./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro --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 64bit --witnessprinter.graph.data.programhash 03b59b42cc833f5b28fc5dc7cc6711355c533ad94229ba44874c6d4d186d9dcb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:35:50,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:35:50,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:35:50,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:35:50,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:35:50,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:35:50,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:35:50,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:35:50,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:35:50,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:35:50,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:35:50,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:35:50,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:35:50,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:35:50,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:35:50,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:35:50,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:35:50,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:35:50,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:35:50,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:35:50,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:35:50,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:35:50,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:35:50,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:35:50,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:35:50,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:35:50,867 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:35:50,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:35:50,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:35:50,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:35:50,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:35:50,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:35:50,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:35:50,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:35:50,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:35:50,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:35:50,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:35:50,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:35:50,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:35:50,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:35:50,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:35:50,887 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 19:35:50,931 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:35:50,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:35:50,931 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:35:50,932 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:35:50,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:35:50,932 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:35:50,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:35:50,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:35:50,933 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:35:50,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:35:50,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:35:50,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:35:50,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:35:50,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:35:50,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:35:50,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:35:50,935 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:35:50,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:35:50,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:35:50,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:35:50,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:35:50,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:35:50,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:35:50,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:35:50,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:35:50,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:35:50,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:35:50,937 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:35:50,937 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:35:50,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:35:50,937 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03b59b42cc833f5b28fc5dc7cc6711355c533ad94229ba44874c6d4d186d9dcb [2022-11-18 19:35:51,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:35:51,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:35:51,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:35:51,194 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:35:51,203 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:35:51,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-11-18 19:35:51,274 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/data/a19c7da8b/6d60a6cd207b4a3ebebcfe71e98a33d0/FLAGe8af79665 [2022-11-18 19:35:52,226 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:35:52,226 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-11-18 19:35:52,259 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/data/a19c7da8b/6d60a6cd207b4a3ebebcfe71e98a33d0/FLAGe8af79665 [2022-11-18 19:35:52,694 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/data/a19c7da8b/6d60a6cd207b4a3ebebcfe71e98a33d0 [2022-11-18 19:35:52,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:35:52,698 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:35:52,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:35:52,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:35:52,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:35:52,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:35:52" (1/1) ... [2022-11-18 19:35:52,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1defb50f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:52, skipping insertion in model container [2022-11-18 19:35:52,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:35:52" (1/1) ... [2022-11-18 19:35:52,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:35:52,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:35:54,393 WARN L234 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_1673cc29-8191-4eb2-a9c0-4cc1700fc298/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2022-11-18 19:35:54,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:35:54,467 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:35:54,846 WARN L234 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_1673cc29-8191-4eb2-a9c0-4cc1700fc298/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2022-11-18 19:35:54,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:35:54,957 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:35:54,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:54 WrapperNode [2022-11-18 19:35:54,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:35:54,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:35:54,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:35:54,963 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:35:54,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:54" (1/1) ... [2022-11-18 19:35:55,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:54" (1/1) ... [2022-11-18 19:35:55,227 INFO L138 Inliner]: procedures = 157, calls = 812, calls flagged for inlining = 80, calls inlined = 79, statements flattened = 2775 [2022-11-18 19:35:55,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:35:55,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:35:55,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:35:55,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:35:55,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:54" (1/1) ... [2022-11-18 19:35:55,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:54" (1/1) ... [2022-11-18 19:35:55,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:54" (1/1) ... [2022-11-18 19:35:55,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:54" (1/1) ... [2022-11-18 19:35:55,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:54" (1/1) ... [2022-11-18 19:35:55,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:54" (1/1) ... [2022-11-18 19:35:55,440 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:54" (1/1) ... [2022-11-18 19:35:55,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:54" (1/1) ... [2022-11-18 19:35:55,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:35:55,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:35:55,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:35:55,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:35:55,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:54" (1/1) ... [2022-11-18 19:35:55,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:35:55,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:55,509 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:55,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:35:55,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-18 19:35:55,550 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-18 19:35:55,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-18 19:35:55,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-18 19:35:55,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:35:55,550 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-18 19:35:55,550 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-18 19:35:55,550 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-18 19:35:55,551 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-18 19:35:55,551 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-11-18 19:35:55,551 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-11-18 19:35:55,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-18 19:35:55,551 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-18 19:35:55,551 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-18 19:35:55,551 