and (not (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~tail~0.base)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~tail~0.base))))) (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_39 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_24)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_39 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_39) (_ bv4 32) v_DerPreprocessor_23) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)))) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_43 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_43 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_32)))) (store .cse1 v_ULTIMATE.start_main_~p~0.base_43 (store (store (select .cse1 v_ULTIMATE.start_main_~p~0.base_43) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_43) v_DerPreprocessor_31) v_ULTIMATE.start_main_~p~0.offset_43 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_43)))))) (exists ((v_arrayElimCell_32 (_ BitVec 1))) (let ((.cse2 (bvneg v_arrayElimCell_32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg .cse2)) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse2 (select |c_#valid| c_ULTIMATE.start_main_~list~0.base))))))) is different from false [2021-10-16 02:37:36,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:36,556 INFO L93 Difference]: Finished difference Result 144 states and 206 transitions. [2021-10-16 02:37:36,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-16 02:37:36,558 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 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) Word has length 15 [2021-10-16 02:37:36,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:36,560 INFO L225 Difference]: With dead ends: 144 [2021-10-16 02:37:36,560 INFO L226 Difference]: Without dead ends: 127 [2021-10-16 02:37:36,561 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 12679.2ms TimeCoverageRelationStatistics Valid=129, Invalid=269, Unknown=6, NotChecked=246, Total=650 [2021-10-16 02:37:36,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-16 02:37:36,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 75. [2021-10-16 02:37:36,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.4594594594594594) internal successors, (108), 74 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:37:36,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 108 transitions. [2021-10-16 02:37:36,574 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 108 transitions. Word has length 15 [2021-10-16 02:37:36,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:36,574 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 108 transitions. [2021-10-16 02:37:36,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 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) [2021-10-16 02:37:36,575 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 108 transitions. [2021-10-16 02:37:36,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-16 02:37:36,576 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:36,576 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:37:36,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:37:36,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:37:36,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:37:36,989 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:36,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:36,990 INFO L82 PathProgramCache]: Analyzing trace with hash -128474150, now seen corresponding path program 1 times [2021-10-16 02:37:36,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:37:36,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225054683] [2021-10-16 02:37:36,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:36,990 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:37:36,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:37:36,991 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:37:36,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 02:37:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:37,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:37:37,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:37:37,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:37:37,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-16 02:37:37,281 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:37:37,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:37:37,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:37:37,403 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:37:37,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225054683] [2021-10-16 02:37:37,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225054683] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:37:37,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:37:37,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-16 02:37:37,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168005101] [2021-10-16 02:37:37,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:37:37,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:37:37,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:37:37,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:37:37,405 INFO L87 Difference]: Start difference. First operand 75 states and 108 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 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) [2021-10-16 02:37:37,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:37,965 INFO L93 Difference]: Finished difference Result 87 states and 123 transitions. [2021-10-16 02:37:37,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:37:37,966 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 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 17 [2021-10-16 02:37:37,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:37,967 INFO L225 Difference]: With dead ends: 87 [2021-10-16 02:37:37,967 INFO L226 Difference]: Without dead ends: 77 [2021-10-16 02:37:37,968 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 150.1ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:37:37,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-16 02:37:37,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2021-10-16 02:37:37,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.4324324324324325) internal successors, (106), 74 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:37:37,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 106 transitions. [2021-10-16 02:37:37,979 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 106 transitions. Word has length 17 [2021-10-16 02:37:37,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:37,979 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 106 transitions. [2021-10-16 02:37:37,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 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) [2021-10-16 02:37:37,979 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 106 transitions. [2021-10-16 02:37:37,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-16 02:37:37,980 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:37,981 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:37:37,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:37:38,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:37:38,193 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:38,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:38,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1524987734, now seen corresponding path program 1 times [2021-10-16 02:37:38,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:37:38,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549982059] [2021-10-16 02:37:38,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:38,194 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:37:38,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:37:38,195 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:37:38,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-16 02:37:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:38,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-16 02:37:38,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:37:38,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:37:38,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:37:38,620 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:37:38,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-10-16 02:37:38,631 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:38,631 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-16 02:37:38,635 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:38,636 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-16 02:37:38,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:38,667 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-10-16 02:37:38,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-10-16 02:37:38,779 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:38,780 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-16 02:37:38,784 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:38,785 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-10-16 02:37:38,899 INFO L354 Elim1Store]: treesize reduction 93, result has 29.0 percent of original size [2021-10-16 02:37:38,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 67 [2021-10-16 02:37:39,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-10-16 02:37:39,109 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:37:39,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:37:39,219 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:39,220 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-16 02:37:39,223 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:39,224 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-16 02:37:41,279 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_51 (_ BitVec 32)) (v_DerPreprocessor_40 (_ BitVec 32)) (v_DerPreprocessor_39 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_40)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_51 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_51) (_ bv4 32) v_DerPreprocessor_39) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) is different from false [2021-10-16 02:37:41,482 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:41,483 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-16 02:37:41,487 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:41,488 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-10-16 02:37:43,765 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_26 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_33 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_51 (_ BitVec 32)) (v_DerPreprocessor_42 (_ BitVec 32)) (v_DerPreprocessor_40 (_ BitVec 32)) (v_DerPreprocessor_41 (_ BitVec 32)) (v_DerPreprocessor_39 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_36 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_52 (_ BitVec 32))) (or (bvslt v_ULTIMATE.start_main_~x~0_26 (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_33)))))) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_42)))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_33 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_33) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_52) v_DerPreprocessor_41) v_ULTIMATE.start_main_~p~0.offset_52 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_36) v_DerPreprocessor_40))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_51 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_51) (_ bv4 32) v_DerPreprocessor_39) (_ bv0 32) v_ULTIMATE.start_main_~x~0_26))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (bvsgt v_ULTIMATE.start_main_~x~0_26 (_ bv20 32)))) is different from false [2021-10-16 02:37:44,327 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 10 not checked. [2021-10-16 02:37:44,328 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:37:44,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549982059] [2021-10-16 02:37:44,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549982059] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:37:44,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [573789172] [2021-10-16 02:37:44,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:44,328 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:37:44,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:37:44,334 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:37:44,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-10-16 02:37:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:44,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-16 02:37:44,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:37:44,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:37:44,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:37:44,843 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:37:44,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-10-16 02:37:44,857 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:44,858 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-16 02:37:44,861 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:44,862 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-16 02:37:44,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:44,897 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-10-16 02:37:44,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-10-16 02:37:44,996 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:44,997 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-16 02:37:45,001 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:45,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-10-16 02:37:45,117 INFO L354 Elim1Store]: treesize reduction 93, result has 29.0 percent of original size [2021-10-16 02:37:45,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 67 [2021-10-16 02:37:45,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-10-16 02:37:45,270 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:37:45,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:37:45,321 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:45,322 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-16 02:37:45,326 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:45,327 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-16 02:37:47,382 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_47 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_DerPreprocessor_48 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_55 (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_48)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_55 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_55) (_ bv4 32) v_DerPreprocessor_47) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) is different from false [2021-10-16 02:37:47,636 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:47,638 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-16 02:37:47,641 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:47,642 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-10-16 02:37:49,911 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_50 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_56 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_42 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_38 (_ BitVec 32)) (v_DerPreprocessor_47 (_ BitVec 32)) (v_DerPreprocessor_48 (_ BitVec 32)) (v_DerPreprocessor_49 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_55 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_31 (_ BitVec 32))) (or (bvsgt v_ULTIMATE.start_main_~x~0_31 (_ bv20 32)) (bvslt v_ULTIMATE.start_main_~x~0_31 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_50)))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_38 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_38) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_56) v_DerPreprocessor_49) v_ULTIMATE.start_main_~p~0.offset_56 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_42) v_DerPreprocessor_48))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_55 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_55) (_ bv4 32) v_DerPreprocessor_47) (_ bv0 32) v_ULTIMATE.start_main_~x~0_31))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_38)))))))) is different from false [2021-10-16 02:37:50,562 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 10 not checked. [2021-10-16 02:37:50,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [573789172] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:37:50,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372758469] [2021-10-16 02:37:50,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:50,562 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:37:50,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:37:50,565 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:37:50,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-16 02:37:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:50,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-16 02:37:50,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:37:50,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:37:50,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:37:51,066 