./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/matrix-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/matrix-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 484b00968af178bafd1c632864ac68eeb543ca8851deb47f0795724cfa80a660 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 20:08:06,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:08:06,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:08:06,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:08:06,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:08:06,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:08:06,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:08:06,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:08:06,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:08:06,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:08:06,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:08:06,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:08:06,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:08:06,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:08:06,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:08:06,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:08:06,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:08:06,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:08:06,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:08:06,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:08:06,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:08:06,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:08:06,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:08:06,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:08:06,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:08:06,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:08:06,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:08:06,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:08:06,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:08:06,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:08:06,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:08:06,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:08:06,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:08:06,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:08:06,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:08:06,544 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:08:06,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:08:06,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:08:06,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:08:06,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:08:06,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:08:06,546 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 20:08:06,560 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:08:06,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:08:06,561 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:08:06,561 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:08:06,561 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:08:06,561 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:08:06,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:08:06,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:08:06,562 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:08:06,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:08:06,562 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:08:06,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:08:06,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:08:06,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:08:06,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:08:06,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:08:06,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:08:06,563 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:08:06,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:08:06,563 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:08:06,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:08:06,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:08:06,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:08:06,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:08:06,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:08:06,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:08:06,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:08:06,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:08:06,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:08:06,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:08:06,564 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:08:06,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:08:06,564 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:08:06,565 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:08:06,565 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:08:06,565 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 484b00968af178bafd1c632864ac68eeb543ca8851deb47f0795724cfa80a660 [2022-12-13 20:08:06,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:08:06,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:08:06,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:08:06,760 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:08:06,760 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:08:06,761 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/loops/matrix-1.c [2022-12-13 20:08:09,358 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:08:09,521 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:08:09,521 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/sv-benchmarks/c/loops/matrix-1.c [2022-12-13 20:08:09,525 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8/data/2f998493b/4fdec5bd4dd144aabd58d37a17c923ff/FLAG31ae80132 [2022-12-13 20:08:09,536 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8/data/2f998493b/4fdec5bd4dd144aabd58d37a17c923ff [2022-12-13 20:08:09,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:08:09,539 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:08:09,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:08:09,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:08:09,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:08:09,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:08:09" (1/1) ... [2022-12-13 20:08:09,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d6ffc34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:08:09, skipping insertion in model container [2022-12-13 20:08:09,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:08:09" (1/1) ... [2022-12-13 20:08:09,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:08:09,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:08:09,661 WARN L237 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_81d7a1be-0e12-405a-9427-e20409b9db10/sv-benchmarks/c/loops/matrix-1.c[320,333] [2022-12-13 20:08:09,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:08:09,682 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:08:09,692 WARN L237 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_81d7a1be-0e12-405a-9427-e20409b9db10/sv-benchmarks/c/loops/matrix-1.c[320,333] [2022-12-13 20:08:09,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:08:09,709 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:08:09,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:08:09 WrapperNode [2022-12-13 20:08:09,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:08:09,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:08:09,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:08:09,710 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:08:09,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:08:09" (1/1) ... [2022-12-13 20:08:09,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:08:09" (1/1) ... [2022-12-13 20:08:09,733 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2022-12-13 20:08:09,733 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:08:09,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:08:09,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:08:09,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:08:09,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:08:09" (1/1) ... [2022-12-13 20:08:09,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:08:09" (1/1) ... [2022-12-13 20:08:09,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:08:09" (1/1) ... [2022-12-13 20:08:09,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:08:09" (1/1) ... [2022-12-13 20:08:09,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:08:09" (1/1) ... [2022-12-13 20:08:09,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:08:09" (1/1) ... [2022-12-13 20:08:09,753 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:08:09" (1/1) ... [2022-12-13 20:08:09,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:08:09" (1/1) ... [2022-12-13 20:08:09,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:08:09,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:08:09,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:08:09,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:08:09,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:08:09" (1/1) ... [2022-12-13 20:08:09,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:08:09,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:08:09,786 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:08:09,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:08:09,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:08:09,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:08:09,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:08:09,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:08:09,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:08:09,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:08:09,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 20:08:09,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:08:09,870 