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-18 19:35:55,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-18 19:35:55,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-18 19:35:55,552 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-18 19:35:55,552 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-18 19:35:55,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive_int [2022-11-18 19:35:55,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive_int [2022-11-18 19:35:55,552 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-18 19:35:55,552 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-18 19:35:55,552 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-18 19:35:55,552 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-18 19:35:55,553 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2022-11-18 19:35:55,553 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2022-11-18 19:35:55,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:35:55,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-18 19:35:55,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-18 19:35:55,553 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-11-18 19:35:55,553 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-11-18 19:35:55,553 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-18 19:35:55,553 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-18 19:35:55,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-18 19:35:55,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-18 19:35:55,554 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-18 19:35:55,554 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-18 19:35:55,554 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-18 19:35:55,554 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-18 19:35:55,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:35:55,554 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2022-11-18 19:35:55,554 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2022-11-18 19:35:55,554 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2022-11-18 19:35:55,555 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2022-11-18 19:35:55,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:35:55,555 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-18 19:35:55,555 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-18 19:35:55,555 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2022-11-18 19:35:55,555 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2022-11-18 19:35:55,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:35:55,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:35:55,555 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-18 19:35:55,555 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-18 19:35:55,556 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-18 19:35:55,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:35:55,556 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-18 19:35:55,556 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-18 19:35:55,556 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-18 19:35:55,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-18 19:35:55,556 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-18 19:35:55,557 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-18 19:35:55,557 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2022-11-18 19:35:55,557 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2022-11-18 19:35:55,557 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2022-11-18 19:35:55,557 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2022-11-18 19:35:55,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:35:55,557 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-18 19:35:55,557 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-18 19:35:55,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 19:35:55,558 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-18 19:35:55,558 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-18 19:35:55,558 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2022-11-18 19:35:55,558 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2022-11-18 19:35:55,558 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-18 19:35:55,558 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-18 19:35:55,558 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-18 19:35:55,558 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-18 19:35:55,558 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-18 19:35:55,559 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-18 19:35:55,559 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-18 19:35:55,559 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-18 19:35:55,559 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-18 19:35:55,559 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-18 19:35:55,559 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-18 19:35:55,559 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-18 19:35:55,559 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-18 19:35:55,560 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-18 19:35:55,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:35:55,560 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-18 19:35:55,560 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-18 19:35:55,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-18 19:35:55,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-18 19:35:55,560 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-18 19:35:55,560 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-18 19:35:55,560 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-18 19:35:55,561 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-18 19:35:55,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-18 19:35:55,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:35:55,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:35:55,561 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2022-11-18 19:35:55,561 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2022-11-18 19:35:55,561 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-18 19:35:55,562 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-18 19:35:56,176 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:35:56,182 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:35:59,163 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:35:59,179 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:35:59,179 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 19:35:59,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:35:59 BoogieIcfgContainer [2022-11-18 19:35:59,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:35:59,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:35:59,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:35:59,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:35:59,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:35:52" (1/3) ... [2022-11-18 19:35:59,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737e1f72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:35:59, skipping insertion in model container [2022-11-18 19:35:59,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:54" (2/3) ... [2022-11-18 19:35:59,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737e1f72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:35:59, skipping insertion in model container [2022-11-18 19:35:59,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:35:59" (3/3) ... [2022-11-18 19:35:59,194 INFO L112 eAbstractionObserver]: Analyzing ICFG m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-11-18 19:35:59,215 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:35:59,216 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:35:59,324 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:35:59,331 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;@6fc8914d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:35:59,331 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:35:59,342 INFO L276 IsEmpty]: Start isEmpty. Operand has 963 states, 711 states have (on average 1.4303797468354431) internal successors, (1017), 738 states have internal predecessors, (1017), 207 states have call successors, (207), 43 states have call predecessors, (207), 43 states have return successors, (207), 205 states have call predecessors, (207), 207 states have call successors, (207) [2022-11-18 19:35:59,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-18 19:35:59,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:59,382 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:59,382 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:59,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:59,392 INFO L85 PathProgramCache]: Analyzing trace with hash 2076921458, now seen corresponding path program 1 times [2022-11-18 19:35:59,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:59,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819889162] [2022-11-18 19:35:59,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:59,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:00,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:36:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:00,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:00,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:36:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:00,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:36:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:00,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:00,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 19:36:00,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:00,127 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:36:00,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:00,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819889162] [2022-11-18 19:36:00,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819889162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:00,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:00,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:36:00,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691486891] [2022-11-18 