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-16 02:37:51,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-10-16 02:37:51,086 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:51,087 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-16 02:37:51,090 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:51,091 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-16 02:37:51,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:51,124 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-10-16 02:37:51,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-10-16 02:37:51,353 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:51,354 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-10-16 02:37:51,359 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:51,361 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-16 02:37:51,485 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-10-16 02:37:51,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 70 [2021-10-16 02:37:51,515 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-16 02:37:51,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 44 [2021-10-16 02:37:51,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-10-16 02:37:51,633 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:37:51,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:37:51,680 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:51,681 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-16 02:37:51,684 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:51,685 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-16 02:37:53,735 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~p~0.offset_59 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_55 (_ BitVec 32)) (v_DerPreprocessor_56 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_59 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_56)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_59 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_59) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_59) v_DerPreprocessor_55) v_ULTIMATE.start_main_~p~0.offset_59 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_59)))))) is different from false [2021-10-16 02:37:53,922 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:53,928 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-10-16 02:37:53,930 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:37:53,932 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-16 02:37:56,107 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~p~0.offset_59 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_43 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_36 (_ BitVec 32)) (v_DerPreprocessor_57 (_ BitVec 32)) (v_DerPreprocessor_58 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_60 (_ BitVec 32)) (v_DerPreprocessor_55 (_ BitVec 32)) (v_DerPreprocessor_56 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_59 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_48 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_main_~tail~0.base_43 (_ bv1 1)) v_ULTIMATE.start_main_~p~0.base_59)))))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_43)))))) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_58)))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_43 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_43) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_60) v_DerPreprocessor_57) v_ULTIMATE.start_main_~p~0.offset_60 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_48) v_DerPreprocessor_56))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_59 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_59) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_59) v_DerPreprocessor_55) v_ULTIMATE.start_main_~p~0.offset_59 v_ULTIMATE.start_main_~x~0_36))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) is different from false [2021-10-16 02:37:56,520 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 10 not checked. [2021-10-16 02:37:56,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372758469] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:37:56,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:37:56,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 18 [2021-10-16 02:37:56,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449627263] [2021-10-16 02:37:56,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-16 02:37:56,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:37:56,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-16 02:37:56,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=101, Unknown=6, NotChecked=150, Total=306 [2021-10-16 02:37:56,523 INFO L87 Difference]: Start difference. First operand 75 states and 106 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:37:58,870 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) (_ bv0 32)))) (and (not (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~tail~0.base)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~tail~0.base))))) (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (exists ((v_arrayElimCell_51 (_ BitVec 1))) (let ((.cse0 (bvneg v_arrayElimCell_51))) (and (= (_ bv0 1) (bvadd (bvneg .cse0) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse0 (select |c_#valid| c_ULTIMATE.start_main_~list~0.base)))))) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_51 (_ BitVec 32)) (v_DerPreprocessor_40 (_ BitVec 32)) (v_DerPreprocessor_39 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)) (bvsge (select (select (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_40)))) (store .cse1 v_ULTIMATE.start_main_~p~0.base_51 (store (store (select .cse1 v_ULTIMATE.start_main_~p~0.base_51) (_ bv4 32) v_DerPreprocessor_39) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) (not (bvslt .cse2 (_ bv10 32))) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_47 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_DerPreprocessor_48 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_55 (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)) (bvsge (select (select (let ((.cse3 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_48)))) (store .cse3 v_ULTIMATE.start_main_~p~0.base_55 (store (store (select .cse3 v_ULTIMATE.start_main_~p~0.base_55) (_ bv4 32) v_DerPreprocessor_47) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) (forall ((v_ULTIMATE.start_main_~p~0.offset_59 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_55 (_ BitVec 32)) (v_DerPreprocessor_56 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_59 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvsge (select (select (let ((.cse4 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_56)))) (store .cse4 v_ULTIMATE.start_main_~p~0.base_59 (store (store (select .cse4 v_ULTIMATE.start_main_~p~0.base_59) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_59) v_DerPreprocessor_55) v_ULTIMATE.start_main_~p~0.offset_59 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_59)))))) (= c_ULTIMATE.start_main_~p~0.offset (_ bv0 32)) (not (bvsgt .cse2 (_ bv20 32))))) is different from false [2021-10-16 02:38:00,965 WARN L838 $PredicateComparison]: unable to prove that (and (not (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~tail~0.base)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~tail~0.base))))) (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (exists ((v_arrayElimCell_51 (_ BitVec 1))) (let ((.cse0 (bvneg v_arrayElimCell_51))) (and (= (_ bv0 1) (bvadd (bvneg .cse0) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse0 (select |c_#valid| c_ULTIMATE.start_main_~list~0.base)))))) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_51 (_ BitVec 32)) (v_DerPreprocessor_40 (_ BitVec 32)) (v_DerPreprocessor_39 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)) (bvsge (select (select (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_40)))) (store .cse1 v_ULTIMATE.start_main_~p~0.base_51 (store (store (select .cse1 v_ULTIMATE.start_main_~p~0.base_51) (_ bv4 32) v_DerPreprocessor_39) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_47 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_DerPreprocessor_48 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_55 (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)) (bvsge (select (select (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_48)))) (store .cse2 v_ULTIMATE.start_main_~p~0.base_55 (store (store (select .cse2 v_ULTIMATE.start_main_~p~0.base_55) (_ bv4 32) v_DerPreprocessor_47) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) (forall ((v_ULTIMATE.start_main_~p~0.offset_59 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_55 (_ BitVec 32)) (v_DerPreprocessor_56 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_59 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvsge (select (select (let ((.cse3 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_56)))) (store .cse3 v_ULTIMATE.start_main_~p~0.base_59 (store (store (select .cse3 v_ULTIMATE.start_main_~p~0.base_59) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_59) v_DerPreprocessor_55) v_ULTIMATE.start_main_~p~0.offset_59 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_59))))))) is different from false [2021-10-16 02:38:01,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:38:01,741 INFO L93 Difference]: Finished difference Result 155 states and 217 transitions. [2021-10-16 02:38:01,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-16 02:38:01,743 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-16 02:38:01,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:38:01,744 INFO L225 Difference]: With dead ends: 155 [2021-10-16 02:38:01,744 INFO L226 Difference]: Without dead ends: 146 [2021-10-16 02:38:01,744 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 16693.4ms TimeCoverageRelationStatistics Valid=133, Invalid=271, Unknown=8, NotChecked=344, Total=756 [2021-10-16 02:38:01,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-16 02:38:01,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 73. [2021-10-16 02:38:01,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.4166666666666667) internal successors, (102), 72 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:38:01,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 102 transitions. [2021-10-16 02:38:01,756 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 102 transitions. Word has length 17 [2021-10-16 02:38:01,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:38:01,757 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 102 transitions. [2021-10-16 02:38:01,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:38:01,757 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 102 transitions. [2021-10-16 02:38:01,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 02:38:01,758 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:38:01,758 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:38:01,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-10-16 02:38:01,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-16 02:38:02,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-16 02:38:02,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:38:02,362 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:38:02,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:38:02,362 INFO L82 PathProgramCache]: Analyzing trace with hash -668283619, now seen corresponding path program 1 times [2021-10-16 02:38:02,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:38:02,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126767407] [2021-10-16 02:38:02,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:38:02,362 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:38:02,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:38:02,363 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:38:02,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-16 02:38:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:38:02,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-16 02:38:02,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:38:02,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:38:02,914 INFO L354 Elim1Store]: treesize reduction 102, result has 15.7 percent of original size [2021-10-16 02:38:02,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 115 treesize of output 93 [2021-10-16 02:38:02,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 110 [2021-10-16 02:38:02,979 INFO L354 Elim1Store]: treesize reduction 174, result has 12.6 percent of original size [2021-10-16 02:38:02,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 117 treesize of output 83 [2021-10-16 02:38:03,006 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-10-16 02:38:03,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 104 [2021-10-16 02:38:03,451 INFO L354 Elim1Store]: treesize reduction 100, result has 20.0 percent of original size [2021-10-16 02:38:03,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 140 treesize of output 110 [2021-10-16 02:38:03,492 INFO L354 Elim1Store]: treesize reduction 87, result has 17.9 percent of original size [2021-10-16 02:38:03,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 125 treesize of output 104 [2021-10-16 02:38:03,549 INFO L354 Elim1Store]: treesize reduction 92, result has 20.0 percent of original size [2021-10-16 02:38:03,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 108 treesize of output 84 [2021-10-16 02:38:03,618 INFO L354 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2021-10-16 02:38:03,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 66 [2021-10-16 02:38:03,625 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-16 02:38:03,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 32 [2021-10-16 02:38:03,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-10-16 02:38:03,716 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:38:03,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:38:03,825 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:03,826 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-16 02:38:03,828 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:03,828 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-16 02:38:04,140 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:04,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 351 treesize of output 350 [2021-10-16 02:38:04,153 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:04,156 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 540 [2021-10-16 02:38:08,540 INFO L354 Elim1Store]: treesize reduction 78, result has 39.1 percent of original size [2021-10-16 02:38:08,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 540 treesize of output 358 [2021-10-16 02:38:08,667 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:08,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 350 treesize of output 356 [2021-10-16 02:38:08,683 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:08,686 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 546 [2021-10-16 02:38:12,805 INFO L354 Elim1Store]: treesize reduction 78, result has 39.1 percent of original size [2021-10-16 02:38:12,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 546 treesize of output 364 [2021-10-16 02:38:12,867 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:12,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 356 treesize of output 362 [2021-10-16 02:38:12,897 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-16 02:38:12,993 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 8 treesize of output 4 [2021-10-16 02:38:13,279 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 8 treesize of output 4 [2021-10-16 02:38:13,621 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 8 treesize of output 4 [2021-10-16 02:38:13,841 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 8 treesize of output 4 [2021-10-16 02:38:13,959 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:13,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2021-10-16 02:38:14,144 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 8 treesize of output 4 [2021-10-16 02:38:14,448 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:14,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2021-10-16 02:38:14,600 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 8 treesize of output 4 [2021-10-16 02:38:15,303 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-10-16 02:38:15,368 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 8 treesize of output 4 [2021-10-16 02:38:15,451 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 8 treesize of output 4 [2021-10-16 02:38:19,821 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:19,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 122 [2021-10-16 02:38:22,446 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:22,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 147 treesize of output 167 [2021-10-16 02:38:25,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:38:25,275 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:38:25,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126767407] [2021-10-16 