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:08:09,872 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:08:09,966 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:08:09,970 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:08:09,970 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 20:08:09,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:08:09 BoogieIcfgContainer [2022-12-13 20:08:09,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:08:09,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:08:09,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:08:09,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:08:09,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:08:09" (1/3) ... [2022-12-13 20:08:09,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef882b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:08:09, skipping insertion in model container [2022-12-13 20:08:09,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:08:09" (2/3) ... [2022-12-13 20:08:09,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef882b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:08:09, skipping insertion in model container [2022-12-13 20:08:09,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:08:09" (3/3) ... [2022-12-13 20:08:09,978 INFO L112 eAbstractionObserver]: Analyzing ICFG matrix-1.c [2022-12-13 20:08:09,995 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:08:09,996 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 20:08:10,041 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:08:10,047 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3bc12993, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:08:10,047 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 20:08:10,050 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:08:10,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-13 20:08:10,054 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:08:10,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 20:08:10,055 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:08:10,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:08:10,058 INFO L85 PathProgramCache]: Analyzing trace with hash 889621918, now seen corresponding path program 1 times [2022-12-13 20:08:10,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:08:10,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989936652] [2022-12-13 20:08:10,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:08:10,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:08:10,126 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:08:10,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1729631899] [2022-12-13 20:08:10,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:08:10,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:08:10,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:08:10,128 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:08:10,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:08:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:08:10,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 20:08:10,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:08:10,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:08:10,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:08:10,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:08:10,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989936652] [2022-12-13 20:08:10,239 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:08:10,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729631899] [2022-12-13 20:08:10,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729631899] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:08:10,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:08:10,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:08:10,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264040970] [2022-12-13 20:08:10,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:08:10,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:08:10,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:08:10,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:08:10,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:08:10,267 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:08:10,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:08:10,312 INFO L93 Difference]: Finished difference Result 33 states and 48 transitions. [2022-12-13 20:08:10,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:08:10,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-13 20:08:10,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:08:10,322 INFO L225 Difference]: With dead ends: 33 [2022-12-13 20:08:10,322 INFO L226 Difference]: Without dead ends: 16 [2022-12-13 20:08:10,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:08:10,335 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:08:10,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:08:10,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-13 20:08:10,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2022-12-13 20:08:10,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:08:10,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-12-13 20:08:10,357 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2022-12-13 20:08:10,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:08:10,358 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-12-13 20:08:10,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:08:10,358 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2022-12-13 20:08:10,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-13 20:08:10,358 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:08:10,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:08:10,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:08:10,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-13 20:08:10,561 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:08:10,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:08:10,563 INFO L85 PathProgramCache]: Analyzing trace with hash -235638193, now seen corresponding path program 1 times [2022-12-13 20:08:10,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:08:10,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359367456] [2022-12-13 20:08:10,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:08:10,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:08:10,600 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:08:10,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2076714251] [2022-12-13 20:08:10,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:08:10,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:08:10,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:08:10,605 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:08:10,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 20:08:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:08:10,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 20:08:10,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:08:10,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:08:10,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:08:10,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:08:10,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359367456] [2022-12-13 20:08:10,774 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:08:10,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076714251] [2022-12-13 20:08:10,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076714251] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:08:10,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:08:10,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:08:10,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444471404] [2022-12-13 20:08:10,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:08:10,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:08:10,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:08:10,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:08:10,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:08:10,777 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:08:10,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:08:10,821 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2022-12-13 20:08:10,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:08:10,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 [2022-12-13 20:08:10,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:08:10,823 INFO L225 Difference]: With dead ends: 28 [2022-12-13 20:08:10,823 INFO L226 Difference]: Without dead ends: 19 [2022-12-13 20:08:10,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:08:10,824 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:08:10,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 19 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:08:10,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-12-13 20:08:10,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2022-12-13 20:08:10,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:08:10,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-12-13 20:08:10,829 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2022-12-13 20:08:10,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:08:10,830 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-12-13 20:08:10,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:08:10,830 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-12-13 20:08:10,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 20:08:10,831 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:08:10,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:08:10,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 20:08:11,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:08:11,033 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:08:11,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:08:11,035 INFO L85 PathProgramCache]: Analyzing trace with hash -589728809, now seen corresponding path program 1 times [2022-12-13 