19:36:00,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:00,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:36:00,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:00,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:36:00,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:36:00,187 INFO L87 Difference]: Start difference. First operand has 963 states, 711 states have (on average 1.4303797468354431) internal successors, (1017), 738 states have internal predecessors, (1017), 207 states have call successors, (207), 43 states have call predecessors, (207), 43 states have return successors, (207), 205 states have call predecessors, (207), 207 states have call successors, (207) Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 19:36:02,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:02,280 INFO L93 Difference]: Finished difference Result 1940 states and 2903 transitions. [2022-11-18 19:36:02,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:36:02,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 59 [2022-11-18 19:36:02,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:02,318 INFO L225 Difference]: With dead ends: 1940 [2022-11-18 19:36:02,318 INFO L226 Difference]: Without dead ends: 942 [2022-11-18 19:36:02,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:36:02,340 INFO L413 NwaCegarLoop]: 979 mSDtfsCounter, 1575 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:02,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 1582 Invalid, 1028 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [365 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-18 19:36:02,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2022-11-18 19:36:02,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 924. [2022-11-18 19:36:02,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 681 states have (on average 1.4199706314243759) internal successors, (967), 705 states have internal predecessors, (967), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-11-18 19:36:02,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1365 transitions. [2022-11-18 19:36:02,497 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1365 transitions. Word has length 59 [2022-11-18 19:36:02,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:02,498 INFO L495 AbstractCegarLoop]: Abstraction has 924 states and 1365 transitions. [2022-11-18 19:36:02,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 19:36:02,498 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1365 transitions. [2022-11-18 19:36:02,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-18 19:36:02,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:02,507 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:02,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:36:02,507 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:02,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:02,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1794399116, now seen corresponding path program 1 times [2022-11-18 19:36:02,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:02,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136016072] [2022-11-18 19:36:02,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:02,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:02,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:36:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:02,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:02,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:36:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:02,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:36:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:02,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:02,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 19:36:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:02,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:36:02,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:02,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136016072] [2022-11-18 19:36:02,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136016072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:02,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:02,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:36:02,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834513817] [2022-11-18 19:36:02,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:02,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:36:02,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:02,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:36:02,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:36:02,800 INFO L87 Difference]: Start difference. First operand 924 states and 1365 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:36:05,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:05,188 INFO L93 Difference]: Finished difference Result 1849 states and 2738 transitions. [2022-11-18 19:36:05,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:36:05,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-11-18 19:36:05,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:05,200 INFO L225 Difference]: With dead ends: 1849 [2022-11-18 19:36:05,200 INFO L226 Difference]: Without dead ends: 942 [2022-11-18 19:36:05,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:36:05,206 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 420 mSDsluCounter, 2205 mSDsCounter, 0 mSdLazyCounter, 1757 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 3148 SdHoareTripleChecker+Invalid, 1906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:05,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 3148 Invalid, 1906 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [149 Valid, 1757 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-18 19:36:05,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2022-11-18 19:36:05,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 924. [2022-11-18 19:36:05,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 681 states have (on average 1.4185022026431717) internal successors, (966), 705 states have internal predecessors, (966), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-11-18 19:36:05,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1364 transitions. [2022-11-18 19:36:05,283 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1364 transitions. Word has length 59 [2022-11-18 19:36:05,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:05,284 INFO L495 AbstractCegarLoop]: Abstraction has 924 states and 1364 transitions. [2022-11-18 19:36:05,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:36:05,284 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1364 transitions. [2022-11-18 19:36:05,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-18 19:36:05,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:05,287 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:05,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:36:05,287 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:05,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:05,288 INFO L85 PathProgramCache]: Analyzing trace with hash 313703985, now seen corresponding path program 1 times [2022-11-18 19:36:05,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:05,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430349589] [2022-11-18 19:36:05,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:05,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:05,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:36:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:05,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:05,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:36:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:05,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:36:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:05,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:05,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 19:36:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:05,635 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:36:05,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:05,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430349589] [2022-11-18 19:36:05,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430349589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:05,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:05,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:36:05,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3148932] [2022-11-18 19:36:05,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:05,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:36:05,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:05,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:36:05,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:36:05,654 INFO L87 Difference]: Start difference. First operand 924 states and 1364 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 19:36:08,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:08,582 INFO L93 Difference]: Finished difference Result 1453 states and 2220 transitions. [2022-11-18 19:36:08,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:36:08,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 62 [2022-11-18 19:36:08,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:08,595 INFO L225 Difference]: With dead ends: 1453 [2022-11-18 19:36:08,595 INFO L226 Difference]: Without dead ends: 1451 [2022-11-18 19:36:08,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:36:08,606 INFO L413 NwaCegarLoop]: 1737 mSDtfsCounter, 1334 mSDsluCounter, 3137 mSDsCounter, 0 mSdLazyCounter, 1929 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1418 SdHoareTripleChecker+Valid, 4874 SdHoareTripleChecker+Invalid, 2303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 1929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:08,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1418 Valid, 4874 Invalid, 2303 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 