02:38:25,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126767407] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:38:25,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1182331866] [2021-10-16 02:38:25,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:38:25,276 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:38:25,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:38:25,277 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:38:25,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-10-16 02:38:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:38:25,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-16 02:38:25,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:38:25,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:38:25,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:38:25,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:38:25,968 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-10-16 02:38:25,968 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 111 treesize of output 89 [2021-10-16 02:38:25,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:38:25,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:38:25,991 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-10-16 02:38:25,992 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 89 treesize of output 67 [2021-10-16 02:38:25,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 78 [2021-10-16 02:38:26,009 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-10-16 02:38:26,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 85 [2021-10-16 02:38:26,482 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-16 02:38:26,483 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 109 treesize of output 100 [2021-10-16 02:38:26,509 INFO L354 Elim1Store]: treesize reduction 43, result has 20.4 percent of original size [2021-10-16 02:38:26,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 81 [2021-10-16 02:38:26,526 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-16 02:38:26,526 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 55 [2021-10-16 02:38:26,574 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-16 02:38:26,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 51 [2021-10-16 02:38:26,580 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-16 02:38:26,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 30 [2021-10-16 02:38:26,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-10-16 02:38:26,705 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:38:26,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:38:26,747 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:26,748 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-16 02:38:26,750 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:26,750 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-16 02:38:26,966 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:26,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 654 treesize of output 623 [2021-10-16 02:38:26,974 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:26,978 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1049 [2021-10-16 02:38:27,139 INFO L354 Elim1Store]: treesize reduction 60, result has 39.4 percent of original size [2021-10-16 02:38:27,140 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 1049 treesize of output 622 [2021-10-16 02:38:27,256 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:27,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 614 treesize of output 604 [2021-10-16 02:38:27,273 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:27,290 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1030 [2021-10-16 02:38:27,473 INFO L354 Elim1Store]: treesize reduction 51, result has 48.5 percent of original size [2021-10-16 02:38:27,474 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 1030 treesize of output 612 [2021-10-16 02:38:27,557 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:27,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 604 treesize of output 594 [2021-10-16 02:38:27,579 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-16 02:38:28,133 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:28,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 35 [2021-10-16 02:38:28,199 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 8 treesize of output 4 [2021-10-16 02:38:28,607 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:28,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 23 [2021-10-16 02:38:28,691 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 8 treesize of output 4 [2021-10-16 02:38:29,481 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:29,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 541 treesize of output 525 [2021-10-16 02:38:29,545 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:29,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 655 treesize of output 643 [2021-10-16 02:38:32,004 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:38:32,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1182331866] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:38:32,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552926185] [2021-10-16 02:38:32,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:38:32,005 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:38:32,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:38:32,007 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:38:32,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-16 02:38:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:38:32,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-16 02:38:32,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:38:32,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:38:32,679 INFO L354 Elim1Store]: treesize reduction 102, result has 15.7 percent of original size [2021-10-16 02:38:32,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 116 treesize of output 94 [2021-10-16 02:38:32,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 117 [2021-10-16 02:38:32,747 INFO L354 Elim1Store]: treesize reduction 150, result has 14.3 percent of original size [2021-10-16 02:38:32,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 124 treesize of output 90 [2021-10-16 02:38:32,766 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-10-16 02:38:32,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 105 [2021-10-16 02:38:33,372 INFO L354 Elim1Store]: treesize reduction 71, result has 17.4 percent of original size [2021-10-16 02:38:33,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 122 treesize of output 105 [2021-10-16 02:38:33,409 INFO L354 Elim1Store]: treesize reduction 65, result has 16.7 percent of original size [2021-10-16 02:38:33,409 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 105 treesize of output 83 [2021-10-16 02:38:33,436 INFO L354 Elim1Store]: treesize reduction 57, result has 16.2 percent of original size [2021-10-16 02:38:33,437 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 72 [2021-10-16 02:38:33,495 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-10-16 02:38:33,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 58 [2021-10-16 02:38:33,504 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-16 02:38:33,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 32 [2021-10-16 02:38:33,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-10-16 02:38:33,548 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:38:33,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:38:33,580 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:33,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-16 02:38:33,582 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:33,583 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-16 02:38:33,920 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:33,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 349 treesize of output 348 [2021-10-16 02:38:33,927 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:33,931 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 538 [2021-10-16 02:38:35,931 INFO L354 Elim1Store]: treesize reduction 78, result has 39.1 percent of original size [2021-10-16 02:38:35,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 538 treesize of output 356 [2021-10-16 02:38:35,938 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:35,943 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 538 [2021-10-16 02:38:40,093 INFO L354 Elim1Store]: treesize reduction 78, result has 39.1 percent of original size [2021-10-16 02:38:40,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 538 treesize of output 356 [2021-10-16 02:38:40,155 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:40,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 348 treesize of output 354 [2021-10-16 02:38:40,218 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:40,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 354 treesize of output 360 [2021-10-16 02:38:40,245 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-16 02:38:40,379 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 8 treesize of output 4 [2021-10-16 02:38:40,516 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 8 treesize of output 4 [2021-10-16 02:38:40,758 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:40,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 42 [2021-10-16 02:38:40,939 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 8 treesize of output 4 [2021-10-16 02:38:41,242 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:41,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2021-10-16 02:38:41,305 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 8 treesize of output 4 [2021-10-16 02:38:44,879 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 8 treesize of output 4 [2021-10-16 02:38:54,596 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:54,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 192 treesize of output 196 [2021-10-16 02:38:55,704 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:38:55,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 227 [2021-10-16 02:38:56,880 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:38:56,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552926185] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:38:56,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:38:56,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7, 8, 7, 8] total 19 [2021-10-16 02:38:56,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512026607] [2021-10-16 02:38:56,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-16 02:38:56,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:38:56,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-16 02:38:56,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=282, Unknown=1, NotChecked=0, Total=342 [2021-10-16 02:38:56,882 INFO L87 Difference]: Start difference. First operand 73 states and 102 transitions. Second operand has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:38:59,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:38:59,394 INFO L93 Difference]: Finished difference Result 133 states and 185 transitions. [2021-10-16 02:38:59,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-16 02:38:59,395 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-16 02:38:59,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:38:59,396 INFO L225 Difference]: With dead ends: 133 [2021-10-16 02:38:59,396 INFO L226 Difference]: Without dead ends: 115 [2021-10-16 02:38:59,397 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 82 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 4045.9ms TimeCoverageRelationStatistics Valid=122, Invalid=579, Unknown=1, NotChecked=0, Total=702 [2021-10-16 02:38:59,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-16 02:38:59,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 91. [2021-10-16 02:38:59,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.4) internal successors, (126), 90 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:38:59,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 126 transitions. [2021-10-16 02:38:59,409 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 126 transitions. Word has length 18 [2021-10-16 02:38:59,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:38:59,409 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 126 transitions. [2021-10-16 02:38:59,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:38:59,410 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 126 transitions. [2021-10-16 02:38:59,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 02:38:59,411 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:38:59,411 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:38:59,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-10-16 02:38:59,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-10-16 02:38:59,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-16 02:39:00,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:39:00,015 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:39:00,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:39:00,015 INFO L82 PathProgramCache]: Analyzing trace with hash -776135564, now seen corresponding path program 3 times [2021-10-16 02:39:00,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:39:00,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917690510] [2021-10-16 02:39:00,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:39:00,015 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:39:00,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:39:00,016 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:39:00,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-16 02:39:00,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-16 02:39:00,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:39:00,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-16 02:39:00,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:39:00,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:39:00,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:39:00,576 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:00,577 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-16 02:39:00,579 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:00,580 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-16 02:39:00,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:00,730 INFO L354 Elim1Store]: treesize reduction 118, result has 33.7 percent of original size [2021-10-16 02:39:00,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 70 [2021-10-16 02:39:00,819 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-16 02:39:00,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-10-16 02:39:00,952 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:00,953 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-16 02:39:00,956 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:00,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-10-16 02:39:01,113 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-10-16 02:39:01,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 75 [2021-10-16 02:39:01,149 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-16 02:39:01,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 49 [2021-10-16 02:39:01,243 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:01,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-16 02:39:01,248 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:01,248 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-10-16 02:39:01,404 INFO L354 Elim1Store]: treesize reduction 93, result has 29.0 percent of original size [2021-10-16 02:39:01,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 67 [2021-10-16 02:39:01,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-10-16 02:39:01,632 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:39:01,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:39:01,731 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:01,732 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-16 02:39:01,735 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:01,736 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-16 02:39:03,787 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_77 (_ BitVec 32)) (v_DerPreprocessor_78 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_78 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_78)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_78 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_78) (_ bv4 32) v_DerPreprocessor_77) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)))) is different from false [2021-10-16 02:39:03,882 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:03,883 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-10-16 02:39:03,885 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:03,886 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-10-16 02:39:06,106 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_80 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_79 