20:08:11,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:08:11,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924798851] [2022-12-13 20:08:11,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:08:11,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:08:11,080 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:08:11,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [524854099] [2022-12-13 20:08:11,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:08:11,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:08:11,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:08:11,083 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:08:11,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d7a1be-0e12-405a-9427-e20409b9db10/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 20:08:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:08:11,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 20:08:11,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:08:11,261 INFO L350 Elim1Store]: Elim1 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 139 treesize of output 130 [2022-12-13 20:08:11,268 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 20:08:11,273 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 20:08:11,280 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 20:08:11,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 20:08:11,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 20:08:11,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:08:11,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:08:11,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 128 [2022-12-13 20:08:11,648 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:08:11,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 128 treesize of output 573 [2022-12-13 20:08:13,808 INFO L321 Elim1Store]: treesize reduction 884, result has 27.6 percent of original size [2022-12-13 20:08:13,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 22 case distinctions, treesize of input 1625 treesize of output 2336 [2022-12-13 20:08:14,410 INFO L217 Elim1Store]: Index analysis took 477 ms [2022-12-13 20:08:29,538 WARN L233 SmtUtils]: Spent 14.96s on a formula simplification. DAG size of input: 329 DAG size of output: 121 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-13 20:08:29,540 INFO L321 Elim1Store]: treesize reduction 2686, result has 16.0 percent of original size [2022-12-13 20:08:29,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 9 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 9 new quantified variables, introduced 54 case distinctions, treesize of input 1694 treesize of output 9257 [2022-12-13 20:09:05,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:06,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:06,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:06,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:07,298 INFO L217 Elim1Store]: Index analysis took 2196 ms [2022-12-13 20:09:10,496 INFO L321 Elim1Store]: treesize reduction 712, result has 1.4 percent of original size [2022-12-13 20:09:10,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 7 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 28 case distinctions, treesize of input 1610 treesize of output 8948 [2022-12-13 20:09:12,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:12,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:13,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:13,671 INFO L217 Elim1Store]: Index analysis took 1327 ms [2022-12-13 20:09:15,468 INFO L321 Elim1Store]: treesize reduction 669, result has 1.5 percent of original size [2022-12-13 20:09:15,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 6 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 26 case distinctions, treesize of input 4639 treesize of output 9701 [2022-12-13 20:09:27,051 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:09:27,055 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:09:27,246 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:09:27,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:28,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:29,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:31,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:33,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:35,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:35,457 INFO L217 Elim1Store]: Index analysis took 8549 ms [2022-12-13 20:09:41,501 INFO L321 Elim1Store]: treesize reduction 1218, result has 0.5 percent of original size [2022-12-13 20:09:41,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 6 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 17 case distinctions, treesize of input 1464 treesize of output 6929 [2022-12-13 20:09:43,337 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:09:43,427 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:09:43,545 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:09:46,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:47,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:47,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:48,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:48,359 INFO L217 Elim1Store]: Index analysis took 5026 ms [2022-12-13 20:09:48,570 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:09:50,302 INFO L321 Elim1Store]: treesize reduction 1313, result has 2.0 percent of original size [2022-12-13 20:09:50,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 6 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 16 case distinctions, treesize of input 1464 treesize of output 6950 [2022-12-13 20:09:52,532 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:09:52,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:53,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:53,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:54,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:54,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:54,252 INFO L217 Elim1Store]: Index analysis took 2155 ms [2022-12-13 20:09:57,004 INFO L321 Elim1Store]: treesize reduction 1835, result has 0.3 percent of original size [2022-12-13 20:09:57,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 6 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 21 case distinctions, treesize of input 1464 treesize of output 6929 [2022-12-13 20:09:59,082 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:09:59,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:09:59,088 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:09:59,090 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:09:59,091 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:09:59,091 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:09:59,094 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:09:59,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:59,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:59,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:59,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:59,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:59,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:09:59,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:10:00,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:10:00,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:10:00,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:10:00,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:10:00,113 INFO L217 Elim1Store]: Index analysis took 1033 ms [2022-12-13 20:10:00,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:10:00,282 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:10:00,431 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:10:00,549 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:10:00,639 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:10:00,740 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-12-13 20:10:00,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 6 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 1464 treesize of output 6923 [2022-12-13 20:10:01,823 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:10:01,824 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:10:01,826 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:10:01,826 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:10:01,852 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:10:01,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:10:01,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:10:02,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:10:02,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:10:02,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:10:02,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:10:02,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:10:02,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:10:02,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:10:02,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:10:02,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:10:02,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:10:02,364 INFO L217 Elim1Store]: Index analysis took 541 ms [2022-12-13 20:10:03,100 INFO L321 Elim1Store]: treesize reduction 310, result has 1.9 percent of original size [2022-12-13 20:10:03,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 6 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 1464 treesize of output 6929 [2022-12-13 20:22:45,912 WARN L233 SmtUtils]: Spent 11.69m on a formula simplification. DAG size of input: 977 DAG size of output: 452 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-13 20:22:45,914 INFO L321 Elim1Store]: treesize reduction 8966, result has 25.8 percent of original size [2022-12-13 20:22:45,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 24 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 27 new quantified variables, introduced 176 case distinctions, treesize of input 35434208 treesize of output 35526368