1929 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-18 19:36:08,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2022-11-18 19:36:08,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 926. [2022-11-18 19:36:08,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 683 states have (on average 1.417276720351391) internal successors, (968), 707 states have internal predecessors, (968), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-11-18 19:36:08,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1366 transitions. [2022-11-18 19:36:08,711 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1366 transitions. Word has length 62 [2022-11-18 19:36:08,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:08,712 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1366 transitions. [2022-11-18 19:36:08,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 19:36:08,712 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1366 transitions. [2022-11-18 19:36:08,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-18 19:36:08,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:08,715 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:08,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:36:08,716 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:08,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:08,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1325751679, now seen corresponding path program 1 times [2022-11-18 19:36:08,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:08,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973945264] [2022-11-18 19:36:08,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:08,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:08,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:36:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:08,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:08,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:36:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:08,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:36:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:08,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:08,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 19:36:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:08,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 19:36:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:08,976 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:36:08,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:08,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973945264] [2022-11-18 19:36:08,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973945264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:08,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:08,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:36:08,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730007779] [2022-11-18 19:36:08,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:08,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:36:08,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:08,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:36:08,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:36:08,979 INFO L87 Difference]: Start difference. First operand 926 states and 1366 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:36:11,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:11,805 INFO L93 Difference]: Finished difference Result 2362 states and 3564 transitions. [2022-11-18 19:36:11,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:36:11,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2022-11-18 19:36:11,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:11,815 INFO L225 Difference]: With dead ends: 2362 [2022-11-18 19:36:11,815 INFO L226 Difference]: Without dead ends: 1455 [2022-11-18 19:36:11,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:36:11,819 INFO L413 NwaCegarLoop]: 1417 mSDtfsCounter, 2188 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2459 SdHoareTripleChecker+Valid, 2983 SdHoareTripleChecker+Invalid, 2335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 543 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:11,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2459 Valid, 2983 Invalid, 2335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [543 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-18 19:36:11,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2022-11-18 19:36:11,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 927. [2022-11-18 19:36:11,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 927 states, 684 states have (on average 1.4166666666666667) internal successors, (969), 708 states have internal predecessors, (969), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-11-18 19:36:11,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1367 transitions. [2022-11-18 19:36:11,897 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1367 transitions. Word has length 72 [2022-11-18 19:36:11,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:11,898 INFO L495 AbstractCegarLoop]: Abstraction has 927 states and 1367 transitions. [2022-11-18 19:36:11,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:36:11,898 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1367 transitions. [2022-11-18 19:36:11,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 19:36:11,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:11,903 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:11,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:36:11,904 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:11,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:11,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1244918688, now seen corresponding path program 1 times [2022-11-18 19:36:11,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:11,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48296099] [2022-11-18 19:36:11,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:11,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:12,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:36:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:12,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:12,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:36:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:12,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:36:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:12,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:12,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 19:36:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:12,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:36:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:12,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:36:12,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:12,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48296099] [2022-11-18 19:36:12,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48296099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:12,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:12,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:36:12,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415983524] [2022-11-18 19:36:12,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:12,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:36:12,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:12,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:36:12,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:36:12,266 INFO L87 Difference]: Start difference. First operand 927 states and 1367 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:36:16,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:16,591 INFO L93 Difference]: Finished difference Result 2228 states and 3463 transitions. [2022-11-18 19:36:16,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:36:16,592 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2022-11-18 19:36:16,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:16,607 INFO L225 Difference]: With dead ends: 2228 [2022-11-18 19:36:16,608 INFO L226 Difference]: Without dead ends: 2226 [2022-11-18 19:36:16,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:36:16,610 INFO L413 NwaCegarLoop]: 2231 mSDtfsCounter, 2576 mSDsluCounter, 5546 mSDsCounter, 0 mSdLazyCounter, 3043 mSolverCounterSat, 760 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2775 SdHoareTripleChecker+Valid, 7777 SdHoareTripleChecker+Invalid, 3803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 760 IncrementalHoareTripleChecker+Valid, 3043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:16,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2775 Valid, 7777 Invalid, 3803 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [760 Valid, 3043 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-18 19:36:16,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2022-11-18 19:36:16,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 929. [2022-11-18 19:36:16,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 685 states have (on average 1.416058394160584) internal successors, (970), 708 states have internal predecessors, (970), 200 states have call successors, (200), 43 states have call predecessors, (200), 43 states have return successors, (200), 198 states have call predecessors, (200), 200 states have call successors, (200) [2022-11-18 19:36:16,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1370 transitions. [2022-11-18 19:36:16,739 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1370 transitions. Word has length 74 [2022-11-18 19:36:16,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:16,740 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1370 transitions. [2022-11-18 19:36:16,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:36:16,740 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1370 transitions. [2022-11-18 19:36:16,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-18 19:36:16,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:16,746 