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_46 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_64 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_58 (_ BitVec 32)) (v_DerPreprocessor_79 (_ BitVec 32)) (v_DerPreprocessor_77 (_ BitVec 32)) (v_DerPreprocessor_78 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_78 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt v_ULTIMATE.start_main_~x~0_46 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_80)))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_58 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_58) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_79) v_DerPreprocessor_79) v_ULTIMATE.start_main_~p~0.offset_79 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_64) v_DerPreprocessor_78))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_78 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_78) (_ bv4 32) v_DerPreprocessor_77) (_ bv0 32) v_ULTIMATE.start_main_~x~0_46))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (bvsgt v_ULTIMATE.start_main_~x~0_46 (_ bv20 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_58))))))) is different from false [2021-10-16 02:39:06,584 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:06,585 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-10-16 02:39:06,588 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:06,589 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 234 [2021-10-16 02:39:09,242 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_79 (_ BitVec 32)) (v_DerPreprocessor_82 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_48 (_ BitVec 32)) (v_DerPreprocessor_80 (_ BitVec 32)) (v_DerPreprocessor_81 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_46 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_80 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_64 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_58 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_59 (_ BitVec 32)) (v_DerPreprocessor_79 (_ BitVec 32)) (v_DerPreprocessor_77 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_66 (_ BitVec 32)) (v_DerPreprocessor_78 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_78 (_ BitVec 32))) (or (bvslt v_ULTIMATE.start_main_~x~0_46 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (let ((.cse1 (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_82)))) (store .cse2 v_ULTIMATE.start_main_~tail~0.base_59 (store (store (store (select .cse2 v_ULTIMATE.start_main_~tail~0.base_59) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_80) v_DerPreprocessor_81) v_ULTIMATE.start_main_~p~0.offset_80 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_66) v_DerPreprocessor_80))))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_58 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_58) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_79) v_DerPreprocessor_79) v_ULTIMATE.start_main_~p~0.offset_79 v_ULTIMATE.start_main_~x~0_48) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_64) v_DerPreprocessor_78))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_78 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_78) (_ bv4 32) v_DerPreprocessor_77) (_ bv0 32) v_ULTIMATE.start_main_~x~0_46))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_main_~tail~0.base_59 (_ bv1 1)) v_ULTIMATE.start_main_~tail~0.base_58)))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_59)))))) (bvsgt v_ULTIMATE.start_main_~x~0_46 (_ bv20 32)))) is different from false [2021-10-16 02:39:10,655 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2021-10-16 02:39:10,655 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:39:10,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1917690510] [2021-10-16 02:39:10,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1917690510] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:39:10,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [672053949] [2021-10-16 02:39:10,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:39:10,656 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:39:10,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:39:10,671 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:39:10,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-10-16 02:39:11,271 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:39:11,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438251053] [2021-10-16 02:39:11,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:39:11,272 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:39:11,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:39:11,273 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:39:11,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 1 [2021-10-16 02:39:11,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-16 02:39:12,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-16 02:39:12,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:39:12,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-16 02:39:12,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:39:12,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:39:12,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:39:12,710 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:12,711 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-16 02:39:12,714 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:12,715 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-16 02:39:12,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:12,904 INFO L354 Elim1Store]: treesize reduction 118, result has 33.7 percent of original size [2021-10-16 02:39:12,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 70 [2021-10-16 02:39:12,966 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-16 02:39:12,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-10-16 02:39:13,096 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:13,097 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-10-16 02:39:13,100 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:13,101 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-16 02:39:13,218 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-10-16 02:39:13,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 82 [2021-10-16 02:39:13,286 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-10-16 02:39:13,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 54 treesize of output 71 [2021-10-16 02:39:13,712 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:13,715 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-16 02:39:13,720 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:13,722 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-10-16 02:39:13,834 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-10-16 02:39:13,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 109 [2021-10-16 02:39:13,880 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-10-16 02:39:13,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 81 treesize of output 85 [2021-10-16 02:39:14,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-10-16 02:39:14,030 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:39:14,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:39:14,073 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:14,074 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:39:14,076 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:14,077 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:39:16,114 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~p~0.base_83 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_83 (_ BitVec 32)) (v_DerPreprocessor_89 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_DerPreprocessor_90 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_83))))) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_90)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_83 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_83) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_83) v_DerPreprocessor_89) v_ULTIMATE.start_main_~p~0.offset_83 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) is different from false [2021-10-16 02:39:16,216 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:16,217 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-16 02:39:16,221 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:16,222 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-10-16 02:39:18,395 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_84 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_52 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_83 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_DerPreprocessor_90 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_65 (_ BitVec 32)) (v_DerPreprocessor_91 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_83 (_ BitVec 32)) (v_DerPreprocessor_92 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_73 (_ BitVec 32)) (v_DerPreprocessor_89 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_92)))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_65 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_65) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_84) v_DerPreprocessor_91) v_ULTIMATE.start_main_~p~0.offset_84 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_73) v_DerPreprocessor_90))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_83 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_83) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_83) v_DerPreprocessor_89) v_ULTIMATE.start_main_~p~0.offset_83 v_ULTIMATE.start_main_~x~0_52))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_65))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_main_~tail~0.base_65 (_ bv1 1)) v_ULTIMATE.start_main_~p~0.base_83)))))))) is different from false [2021-10-16 02:39:18,722 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:18,723 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-10-16 02:39:18,726 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:18,727 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 245 [2021-10-16 02:39:21,388 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_84 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_52 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_83 (_ BitVec 32)) (v_DerPreprocessor_90 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_54 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_85 (_ BitVec 32)) (v_DerPreprocessor_93 (_ BitVec 32)) (v_DerPreprocessor_94 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_65 (_ BitVec 32)) (v_DerPreprocessor_91 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_83 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_66 (_ BitVec 32)) (v_DerPreprocessor_92 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_75 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_73 (_ BitVec 32)) (v_DerPreprocessor_89 (_ BitVec 32))) (let ((.cse3 (store |c_#valid| v_ULTIMATE.start_main_~tail~0.base_66 (_ bv1 1)))) (or (bvsge (select (select (let ((.cse0 (let ((.cse1 (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_94)))) (store .cse2 v_ULTIMATE.start_main_~tail~0.base_66 (store (store (store (select .cse2 v_ULTIMATE.start_main_~tail~0.base_66) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_85) v_DerPreprocessor_93) v_ULTIMATE.start_main_~p~0.offset_85 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_75) v_DerPreprocessor_92))))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_65 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_65) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_84) v_DerPreprocessor_91) v_ULTIMATE.start_main_~p~0.offset_84 v_ULTIMATE.start_main_~x~0_54) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_73) v_DerPreprocessor_90))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_83 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_83) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_83) v_DerPreprocessor_89) v_ULTIMATE.start_main_~p~0.offset_83 v_ULTIMATE.start_main_~x~0_52))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select .cse3 v_ULTIMATE.start_main_~tail~0.base_65)))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_66)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select (store .cse3 v_ULTIMATE.start_main_~tail~0.base_65 (_ bv1 1)) v_ULTIMATE.start_main_~p~0.base_83))))))))))) is different from false [2021-10-16 02:39:22,610 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2021-10-16 02:39:22,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438251053] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:39:22,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2021-10-16 02:39:22,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8] total 19 [2021-10-16 02:39:22,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980459085] [2021-10-16 02:39:22,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-16 02:39:22,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:39:22,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-16 02:39:22,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=118, Unknown=6, NotChecked=162, Total=342 [2021-10-16 02:39:22,613 INFO L87 Difference]: Start difference. First operand 91 states and 126 transitions. Second operand has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:39:29,624 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) (_ bv0 32)))) (and (not (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~tail~0.base)) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_77 (_ BitVec 32)) (v_DerPreprocessor_78 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_78 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_78)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_78 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_78) (_ bv4 32) v_DerPreprocessor_77) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~tail~0.base))))) (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (forall ((v_ULTIMATE.start_main_~p~0.base_83 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_83 (_ BitVec 32)) (v_DerPreprocessor_89 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_DerPreprocessor_90 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_83))))) (bvsge (select (select (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_90)))) (store .cse1 v_ULTIMATE.start_main_~p~0.base_83 (store (store (select .cse1 v_ULTIMATE.start_main_~p~0.base_83) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_83) v_DerPreprocessor_89) v_ULTIMATE.start_main_~p~0.offset_83 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) (not (bvslt .cse2 (_ bv10 32))) (exists ((v_arrayElimCell_180 (_ BitVec 1)) (v_ULTIMATE.start_main_~tail~0.base_62 (_ BitVec 32))) (let ((.cse3 (bvneg v_arrayElimCell_180))) (and (not (= c_ULTIMATE.start_main_~tail~0.base v_ULTIMATE.start_main_~tail~0.base_62)) (not (= c_ULTIMATE.start_main_~list~0.base v_ULTIMATE.start_main_~tail~0.base_62)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg .cse3)))) (= (_ bv0 1) (bvadd (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_62) .cse3))))) (exists ((v_arrayElimCell_181 (_ BitVec 1)) (v_arrayElimCell_168 (_ BitVec 1))) (let ((.cse5 (bvneg (bvneg (bvneg v_arrayElimCell_168)))) (.cse4 (bvneg v_arrayElimCell_181))) (and (= (_ bv0 1) (bvadd .cse4 (select |c_#valid| c_ULTIMATE.start_main_~list~0.base))) (= (_ bv0 1) (bvadd .cse5 (_ bv1 1))) (= (_ bv0 1) (bvadd (bvneg .cse5) (bvneg (bvneg .cse4))))))) (= c_ULTIMATE.start_main_~p~0.offset (_ bv0 32)) (not (bvsgt .cse2 (_ bv20 32))))) is different from false [2021-10-16 02:39:31,714 WARN L838 $PredicateComparison]: unable to prove that (and (not (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~tail~0.base)) (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_77 (_ BitVec 32)) (v_DerPreprocessor_78 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_78 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_78)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_78 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_78) (_ bv4 32) v_DerPreprocessor_77) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~tail~0.base))))) (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (forall ((v_ULTIMATE.start_main_~p~0.base_83 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_83 (_ BitVec 32)) (v_DerPreprocessor_89 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_DerPreprocessor_90 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_83))))) (bvsge (select (select (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_90)))) (store .cse1 v_ULTIMATE.start_main_~p~0.base_83 (store (store (select .cse1 v_ULTIMATE.start_main_~p~0.base_83) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_83) v_DerPreprocessor_89) v_ULTIMATE.start_main_~p~0.offset_83 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) (exists ((v_arrayElimCell_180 (_ BitVec 1)) (v_ULTIMATE.start_main_~tail~0.base_62 (_ BitVec 32))) (let ((.cse2 (bvneg v_arrayElimCell_180))) (and (not (= c_ULTIMATE.start_main_~tail~0.base v_ULTIMATE.start_main_~tail~0.base_62)) (not (= c_ULTIMATE.start_main_~list~0.base v_ULTIMATE.start_main_~tail~0.base_62)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg .cse2)))) (= (_ bv0 1) (bvadd (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_62) .cse2))))) (exists ((v_arrayElimCell_181 (_ BitVec 1)) (v_arrayElimCell_168 (_ BitVec 1))) (let ((.cse4 (bvneg (bvneg (bvneg v_arrayElimCell_168)))) (.cse3 (bvneg v_arrayElimCell_181))) (and (= (_ bv0 1) (bvadd .cse3 (select |c_#valid| c_ULTIMATE.start_main_~list~0.base))) (= (_ bv0 1) (bvadd .cse4 (_ bv1 1))) (= (_ bv0 1) (bvadd (bvneg .cse4) (bvneg (bvneg .cse3)))))))) is different from false [2021-10-16 02:39:33,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:39:33,562 INFO L93 Difference]: Finished difference Result 192 states and 269 transitions. [2021-10-16 02:39:33,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-16 02:39:33,563 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-16 02:39:33,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:39:33,565 INFO L225 Difference]: With dead ends: 192 [2021-10-16 02:39:33,565 INFO L226 Difference]: Without dead ends: 183 [2021-10-16 02:39:33,566 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 21304.6ms TimeCoverageRelationStatistics Valid=237, Invalid=488, Unknown=9, NotChecked=456, Total=1190 [2021-10-16 02:39:33,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-10-16 02:39:33,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 96. [2021-10-16 02:39:33,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.4210526315789473) internal successors, (135), 95 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:39:33,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 135 transitions. [2021-10-16 02:39:33,579 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 135 transitions. Word has length 18 [2021-10-16 02:39:33,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:39:33,580 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 135 transitions. [2021-10-16 02:39:33,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:39:33,580 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 135 transitions. [2021-10-16 02:39:33,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-16 02:39:33,581 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:39:33,581 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:39:33,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-16 02:39:33,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-16 02:39:33,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:39:33,996 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:39:33,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:39:33,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1147499445, now seen corresponding path program 1 times [2021-10-16 02:39:33,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:39:33,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [275326981] [2021-10-16 02:39:33,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:39:33,997 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:39:33,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:39:33,998 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:39:33,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-16 02:39:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:39:34,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-16 02:39:34,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:39:34,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 20 [2021-10-16 02:39:35,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2021-10-16 02:39:35,423 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:39:35,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:39:37,102 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-10-16 02:39:37,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 33 [2021-10-16 02:39:37,173 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:39:37,173 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:39:37,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [275326981] [2021-10-16 02:39:37,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [275326981] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:39:37,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1279664054] [2021-10-16 02:39:37,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:39:37,174 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:39:37,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:39:37,187 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:39:37,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-10-16 02:39:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:39:37,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-16 02:39:37,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:39:38,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 20 [2021-10-16 02:39:39,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2021-10-16 02:39:39,849 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:39:39,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:39:40,192 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-10-16 02:39:40,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 33 [2021-10-16 02:39:40,263 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:39:40,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1279664054] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:39:40,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45320921] [2021-10-16 02:39:40,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:39:40,264 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:39:40,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:39:40,275 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:39:40,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-16 02:39:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:39:40,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-16 02:39:40,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:39:40,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 20 [2021-10-16 02:39:41,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2021-10-16 02:39:41,822 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:39:41,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:39:42,292 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-10-16 02:39:42,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 33 [2021-10-16 02:39:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:39:42,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45320921] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:39:42,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:39:42,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 11, 9, 10, 9] total 23 [2021-10-16 02:39:42,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701399873] [2021-10-16 02:39:42,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-16 02:39:42,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:39:42,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-16 02:39:42,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2021-10-16 02:39:42,360 INFO L87 Difference]: Start difference. First operand 96 states and 135 transitions. Second operand has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 23 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:39:51,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:39:51,654 INFO L93 Difference]: Finished difference Result 195 states and 270 transitions. [2021-10-16 02:39:51,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-16 02:39:51,661 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 23 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-16 02:39:51,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:39:51,662 INFO L225 Difference]: With dead ends: 195 [2021-10-16 02:39:51,662 INFO L226 Difference]: Without dead ends: 178 [2021-10-16 02:39:51,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 8964.0ms TimeCoverageRelationStatistics Valid=380, Invalid=1102, Unknown=0, NotChecked=0, Total=1482 [2021-10-16 02:39:51,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-16 02:39:51,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 113. [2021-10-16 02:39:51,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.4464285714285714) internal successors, (162), 112 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:39:51,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 162 transitions. [2021-10-16 02:39:51,678 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 162 transitions. Word has length 20 [2021-10-16 02:39:51,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:39:51,678 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 162 transitions. [2021-10-16 02:39:51,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 23 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:39:51,679 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 162 transitions. [2021-10-16 02:39:51,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-16 02:39:51,680 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:39:51,680 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:39:51,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-16 02:39:51,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-16 02:39:52,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-10-16 02:39:52,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:39:52,287 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:39:52,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:39:52,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1494005967, now seen corresponding path program 2 times [2021-10-16 02:39:52,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:39:52,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687613071] [2021-10-16 02:39:52,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:39:52,288 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:39:52,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:39:52,289 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:39:52,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-16 02:39:52,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:39:52,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:39:52,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-16 02:39:52,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:39:52,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:39:52,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:39:52,964 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:52,964 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-16 02:39:52,966 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:52,967 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-16 02:39:52,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:53,133 INFO L354 Elim1Store]: treesize reduction 118, result has 33.7 percent of original size [2021-10-16 02:39:53,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 70 [2021-10-16 02:39:53,201 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-16 02:39:53,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-10-16 02:39:53,330 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:53,331 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-10-16 02:39:53,334 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:53,335 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-10-16 02:39:53,443 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-10-16 02:39:53,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 81 [2021-10-16 02:39:53,473 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-16 02:39:53,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 55 [2021-10-16 02:39:53,577 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:53,578 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-10-16 02:39:53,657 INFO L354 Elim1Store]: treesize reduction 54, result has 31.6 percent of original size [2021-10-16 02:39:53,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 51 [2021-10-16 02:39:53,733 INFO L354 Elim1Store]: treesize reduction 46, result has 40.3 percent of original size [2021-10-16 02:39:53,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 64 [2021-10-16 02:39:53,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-10-16 02:39:53,928 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:39:53,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:39:54,018 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:54,019 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-16 02:39:54,022 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:54,022 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-16 02:39:56,062 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~p~0.base_97 (_ BitVec 32)) (v_DerPreprocessor_100 (_ BitVec 32)) (v_DerPreprocessor_101 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)) (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_101)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_97 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_97) (_ bv4 32) v_DerPreprocessor_100) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) is different from false [2021-10-16 02:39:56,234 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:56,235 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-16 02:39:56,237 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:56,239 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-10-16 02:39:58,571 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~tail~0.offset_82 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_97 (_ BitVec 32)) (v_DerPreprocessor_100 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_59 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_101 (_ BitVec 32)) (v_DerPreprocessor_102 (_ BitVec 32)) (v_DerPreprocessor_103 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_98 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_72 (_ BitVec 32))) (or (bvslt v_ULTIMATE.start_main_~x~0_59 (_ bv10 32)) (bvsgt v_ULTIMATE.start_main_~x~0_59 (_ bv20 32)) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_103)))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_72 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_72) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_98) v_DerPreprocessor_102) v_ULTIMATE.start_main_~p~0.offset_98 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_82) v_DerPreprocessor_101))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_97 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_97) (_ bv4 32) v_DerPreprocessor_100) (_ bv0 32) v_ULTIMATE.start_main_~x~0_59))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_72)))))))) is different from false [2021-10-16 02:39:59,055 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:59,056 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-10-16 02:39:59,059 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:39:59,059 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 234 [2021-10-16 02:40:01,818 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_100 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_101 (_ BitVec 32)) (v_DerPreprocessor_102 (_ BitVec 32)) (v_DerPreprocessor_103 (_ BitVec 32)) (v_DerPreprocessor_104 (_ BitVec 32)) (v_DerPreprocessor_105 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_61 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_99 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_98 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_82 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_97 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_59 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_84 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_72 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_73 (_ BitVec 32))) (or (bvslt v_ULTIMATE.start_main_~x~0_59 (_ bv10 32)) (bvsge (select (select (let ((.cse0 (let ((.cse1 (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_105)))) (store .cse2 v_ULTIMATE.start_main_~tail~0.base_73 (store (store (store (select .cse2 v_ULTIMATE.start_main_~tail~0.base_73) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_99) v_DerPreprocessor_104) v_ULTIMATE.start_main_~p~0.offset_99 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_84) v_DerPreprocessor_103))))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_72 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_72) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_98) v_DerPreprocessor_102) v_ULTIMATE.start_main_~p~0.offset_98 v_ULTIMATE.start_main_~x~0_61) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_82) v_DerPreprocessor_101))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_97 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_97) (_ bv4 32) v_DerPreprocessor_100) (_ bv0 32) v_ULTIMATE.start_main_~x~0_59))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_main_~tail~0.base_73 (_ bv1 1)) v_ULTIMATE.start_main_~tail~0.base_72))))))) (bvsgt v_ULTIMATE.start_main_~x~0_59 (_ bv20 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_73))))))) is different from false [2021-10-16 02:40:03,407 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 20 not checked. [2021-10-16 02:40:03,408 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:40:03,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687613071] [2021-10-16 