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:16,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:36:16,747 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:16,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:16,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1953898069, now seen corresponding path program 1 times [2022-11-18 19:36:16,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:16,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217942986] [2022-11-18 19:36:16,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:16,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:16,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:36:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:16,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:16,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:36:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:16,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:36:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:16,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:16,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 19:36:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:16,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:36:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:16,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 19:36:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:16,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 19:36:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:17,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:36:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:17,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 19:36:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:17,027 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 19:36:17,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:17,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217942986] [2022-11-18 19:36:17,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217942986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:17,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:17,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:36:17,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741747389] [2022-11-18 19:36:17,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:17,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:36:17,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:17,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:36:17,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:36:17,032 INFO L87 Difference]: Start difference. First operand 929 states and 1370 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-18 19:36:19,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:19,166 INFO L93 Difference]: Finished difference Result 1886 states and 2774 transitions. [2022-11-18 19:36:19,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:36:19,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 104 [2022-11-18 19:36:19,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:19,172 INFO L225 Difference]: With dead ends: 1886 [2022-11-18 19:36:19,173 INFO L226 Difference]: Without dead ends: 976 [2022-11-18 19:36:19,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:36:19,180 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 1476 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:19,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1602 Valid, 1526 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 19:36:19,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2022-11-18 19:36:19,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 949. [2022-11-18 19:36:19,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 699 states have (on average 1.407725321888412) internal successors, (984), 722 states have internal predecessors, (984), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-11-18 19:36:19,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1388 transitions. [2022-11-18 19:36:19,313 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1388 transitions. Word has length 104 [2022-11-18 19:36:19,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:19,314 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1388 transitions. [2022-11-18 19:36:19,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-18 19:36:19,314 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1388 transitions. [2022-11-18 19:36:19,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-18 19:36:19,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:19,325 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:19,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:36:19,326 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:19,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:19,326 INFO L85 PathProgramCache]: Analyzing trace with hash 181958863, now seen corresponding path program 1 times [2022-11-18 19:36:19,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:19,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067720143] [2022-11-18 19:36:19,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:19,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:19,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:36:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:19,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:19,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:36:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:19,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:36:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:19,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:19,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 19:36:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:19,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:36:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:19,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 19:36:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:19,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-18 19:36:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:19,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 19:36:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:19,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-18 19:36:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:19,653 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 19:36:19,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:19,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067720143] [2022-11-18 19:36:19,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067720143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:19,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:19,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:36:19,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617885733] [2022-11-18 19:36:19,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:19,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:36:19,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:19,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:36:19,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:36:19,656 INFO L87 Difference]: Start difference. First operand 949 states and 1388 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-18 19:36:22,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:22,580 INFO L93 Difference]: Finished difference Result 2399 states and 3599 transitions. [2022-11-18 19:36:22,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:36:22,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 106 [2022-11-18 19:36:22,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:22,597 INFO L225 Difference]: With dead ends: 2399 [2022-11-18 19:36:22,597 INFO L226 Difference]: Without dead ends: 1489 [2022-11-18 19:36:22,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:36:22,603 INFO L413 NwaCegarLoop]: 1468 mSDtfsCounter, 2011 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 1818 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2281 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 2213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 1818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:22,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2281 Valid, 3069 Invalid, 2213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 1818 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-18 19:36:22,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2022-11-18 19:36:22,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 953. [2022-11-18 19:36:22,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 703 states have (on average 1.406827880512091) internal successors, (989), 726 states have internal predecessors, (989), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-11-18 19:36:22,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1393 transitions. [2022-11-18 19:36:22,735 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1393 transitions. Word has length 106 [2022-11-18 19:36:22,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:22,736 INFO L495 AbstractCegarLoop]: Abstraction has 953 states and 1393 transitions. [2022-11-18 19:36:22,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-18 19:36:22,737 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1393 transitions. [2022-11-18 19:36:22,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-18 19:36:22,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:22,742 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:22,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:36:22,743 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:22,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:22,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1351006426, now seen corresponding path program 1 times [2022-11-18 19:36:22,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:22,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418154714] [2022-11-18 