02:40:03,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687613071] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:40:03,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1010121431] [2021-10-16 02:40:03,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:40:03,408 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:40:03,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:40:03,409 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:40:03,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-10-16 02:40:04,116 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:40:04,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032459527] [2021-10-16 02:40:04,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:40:04,117 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:40:04,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:40:04,118 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:40:04,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 1 [2021-10-16 02:40:04,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-16 02:40:04,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:40:04,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:40:04,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-16 02:40:04,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:40:04,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 02:40:04,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:40:04,849 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:40:04,850 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-16 02:40:04,852 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:40:04,853 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-16 02:40:04,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:05,060 INFO L354 Elim1Store]: treesize reduction 118, result has 33.7 percent of original size [2021-10-16 02:40:05,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 70 [2021-10-16 02:40:05,125 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-16 02:40:05,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-10-16 02:40:05,250 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:40:05,250 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-10-16 02:40:05,255 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:40:05,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-16 02:40:05,367 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-10-16 02:40:05,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 86 [2021-10-16 02:40:05,421 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-10-16 02:40:05,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 58 treesize of output 75 [2021-10-16 02:40:05,863 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:40:05,864 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-10-16 02:40:05,869 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:40:05,869 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-16 02:40:05,985 INFO L354 Elim1Store]: treesize reduction 195, result has 11.8 percent of original size [2021-10-16 02:40:05,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 108 [2021-10-16 02:40:06,029 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-10-16 02:40:06,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 84 [2021-10-16 02:40:06,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-10-16 02:40:06,151 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:40:06,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:40:06,190 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:40:06,190 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-16 02:40:06,192 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:40:06,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-16 02:40:08,230 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_112 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_113 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_102 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_102 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_113)))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_102 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_102) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_102) v_DerPreprocessor_112) v_ULTIMATE.start_main_~p~0.offset_102 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_102)))))) is different from false [2021-10-16 02:40:08,407 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:40:08,408 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-16 02:40:08,411 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:40:08,415 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-10-16 02:40:10,566 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~p~0.offset_103 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_112 (_ BitVec 32)) (v_DerPreprocessor_113 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_102 (_ BitVec 32)) (v_DerPreprocessor_114 (_ BitVec 32)) (v_DerPreprocessor_115 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_66 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_102 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_91 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_79 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_main_~tail~0.base_79 (_ bv1 1)) v_ULTIMATE.start_main_~p~0.base_102))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_79)))) (bvsge (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_115)))) (store .cse1 v_ULTIMATE.start_main_~tail~0.base_79 (store (store (store (select .cse1 v_ULTIMATE.start_main_~tail~0.base_79) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_103) v_DerPreprocessor_114) v_ULTIMATE.start_main_~p~0.offset_103 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_91) v_DerPreprocessor_113))))) (store .cse0 v_ULTIMATE.start_main_~p~0.base_102 (store (store (select .cse0 v_ULTIMATE.start_main_~p~0.base_102) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_102) v_DerPreprocessor_112) v_ULTIMATE.start_main_~p~0.offset_102 v_ULTIMATE.start_main_~x~0_66))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) is different from false [2021-10-16 02:40:10,933 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:40:10,934 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-10-16 02:40:10,938 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:40:10,939 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 242 [2021-10-16 02:40:13,677 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~p~0.offset_104 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_103 (_ BitVec 32)) (v_DerPreprocessor_112 (_ BitVec 32)) (v_DerPreprocessor_113 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_102 (_ BitVec 32)) (v_DerPreprocessor_114 (_ BitVec 32)) (v_DerPreprocessor_115 (_ BitVec 32)) (v_DerPreprocessor_116 (_ BitVec 32)) (v_DerPreprocessor_117 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_66 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_102 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_93 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0_68 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.offset_91 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_79 (_ BitVec 32)) (v_ULTIMATE.start_main_~tail~0.base_80 (_ BitVec 32))) (let ((.cse0 (store |c_#valid| v_ULTIMATE.start_main_~tail~0.base_80 (_ bv1 1)))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select .cse0 v_ULTIMATE.start_main_~tail~0.base_79)))))) (bvsge (select (select (let ((.cse1 (let ((.cse2 (let ((.cse3 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_117)))) (store .cse3 v_ULTIMATE.start_main_~tail~0.base_80 (store (store (store (select .cse3 v_ULTIMATE.start_main_~tail~0.base_80) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_104) v_DerPreprocessor_116) v_ULTIMATE.start_main_~p~0.offset_104 ULTIMATE.start_main_~x~0) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_93) v_DerPreprocessor_115))))) (store .cse2 v_ULTIMATE.start_main_~tail~0.base_79 (store (store (store (select .cse2 v_ULTIMATE.start_main_~tail~0.base_79) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_103) v_DerPreprocessor_114) v_ULTIMATE.start_main_~p~0.offset_103 v_ULTIMATE.start_main_~x~0_68) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~tail~0.offset_91) v_DerPreprocessor_113))))) (store .cse1 v_ULTIMATE.start_main_~p~0.base_102 (store (store (select .cse1 v_ULTIMATE.start_main_~p~0.base_102) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_102) v_DerPreprocessor_112) v_ULTIMATE.start_main_~p~0.offset_102 v_ULTIMATE.start_main_~x~0_66))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_80)))) (not (= (_ bv0 1) (bvneg (bvneg (select (store .cse0 v_ULTIMATE.start_main_~tail~0.base_79 (_ bv1 1)) v_ULTIMATE.start_main_~p~0.base_102)))))))) is different from false [2021-10-16 02:40:14,891 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 20 not checked. [2021-10-16 02:40:14,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032459527] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:40:14,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2021-10-16 02:40:14,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8] total 19 [2021-10-16 02:40:14,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248886967] [2021-10-16 02:40:14,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-16 02:40:14,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:40:14,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-16 02:40:14,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=118, Unknown=6, NotChecked=162, Total=342 [2021-10-16 02:40:14,893 INFO L87 Difference]: Start difference. First operand 113 states and 162 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:40:24,258 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| c_ULTIMATE.start_main_~p~0.base) (_ bv0 32)))) (and (not (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~tail~0.base)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~tail~0.base))))) (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (exists ((v_arrayElimCell_202 (_ BitVec 1)) (v_arrayElimCell_217 (_ BitVec 1))) (let ((.cse0 (bvneg (bvneg (bvneg (bvneg v_arrayElimCell_202))))) (.cse1 (bvneg v_arrayElimCell_217))) (and (= (_ bv0 1) (bvadd (bvneg .cse0) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse0 (bvneg (bvneg .cse1)))) (= (_ bv0 1) (bvadd .cse1 (select |c_#valid| c_ULTIMATE.start_main_~list~0.base)))))) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (bvslt .cse2 (_ bv10 32))) (exists ((v_ULTIMATE.start_main_~tail~0.base_76 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_76))))) (_ bv1 1))) (not (= c_ULTIMATE.start_main_~list~0.base v_ULTIMATE.start_main_~tail~0.base_76)) (not (= c_ULTIMATE.start_main_~tail~0.base v_ULTIMATE.start_main_~tail~0.base_76)))) (forall ((v_ULTIMATE.start_main_~p~0.base_97 (_ BitVec 32)) (v_DerPreprocessor_100 (_ BitVec 32)) (v_DerPreprocessor_101 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)) (bvsge (select (select (let ((.cse3 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_101)))) (store .cse3 v_ULTIMATE.start_main_~p~0.base_97 (store (store (select .cse3 v_ULTIMATE.start_main_~p~0.base_97) (_ bv4 32) v_DerPreprocessor_100) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) (= c_ULTIMATE.start_main_~p~0.offset (_ bv0 32)) (not (bvsgt .cse2 (_ bv20 32))) (forall ((v_DerPreprocessor_112 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_113 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_102 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_102 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse4 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_113)))) (store .cse4 v_ULTIMATE.start_main_~p~0.base_102 (store (store (select .cse4 v_ULTIMATE.start_main_~p~0.base_102) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_102) v_DerPreprocessor_112) v_ULTIMATE.start_main_~p~0.offset_102 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_102)))))))) is different from false [2021-10-16 02:40:26,376 WARN L838 $PredicateComparison]: unable to prove that (and (not (= c_ULTIMATE.start_main_~list~0.base c_ULTIMATE.start_main_~tail~0.base)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~tail~0.base))))) (= c_ULTIMATE.start_main_~list~0.offset (_ bv0 32)) (exists ((v_arrayElimCell_202 (_ BitVec 1)) (v_arrayElimCell_217 (_ BitVec 1))) (let ((.cse0 (bvneg (bvneg (bvneg (bvneg v_arrayElimCell_202))))) (.cse1 (bvneg v_arrayElimCell_217))) (and (= (_ bv0 1) (bvadd (bvneg .cse0) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse0 (bvneg (bvneg .cse1)))) (= (_ bv0 1) (bvadd .cse1 (select |c_#valid| c_ULTIMATE.start_main_~list~0.base)))))) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (exists ((v_ULTIMATE.start_main_~tail~0.base_76 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_main_~tail~0.base_76))))) (_ bv1 1))) (not (= c_ULTIMATE.start_main_~list~0.base v_ULTIMATE.start_main_~tail~0.base_76)) (not (= c_ULTIMATE.start_main_~tail~0.base v_ULTIMATE.start_main_~tail~0.base_76)))) (forall ((v_ULTIMATE.start_main_~p~0.base_97 (_ BitVec 32)) (v_DerPreprocessor_100 (_ BitVec 32)) (v_DerPreprocessor_101 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32))) (or (bvslt ULTIMATE.start_main_~x~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~x~0 (_ bv20 32)) (bvsge (select (select (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_101)))) (store .cse2 v_ULTIMATE.start_main_~p~0.base_97 (store (store (select .cse2 v_ULTIMATE.start_main_~p~0.base_97) (_ bv4 32) v_DerPreprocessor_100) (_ bv0 32) ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)))) (forall ((v_DerPreprocessor_112 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_113 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_102 (_ BitVec 32)) (ULTIMATE.start_main_~tail~0.offset (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_102 (_ BitVec 32))) (or (bvsge (select (select (let ((.cse3 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~tail~0.offset) v_DerPreprocessor_113)))) (store .cse3 v_ULTIMATE.start_main_~p~0.base_102 (store (store (select .cse3 v_ULTIMATE.start_main_~p~0.base_102) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_102) v_DerPreprocessor_112) v_ULTIMATE.start_main_~p~0.offset_102 ULTIMATE.start_main_~x~0))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_102))))))) is different from false [2021-10-16 02:40:27,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:40:27,843 INFO L93 Difference]: Finished difference Result 236 states and 334 transitions. [2021-10-16 02:40:27,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-16 02:40:27,844 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-16 02:40:27,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:40:27,845 INFO L225 Difference]: With dead ends: 236 [2021-10-16 02:40:27,845 INFO L226 Difference]: Without dead ends: 204 [2021-10-16 02:40:27,846 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 23286.5ms TimeCoverageRelationStatistics Valid=237, Invalid=488, Unknown=9, NotChecked=456, Total=1190 [2021-10-16 02:40:27,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-10-16 02:40:27,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 105. [2021-10-16 02:40:27,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.4230769230769231) internal successors, (148), 104 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:40:27,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 148 transitions. [2021-10-16 02:40:27,859 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 148 transitions. Word has length 20 [2021-10-16 02:40:27,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:40:27,859 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 148 transitions. [2021-10-16 02:40:27,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:40:27,860 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 148 transitions. [2021-10-16 02:40:27,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-16 02:40:27,861 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:40:27,861 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:40:27,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-16 02:40:28,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-16 02:40:28,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:40:28,271 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:40:28,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:40:28,271 INFO L82 PathProgramCache]: Analyzing trace with hash 232192162, now seen corresponding path program 2 times [2021-10-16 02:40:28,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:40:28,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088791180] [2021-10-16 02:40:28,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:40:28,272 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:40:28,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:40:28,274 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:40:28,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-16 02:40:28,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:40:28,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:40:28,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-16 