19:36:22,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:22,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:22,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:36:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:22,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:22,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:36:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:22,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:36:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:22,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:22,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 19:36:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:22,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:36:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:22,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 19:36:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:22,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 19:36:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:22,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 19:36:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:22,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 19:36:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:22,946 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 19:36:22,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:22,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418154714] [2022-11-18 19:36:22,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418154714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:22,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:22,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:36:22,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615369431] [2022-11-18 19:36:22,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:22,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:36:22,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:22,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:36:22,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:36:22,949 INFO L87 Difference]: Start difference. First operand 953 states and 1393 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:36:24,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:24,698 INFO L93 Difference]: Finished difference Result 1895 states and 2791 transitions. [2022-11-18 19:36:24,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:36:24,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2022-11-18 19:36:24,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:24,705 INFO L225 Difference]: With dead ends: 1895 [2022-11-18 19:36:24,705 INFO L226 Difference]: Without dead ends: 981 [2022-11-18 19:36:24,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:36:24,709 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 416 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 2305 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:24,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 2305 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 19:36:24,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-11-18 19:36:24,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 953. [2022-11-18 19:36:24,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 703 states have (on average 1.402560455192034) internal successors, (986), 726 states have internal predecessors, (986), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-11-18 19:36:24,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1390 transitions. [2022-11-18 19:36:24,833 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1390 transitions. Word has length 109 [2022-11-18 19:36:24,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:24,834 INFO L495 AbstractCegarLoop]: Abstraction has 953 states and 1390 transitions. [2022-11-18 19:36:24,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:36:24,834 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1390 transitions. [2022-11-18 19:36:24,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-18 19:36:24,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:24,839 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:24,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:36:24,840 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:24,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:24,840 INFO L85 PathProgramCache]: Analyzing trace with hash -465046881, now seen corresponding path program 1 times [2022-11-18 19:36:24,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:24,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299418597] [2022-11-18 19:36:24,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:24,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:25,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:36:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:25,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:25,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:36:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:25,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:36:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:25,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:25,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 19:36:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:25,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:36:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:25,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 19:36:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:25,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 19:36:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:25,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-18 19:36:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:25,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 19:36:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:25,143 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 19:36:25,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:25,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299418597] [2022-11-18 19:36:25,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299418597] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:36:25,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271230186] [2022-11-18 19:36:25,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:25,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:25,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:25,151 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:25,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:36:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:25,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:36:25,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:25,990 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:36:25,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:26,197 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 19:36:26,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271230186] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:36:26,198 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:36:26,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 11 [2022-11-18 19:36:26,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738449208] [2022-11-18 19:36:26,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:26,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:36:26,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:26,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:36:26,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:36:26,201 INFO L87 Difference]: Start difference. First operand 953 states and 1390 transitions. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 10 states have internal predecessors, (163), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-11-18 19:36:32,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:32,425 INFO L93 Difference]: Finished difference Result 3919 states and 6042 transitions. [2022-11-18 19:36:32,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:36:32,428 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 10 states have internal predecessors, (163), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 112 [2022-11-18 19:36:32,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:32,446 INFO L225 Difference]: With dead ends: 3919 [2022-11-18 19:36:32,447 INFO L226 Difference]: Without dead ends: 3005 [2022-11-18 19:36:32,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:36:32,452 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 6147 mSDsluCounter, 4049 mSDsCounter, 0 mSdLazyCounter, 4087 mSolverCounterSat, 1944 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6557 SdHoareTripleChecker+Valid, 5567 SdHoareTripleChecker+Invalid, 6031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1944 IncrementalHoareTripleChecker+Valid, 4087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:32,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6557 Valid, 5567 Invalid, 6031 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1944 Valid, 4087 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-18 19:36:32,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2022-11-18 19:36:32,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 960. [2022-11-18 19:36:32,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 710 states have (on average 1.4014084507042253) internal successors, (995), 733 states have internal predecessors, (995), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-11-18 19:36:32,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1399 transitions. [2022-11-18 19:36:32,697 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1399 transitions. Word has length 112 [2022-11-18 19:36:32,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:32,697 INFO L495 AbstractCegarLoop]: Abstraction has 960 states and 1399 transitions. [2022-11-18 19:36:32,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 10 states have internal predecessors, (163), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-11-18 19:36:32,698 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1399 transitions. [2022-11-18 19:36:32,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-18 19:36:32,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:32,702 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:32,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:32,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:32,911 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:32,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:32,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1877320742, now seen corresponding path program 1 times [2022-11-18 19:36:32,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:32,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256441771] [2022-11-18 19:36:32,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:32,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:33,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:36:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:33,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:33,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:36:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:33,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:36:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:33,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:33,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 19:36:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:33,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:36:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:34,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 19:36:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:34,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 19:36:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:34,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 19:36:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:34,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-18 19:36:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:34,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-18 19:36:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:34,032 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 19:36:34,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:34,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256441771] [2022-11-18 19:36:34,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256441771] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:36:34,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494746703] [2022-11-18 19:36:34,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:34,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:34,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:34,034 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:34,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:36:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:34,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 19:36:34,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:34,628 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 19:36:34,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:34,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494746703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:34,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:36:34,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-11-18 19:36:34,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755253535] [2022-11-18 19:36:34,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:34,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:36:34,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:34,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:36:34,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:36:34,631 INFO L87 Difference]: Start difference. First operand 960 states and 1399 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:36:35,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:35,340 INFO L93 Difference]: Finished difference Result 2653 states and 3987 transitions. [2022-11-18 19:36:35,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:36:35,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 121 [2022-11-18 19:36:35,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:35,349 INFO L225 Difference]: With dead ends: 2653 [2022-11-18 19:36:35,349 INFO L226 Difference]: Without dead ends: 1732 [2022-11-18 19:36:35,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:36:35,353 INFO L413 NwaCegarLoop]: 2095 mSDtfsCounter, 1176 mSDsluCounter, 3429 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1286 SdHoareTripleChecker+Valid, 5524 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:35,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1286 Valid, 5524 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:36:35,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2022-11-18 19:36:35,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 962. [2022-11-18 19:36:35,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 712 states have (on average 1.4002808988764044) internal successors, (997), 735 states have internal predecessors, (997), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-11-18 19:36:35,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1401 transitions. [2022-11-18 19:36:35,512 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1401 transitions. Word has length 121 [2022-11-18 19:36:35,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:35,512 INFO L495 AbstractCegarLoop]: Abstraction has 962 states and 1401 transitions. [2022-11-18 19:36:35,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:36:35,513 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1401 transitions. [2022-11-18 19:36:35,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-18 19:36:35,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:35,518 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:35,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:35,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:35,726 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:35,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:35,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1860512275, now seen corresponding path program 1 times [2022-11-18 19:36:35,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:35,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844828838] [2022-11-18 19:36:35,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:35,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:35,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:36:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:35,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:35,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:36:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:35,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:36:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:35,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:35,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 19:36:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:35,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:36:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:35,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 19:36:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:35,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 19:36:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:35,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 19:36:35,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:35,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 19:36:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:35,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 19:36:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:35,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-18 19:36:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:35,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 19:36:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:35,950 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:36:35,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:35,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844828838] [2022-11-18 19:36:35,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844828838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:35,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:35,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:36:35,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881628960] [2022-11-18 19:36:35,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:35,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:36:35,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:35,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:36:35,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:36:35,953 INFO L87 Difference]: Start difference. First operand 962 states and 1401 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-18 19:36:38,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:38,646 INFO L93 Difference]: Finished difference Result 2311 states and 3439 transitions. [2022-11-18 19:36:38,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:36:38,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2022-11-18 19:36:38,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:38,657 INFO L225 Difference]: With dead ends: 2311 [2022-11-18 19:36:38,657 INFO L226 Difference]: Without dead ends: 1388 [2022-11-18 19:36:38,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:36:38,662 INFO L413 NwaCegarLoop]: 1561 mSDtfsCounter, 830 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 3436 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:38,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 3436 Invalid, 1465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-18 19:36:38,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2022-11-18 19:36:38,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 964. [2022-11-18 19:36:38,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 714 states have (on average 1.3991596638655461) internal successors, (999), 737 states have internal predecessors, (999), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-11-18 19:36:38,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1403 transitions. [2022-11-18 19:36:38,870 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1403 