02:40:28,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:40:28,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:40:29,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:40:29,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:29,047 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-10-16 02:40:29,047 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 40 treesize of output 19 [2021-10-16 02:40:29,088 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-16 02:40:29,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-10-16 02:40:29,112 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 0 case distinctions, treesize of input 20 treesize of output 16 [2021-10-16 02:40:29,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:29,129 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 40 treesize of output 19 [2021-10-16 02:40:30,305 INFO L354 Elim1Store]: treesize reduction 307, result has 10.0 percent of original size [2021-10-16 02:40:30,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 371 treesize of output 241 [2021-10-16 02:40:30,576 INFO L354 Elim1Store]: treesize reduction 323, result has 9.0 percent of original size [2021-10-16 02:40:30,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 463 treesize of output 317 [2021-10-16 02:40:30,582 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:40:30,583 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 343 [2021-10-16 02:40:30,587 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:40:30,592 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 350 [2021-10-16 02:40:30,710 INFO L354 Elim1Store]: treesize reduction 955, result has 8.3 percent of original size [2021-10-16 02:40:30,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 350 treesize of output 302 [2021-10-16 02:40:30,748 INFO L354 Elim1Store]: treesize reduction 22, result has 69.9 percent of original size [2021-10-16 02:40:30,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 206 treesize of output 226 [2021-10-16 02:40:30,749 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-16 02:40:31,516 INFO L354 Elim1Store]: treesize reduction 71, result has 17.4 percent of original size [2021-10-16 02:40:31,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 201 treesize of output 184 [2021-10-16 02:40:31,585 INFO L354 Elim1Store]: treesize reduction 122, result has 14.7 percent of original size [2021-10-16 02:40:31,586 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 6 new quantified variables, introduced 5 case distinctions, treesize of input 184 treesize of output 125 [2021-10-16 02:40:31,645 INFO L354 Elim1Store]: treesize reduction 112, result has 14.5 percent of original size [2021-10-16 02:40:31,645 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 6 new quantified variables, introduced 5 case distinctions, treesize of input 169 treesize of output 130 [2021-10-16 02:40:31,772 INFO L354 Elim1Store]: treesize reduction 45, result has 8.2 percent of original size [2021-10-16 02:40:31,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 168 treesize of output 97 [2021-10-16 02:40:31,788 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-10-16 02:40:31,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 48 [2021-10-16 02:40:31,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-10-16 02:40:31,913 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:40:31,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:40:32,025 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:40:32,025 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-16 02:40:32,028 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:40:32,028 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-16 02:40:32,259 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:40:32,261 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-10-16 02:40:32,264 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:40:32,266 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 228 [2021-10-16 02:40:32,273 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:40:32,274 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 220 [2021-10-16 02:40:32,278 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:40:32,279 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-10-16 02:40:34,705 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_121 (_ BitVec 32)) (v_DerPreprocessor_122 (_ BitVec 32)) (v_DerPreprocessor_123 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_124 (_ BitVec 32)) (v_DerPreprocessor_125 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_109 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_109 (_ BitVec 32)) (v_DerPreprocessor_120 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_109)))) (bvsge (let ((.cse3 (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_109)) (.cse4 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset)) (.cse6 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) .cse4 v_DerPreprocessor_123)))) (store .cse2 v_ULTIMATE.start_main_~p~0.base_109 (store (store (select .cse2 v_ULTIMATE.start_main_~p~0.base_109) .cse3 v_DerPreprocessor_122) v_ULTIMATE.start_main_~p~0.offset_109 ULTIMATE.start_main_~x~0))))) (store .cse0 c_ULTIMATE.start_main_~list~0.base (let ((.cse1 (select .cse0 c_ULTIMATE.start_main_~list~0.base))) (store .cse1 c_ULTIMATE.start_main_~list~0.offset (bvadd (select .cse1 c_ULTIMATE.start_main_~list~0.offset) (_ bv1 32)))))) (select (store (select (let ((.cse5 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~tail~0.base) .cse4 v_ULTIMATE.start_main_~p~0.base_109)))) (store .cse5 v_ULTIMATE.start_main_~p~0.base_109 (store (store (select .cse5 v_ULTIMATE.start_main_~p~0.base_109) .cse3 (_ bv0 32)) v_ULTIMATE.start_main_~p~0.offset_109 v_DerPreprocessor_124))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_DerPreprocessor_120) .cse6)) (select (store (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~tail~0.base) .cse4 v_ULTIMATE.start_main_~p~0.offset_109)))) (store .cse7 v_ULTIMATE.start_main_~p~0.base_109 (store (store (select .cse7 v_ULTIMATE.start_main_~p~0.base_109) .cse3 (_ bv0 32)) v_ULTIMATE.start_main_~p~0.offset_109 v_DerPreprocessor_125))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_DerPreprocessor_121) .cse6))) (_ bv10 32)))) is different from false [2021-10-16 02:40:36,342 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:40:36,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 9061376 treesize of output 8954967 [2021-10-16 02:41:01,603 WARN L207 SmtUtils]: Spent 25.26 s on a formula simplification that was a NOOP. DAG size: 1092 [2021-10-16 02:41:26,902 WARN L207 SmtUtils]: Spent 25.24 s on a formula simplification that was a NOOP. DAG size: 1096 [2021-10-16 02:41:26,903 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:41:52,031 WARN L207 SmtUtils]: Spent 25.12 s on a formula simplification that was a NOOP. DAG size: 1060 [2021-10-16 02:42:16,976 WARN L207 SmtUtils]: Spent 24.94 s on a formula simplification that was a NOOP. DAG size: 1087 [2021-10-16 02:42:16,977 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10658812 [2021-10-16 02:42:42,172 WARN L207 SmtUtils]: Spent 25.14 s on a formula simplification that was a NOOP. DAG size: 1087 [2021-10-16 02:42:46,906 INFO L354 Elim1Store]: treesize reduction 366, result has 19.0 percent of original size [2021-10-16 02:42:46,907 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 1 new quantified variables, introduced 5 case distinctions, treesize of input 10658812 treesize of output 8004770 [2021-10-16 02:43:12,196 WARN L207 SmtUtils]: Spent 25.29 s on a formula simplification that was a NOOP. DAG size: 1110 [2021-10-16 02:43:37,616 WARN L207 SmtUtils]: Spent 25.42 s on a formula simplification that was a NOOP. DAG size: 1099 [2021-10-16 02:43:39,028 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2021-10-16 02:43:39,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 9883002 treesize of output 8878380 [2021-10-16 02:44:04,545 WARN L207 SmtUtils]: Spent 25.51 s on a formula simplification that was a NOOP. DAG size: 1119 [2021-10-16 02:44:29,941 WARN L207 SmtUtils]: Spent 25.39 s on a formula simplification that was a NOOP. DAG size: 1114 [2021-10-16 02:44:55,460 WARN L207 SmtUtils]: Spent 25.42 s on a formula simplification that was a NOOP. DAG size: 1118 [2021-10-16 02:44:55,461 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:45:20,953 WARN L207 SmtUtils]: Spent 25.49 s on a formula simplification that was a NOOP. DAG size: 1052 [2021-10-16 02:45:46,471 WARN L207 SmtUtils]: Spent 25.51 s on a formula simplification that was a NOOP. DAG size: 1109 [2021-10-16 02:45:46,472 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10582223 [2021-10-16 02:46:11,949 WARN L207 SmtUtils]: Spent 25.42 s on a formula simplification that was a NOOP. DAG size: 1109 [2021-10-16 02:46:13,606 INFO L354 Elim1Store]: treesize reduction 417, result has 16.6 percent of original size [2021-10-16 02:46:13,607 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 1 new quantified variables, introduced 5 case distinctions, treesize of input 10582223 treesize of output 7797110 [2021-10-16 02:46:39,966 WARN L207 SmtUtils]: Spent 26.36 s on a formula simplification that was a NOOP. DAG size: 1116 [2021-10-16 02:47:06,977 WARN L207 SmtUtils]: Spent 27.00 s on a formula simplification that was a NOOP. DAG size: 1105 [2021-10-16 02:47:07,349 INFO L354 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2021-10-16 02:47:07,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 9413208 treesize of output 8539650 [2021-10-16 02:47:34,282 WARN L207 SmtUtils]: Spent 26.93 s on a formula simplification that was a NOOP. DAG size: 1119 [2021-10-16 02:47:34,282 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-16 02:47:35,251 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:47:35,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088791180] [2021-10-16 02:47:35,251 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 02:47:35,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1971110625] [2021-10-16 02:47:35,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:47:35,252 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:47:35,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:47:35,260 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:47:35,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2021-10-16 02:47:36,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:47:36,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:47:36,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-16 02:47:36,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:47:36,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:47:36,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:47:36,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:47:36,479 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-16 02:47:36,479 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 40 treesize of output 23 [2021-10-16 02:47:36,533 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-16 02:47:36,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-10-16 02:47:36,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:47:36,566 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 40 treesize of output 19 [2021-10-16 02:47:36,586 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 0 case distinctions, treesize of input 20 treesize of output 16 [2021-10-16 02:47:36,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:47:37,552 INFO L354 Elim1Store]: treesize reduction 202, result has 11.0 percent of original size [2021-10-16 02:47:37,553 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 3 new quantified variables, introduced 4 case distinctions, treesize of input 368 treesize of output 238 [2021-10-16 02:47:37,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:47:37,740 INFO L354 Elim1Store]: treesize reduction 194, result has 10.6 percent of original size [2021-10-16 02:47:37,740 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 460 treesize of output 314 [2021-10-16 02:47:37,747 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:47:37,748 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 215 [2021-10-16 02:47:37,753 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:47:37,754 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-10-16 02:47:37,819 INFO L354 Elim1Store]: treesize reduction 108, result has 20.0 percent of original size [2021-10-16 02:47:37,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 222 treesize of output 188 [2021-10-16 02:47:37,858 INFO L354 Elim1Store]: treesize reduction 22, result has 61.4 percent of original size [2021-10-16 02:47:37,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 148 treesize of output 160 [2021-10-16 02:47:37,863 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-16 02:47:38,709 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-10-16 02:47:38,709 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 3 case distinctions, treesize of input 148 treesize of output 142 [2021-10-16 02:47:38,739 INFO L354 Elim1Store]: treesize reduction 43, result has 20.4 percent of original size [2021-10-16 02:47:38,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 133 treesize of output 120 [2021-10-16 02:47:38,747 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-16 02:47:38,748 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 76 [2021-10-16 02:47:38,856 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-10-16 02:47:38,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 69 [2021-10-16 02:47:38,865 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-16 02:47:38,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 41 [2021-10-16 02:47:39,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 26 [2021-10-16 02:47:39,042 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:47:39,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:47:39,255 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:47:39,256 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-16 02:47:39,273 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:47:39,274 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-10-16 02:47:40,065 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:47:40,068 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 203 [2021-10-16 02:47:40,071 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:47:40,072 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 243 [2021-10-16 02:47:40,074 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:47:40,075 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 266 [2021-10-16 02:47:40,078 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:47:40,079 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 289 [2021-10-16 02:47:45,329 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_132 (_ BitVec 32)) (v_DerPreprocessor_133 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_134 (_ BitVec 32)) (v_DerPreprocessor_135 (_ BitVec 32)) (v_DerPreprocessor_130 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_114 (_ BitVec 32)) (v_DerPreprocessor_131 (_ BitVec 32))) (let ((.cse5 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset)) (.cse7 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (let ((.cse0 (select (store (select (let ((.cse8 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~tail~0.base) .cse5 v_ULTIMATE.start_main_~p~0.base_114)))) (store .cse8 v_ULTIMATE.start_main_~p~0.base_114 (store (store (select .cse8 v_ULTIMATE.start_main_~p~0.base_114) (_ bv4 32) (_ bv0 32)) (_ bv0 32) v_DerPreprocessor_134))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_DerPreprocessor_130) .cse7)) (.cse1 (select (store (select (let ((.cse6 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~tail~0.base) .cse5 (_ bv0 32))))) (store .cse6 v_ULTIMATE.start_main_~p~0.base_114 (store (store (select .cse6 v_ULTIMATE.start_main_~p~0.base_114) (_ bv4 32) (_ bv0 32)) (_ bv0 32) v_DerPreprocessor_135))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_DerPreprocessor_131) .cse7))) (or (and (= .cse0 (_ bv0 32)) (= .cse1 (_ bv0 32))) (bvsge (select (select (let ((.cse2 (let ((.cse4 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) .cse5 v_DerPreprocessor_133)))) (store .cse4 v_ULTIMATE.start_main_~p~0.base_114 (store (store (select .cse4 v_ULTIMATE.start_main_~p~0.base_114) (_ bv4 32) v_DerPreprocessor_132) (_ bv0 32) ULTIMATE.start_main_~x~0))))) (store .cse2 c_ULTIMATE.start_main_~list~0.base (let ((.cse3 (select .cse2 c_ULTIMATE.start_main_~list~0.base))) (store .cse3 c_ULTIMATE.start_main_~list~0.offset (bvadd (_ bv1 32) (select .cse3 c_ULTIMATE.start_main_~list~0.offset)))))) .cse0) .cse1) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_114)))))))) is different from false [2021-10-16 02:47:52,666 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:47:52,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 351122 treesize of output 346725 [2021-10-16 02:47:54,510 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:47:56,293 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 453182 [2021-10-16 02:47:59,323 INFO L354 Elim1Store]: treesize reduction 243, result has 25.7 percent of original size [2021-10-16 02:47:59,324 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 1 new quantified variables, introduced 5 case distinctions, treesize of input 453182 treesize of output 291473 [2021-10-16 02:48:02,374 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2021-10-16 02:48:02,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 362217 treesize of output 322777 [2021-10-16 02:48:05,218 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:48:07,014 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 429232 [2021-10-16 02:48:08,345 INFO L354 Elim1Store]: treesize reduction 289, result has 19.9 percent of original size [2021-10-16 02:48:08,346 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 1 new quantified variables, introduced 5 case distinctions, treesize of input 429232 treesize of output 259319 [2021-10-16 02:48:10,536 INFO L354 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2021-10-16 02:48:10,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 259301 treesize of output 255241 [2021-10-16 02:48:11,422 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-16 02:48:11,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 02:48:11,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454232328] [2021-10-16 02:48:11,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:48:11,688 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:48:11,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:48:11,690 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:48:11,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-16 02:48:12,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:48:12,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:48:12,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-16 02:48:12,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:48:12,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:48:12,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-10-16 02:48:12,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:48:12,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:48:12,625 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-16 02:48:12,626 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 40 treesize of output 23 [2021-10-16 02:48:12,681 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-16 02:48:12,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-10-16 02:48:12,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:48:12,713 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 40 treesize of output 19 [2021-10-16 02:48:12,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:48:13,958 INFO L354 Elim1Store]: treesize reduction 209, result has 11.1 percent of original size [2021-10-16 02:48:13,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 293 treesize of output 179 [2021-10-16 02:48:13,965 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:48:13,967 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 285 [2021-10-16 02:48:13,971 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:48:13,972 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 292 [2021-10-16 02:48:14,156 INFO L354 Elim1Store]: treesize reduction 332, result has 12.2 percent of original size [2021-10-16 02:48:14,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 292 treesize of output 258 [2021-10-16 02:48:14,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:48:14,287 INFO L354 Elim1Store]: treesize reduction 429, result has 8.9 percent of original size [2021-10-16 02:48:14,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 216 treesize of output 151 [2021-10-16 02:48:14,329 INFO L354 Elim1Store]: treesize reduction 22, result has 61.4 percent of original size [2021-10-16 02:48:14,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 152 treesize of output 164 [2021-10-16 02:48:14,331 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-16 02:48:15,170 INFO L354 Elim1Store]: treesize reduction 112, result has 14.5 percent of original size [2021-10-16 02:48:15,171 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 6 new quantified variables, introduced 5 case distinctions, treesize of input 201 treesize of output 162 [2021-10-16 02:48:15,241 INFO L354 Elim1Store]: treesize reduction 61, result has 10.3 percent of original size [2021-10-16 02:48:15,242 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 6 new quantified variables, introduced 4 case distinctions, treesize of input 142 treesize of output 101 [2021-10-16 02:48:15,278 INFO L354 Elim1Store]: treesize reduction 43, result has 20.4 percent of original size [2021-10-16 02:48:15,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 127 treesize of output 114 [2021-10-16 02:48:15,425 INFO L354 Elim1Store]: treesize reduction 45, result has 8.2 percent of original size [2021-10-16 02:48:15,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 168 treesize of output 97 [2021-10-16 02:48:15,434 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-10-16 02:48:15,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 48 [2021-10-16 02:48:15,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-10-16 02:48:15,520 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:48:15,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:48:15,564 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:48:15,565 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-16 02:48:15,568 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:48:15,569 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-16 02:48:15,771 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:48:15,772 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-10-16 02:48:15,775 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:48:15,776 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 228 [2021-10-16 02:48:15,779 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:48:15,780 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 220 [2021-10-16 02:48:15,783 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:48:15,784 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-10-16 02:48:18,363 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_143 (_ BitVec 32)) (v_DerPreprocessor_121 (_ BitVec 32)) (v_DerPreprocessor_144 (_ BitVec 32)) (ULTIMATE.start_main_~x~0 (_ BitVec 32)) (v_DerPreprocessor_145 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.base_119 (_ BitVec 32)) (v_ULTIMATE.start_main_~p~0.offset_119 (_ BitVec 32)) (v_DerPreprocessor_142 (_ BitVec 32)) (v_DerPreprocessor_120 (_ BitVec 32))) (or (bvsge (let ((.cse3 (bvadd (_ bv4 32) v_ULTIMATE.start_main_~p~0.offset_119)) (.cse4 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~tail~0.offset)) (.cse6 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~list~0.offset))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~tail~0.base) .cse4 v_DerPreprocessor_143)))) (store .cse2 v_ULTIMATE.start_main_~p~0.base_119 (store (store (select .cse2 v_ULTIMATE.start_main_~p~0.base_119) .cse3 v_DerPreprocessor_142) v_ULTIMATE.start_main_~p~0.offset_119 ULTIMATE.start_main_~x~0))))) (store .cse0 c_ULTIMATE.start_main_~list~0.base (let ((.cse1 (select .cse0 c_ULTIMATE.start_main_~list~0.base))) (store .cse1 c_ULTIMATE.start_main_~list~0.offset (bvadd (select .cse1 c_ULTIMATE.start_main_~list~0.offset) (_ bv1 32)))))) (select (store (select (let ((.cse5 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~tail~0.base) .cse4 v_ULTIMATE.start_main_~p~0.base_119)))) (store .cse5 v_ULTIMATE.start_main_~p~0.base_119 (store (store (select .cse5 v_ULTIMATE.start_main_~p~0.base_119) .cse3 (_ bv0 32)) v_ULTIMATE.start_main_~p~0.offset_119 v_DerPreprocessor_144))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_DerPreprocessor_120) .cse6)) (select (store (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~tail~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~tail~0.base) .cse4 v_ULTIMATE.start_main_~p~0.offset_119)))) (store .cse7 v_ULTIMATE.start_main_~p~0.base_119 (store (store (select .cse7 v_ULTIMATE.start_main_~p~0.base_119) .cse3 (_ bv0 32)) v_ULTIMATE.start_main_~p~0.offset_119 v_DerPreprocessor_145))) c_ULTIMATE.start_main_~list~0.base) c_ULTIMATE.start_main_~list~0.offset v_DerPreprocessor_121) .cse6))) (_ bv10 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~p~0.base_119)))))) is different from false [2021-10-16 02:48:20,080 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:48:20,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70764 treesize of output 70019 [2021-10-16 02:48:20,557 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:48:20,997 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83240 [2021-10-16 02:48:29,482 WARN L207 SmtUtils]: Spent 8.24 s on a formula simplification. DAG size of input: 95 DAG size of output: 48 [2021-10-16 02:48:29,483 INFO L354 Elim1Store]: treesize reduction 366, result has 19.0 percent of original size [2021-10-16 02:48:29,483 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 1 new quantified variables, introduced 5 case distinctions, treesize of input 83240 treesize of output 62670 [2021-10-16 02:48:31,380 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2021-10-16 02:48:31,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 77598 treesize of output 69652 [2021-10-16 02:48:32,064 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:48:32,496 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82871 [2021-10-16 02:48:36,580 INFO L354 Elim1Store]: treesize reduction 417, result has 16.6 percent of original size [2021-10-16 02:48:36,581 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 1 new quantified variables, introduced 5 case distinctions, treesize of input 82871 treesize of output 61278 [2021-10-16 02:48:37,320 INFO L354 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2021-10-16 02:48:37,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74168 treesize of output 67238 [2021-10-16 02:48:37,563 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-16 02:48:37,665 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 02:48:37,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:48:37,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-16 02:48:37,665 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-16 02:48:37,665 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-16 02:48:37,670 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:48:37,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-16 02:48:37,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2021-10-16 02:48:38,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-16 02:48:38,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:48:38,277 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:48:38,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:48:38 BoogieIcfgContainer [2021-10-16 02:48:38,291 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:48:38,292 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:48:38,292 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:48:38,292 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:48:38,293 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:37:04" (3/4) ... [2021-10-16 02:48:38,296 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:48:38,297 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:48:38,297 INFO L168 Benchmark]: Toolchain (without parser) took 695473.24 ms. Allocated memory was 58.7 MB in the beginning and 505.4 MB in the end (delta: 446.7 MB). Free memory was 35.7 MB in the beginning and 305.0 MB in the end (delta: -269.3 MB). Peak memory consumption was 176.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:48:38,298 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 58.7 MB. Free memory was 40.2 MB in the beginning and 40.1 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:48:38,298 INFO L168 Benchmark]: CACSL2BoogieTranslator took 609.12 ms. Allocated memory is still 58.7 MB. Free memory was 35.5 MB in the beginning and 34.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:48:38,298 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.36 ms. Allocated memory is still 58.7 MB. Free memory was 34.5 MB in the beginning and 32.6 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:48:38,298 INFO L168 Benchmark]: Boogie Preprocessor took 35.97 ms. Allocated memory is still 58.7 MB. Free memory was 32.6 MB in the beginning and 31.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:48:38,299 INFO L168 Benchmark]: RCFGBuilder took 549.00 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 30.8 MB in the beginning and 54.3 MB in the end (delta: -23.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:48:38,299 INFO L168 Benchmark]: TraceAbstraction took 694221.29 ms. Allocated memory was 79.7 MB in the beginning and 505.4 MB in the end (delta: 425.7 MB). Free memory was 54.0 MB in the beginning and 305.0 MB in the end (delta: -251.0 MB). Peak memory consumption was 315.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:48:38,299 INFO L168 Benchmark]: Witness Printer took 4.58 ms. Allocated memory is still 505.4 MB. Free memory is still 305.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:48:38,300 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 58.7 MB. Free memory was 40.2 MB in the beginning and 40.1 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 609.12 ms. Allocated memory is still 58.7 MB. Free memory was 35.5 MB in the beginning and 34.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.36 ms. Allocated memory is still 58.7 MB. Free memory was 34.5 MB in the beginning and 32.6 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.97 ms. Allocated memory is still 58.7 MB. Free memory was 32.6 MB in the beginning and 31.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 549.00 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 30.8 MB in the beginning and 54.3 MB in the end (delta: -23.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 694221.29 ms. Allocated memory was 79.7 MB in the beginning and 505.4 MB in the end (delta: 425.7 MB). Free memory was 54.0 MB in the beginning and 305.0 MB in the end (delta: -251.0 MB). Peak memory consumption was 315.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.58 ms. Allocated memory is still 505.4 MB. Free memory is still 305.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 589]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L573] Node *p, *list = malloc(sizeof(*list)); [L573] Node *p, *list = malloc(sizeof(*list)); [L574] Node *tail = list; [L575] list->next = ((void *)0) [L576] list->val = 10 [L577] COND TRUE __VERIFIER_nondet_int() [L578] int x = __VERIFIER_nondet_int(); [L579] COND FALSE !(x < 10 || x > 20) [L580] p = malloc(sizeof(*p)) [L581] tail->next = p [L582] p->next = ((void *)0) [L583] p->val = x [L584] tail = p [L577] COND TRUE __VERIFIER_nondet_int() [L578] int x = __VERIFIER_nondet_int(); [L579] COND FALSE !(x < 10 || x > 20) [L580] p = malloc(sizeof(*p)) [L581] tail->next = p [L582] p->next = ((void *)0) [L583] p->val = x [L584] tail = p [L577] COND FALSE !(__VERIFIER_nondet_int()) [L586] COND TRUE 1 [L587] p = list [L587] COND TRUE p!= ((void *)0) [L588] EXPR p->val [L588] EXPR p->val <= 20 && p->val >= 10 [L588] EXPR p->val [L588] EXPR p->val <= 20 && p->val >= 10 [L588] COND FALSE !(!(p->val <= 20 && p->val >= 10)) [L590] EXPR p->val [L590] COND TRUE p->val < 20 [L590] EXPR p->val [L590] p->val++ [L587] EXPR p->next [L587] p = p->next [L587] COND TRUE p!= ((void *)0) [L588] EXPR p->val [L588] EXPR p->val <= 20 && p->val >= 10 [L588] EXPR p->val [L588] EXPR p->val <= 20 && p->val >= 10 [L588] COND TRUE !(p->val <= 20 && p->val >= 10) [L589] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 694153.1ms, OverallIterations: 12, TraceHistogramMax: 4, EmptinessCheckTime: 20.1ms, AutomataDifference: 49098.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 212 SDtfs, 654 SDslu, 1120 SDs, 0 SdLazy, 1658 SolverSat, 365 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12545.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 831 GetRequests, 596 SyntacticMatches, 14 SemanticMatches, 221 ConstructedPredicates, 33 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 93778.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred in iteration=10, InterpolantAutomatonStates: 160, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 137.8ms AutomataMinimizationTime, 11 MinimizatonAttempts, 451 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 216.3ms SsaConstructionTime, 2099.2ms SatisfiabilityAnalysisTime, 139685.5ms InterpolantComputationTime, 386 NumberOfCodeBlocks, 386 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 724 ConstructedInterpolants, 161 QuantifiedInterpolants, 18692 SizeOfPredicates, 301 NumberOfNonLiveVariables, 1736 ConjunctsInSsa, 402 ConjunctsInUnsatCore, 48 InterpolantComputations, 6 PerfectInterpolantSequences, 70/368 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-16 02:48:38,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ffadb54-2243-4ea3-b3fd-0726aed423b0/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...