transitions. Word has length 130 [2022-11-18 19:36:38,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:38,871 INFO L495 AbstractCegarLoop]: Abstraction has 964 states and 1403 transitions. [2022-11-18 19:36:38,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-18 19:36:38,872 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1403 transitions. [2022-11-18 19:36:38,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-18 19:36:38,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:38,881 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:38,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:36:38,882 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:38,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:38,885 INFO L85 PathProgramCache]: Analyzing trace with hash 459180913, now seen corresponding path program 1 times [2022-11-18 19:36:38,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:38,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112845072] [2022-11-18 19:36:38,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:38,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:39,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:36:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:39,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:39,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:36:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:39,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:36:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:40,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:40,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 19:36:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:40,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:36:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:40,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 19:36:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:40,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:36:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:40,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 19:36:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:40,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-18 19:36:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:40,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-18 19:36:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:40,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 19:36:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:40,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-18 19:36:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:40,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-18 19:36:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:40,215 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 19:36:40,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:40,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112845072] [2022-11-18 19:36:40,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112845072] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:36:40,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129405021] [2022-11-18 19:36:40,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:40,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:40,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:40,217 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:40,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:36:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:40,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 1226 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-18 19:36:40,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:40,984 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 19:36:40,984 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:40,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129405021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:40,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:36:40,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 10 [2022-11-18 19:36:40,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163476486] [2022-11-18 19:36:40,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:40,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:36:40,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:40,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:36:40,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:36:40,987 INFO L87 Difference]: Start difference. First operand 964 states and 1403 transitions. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 19:36:41,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:41,449 INFO L93 Difference]: Finished difference Result 1910 states and 2795 transitions. [2022-11-18 19:36:41,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:36:41,449 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2022-11-18 19:36:41,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:41,454 INFO L225 Difference]: With dead ends: 1910 [2022-11-18 19:36:41,454 INFO L226 Difference]: Without dead ends: 972 [2022-11-18 19:36:41,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 167 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:36:41,458 INFO L413 NwaCegarLoop]: 1361 mSDtfsCounter, 42 mSDsluCounter, 9478 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 10839 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:41,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 10839 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:36:41,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2022-11-18 19:36:41,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 966. [2022-11-18 19:36:41,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 715 states have (on average 1.3986013986013985) internal successors, (1000), 739 states have internal predecessors, (1000), 202 states have call successors, (202), 47 states have call predecessors, (202), 48 states have return successors, (203), 200 states have call predecessors, (203), 202 states have call successors, (203) [2022-11-18 19:36:41,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1405 transitions. [2022-11-18 19:36:41,626 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1405 transitions. Word has length 138 [2022-11-18 19:36:41,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:41,626 INFO L495 AbstractCegarLoop]: Abstraction has 966 states and 1405 transitions. [2022-11-18 19:36:41,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 19:36:41,627 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1405 transitions. [2022-11-18 19:36:41,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-18 19:36:41,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:41,633 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:41,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:41,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 19:36:41,841 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:41,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:41,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1639772825, now seen corresponding path program 1 times [2022-11-18 19:36:41,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:41,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254207090] [2022-11-18 19:36:41,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:41,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:42,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:36:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:42,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:42,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:36:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:42,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:36:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:42,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:42,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 19:36:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:42,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 19:36:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:42,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-18 19:36:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:42,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-18 19:36:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:42,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 19:36:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:42,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 19:36:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:42,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:36:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:42,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-18 19:36:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:42,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-18 19:36:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:42,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-18 19:36:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:42,517 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 19:36:42,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:42,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254207090] [2022-11-18 19:36:42,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254207090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:42,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:42,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:36:42,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833945753] [2022-11-18 19:36:42,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:42,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:36:42,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:42,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:36:42,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:36:42,524 INFO L87 Difference]: Start difference. First operand 966 states and 1405 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 19:36:47,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:47,030 INFO L93 Difference]: Finished difference Result 2844 states and 4286 transitions. [2022-11-18 19:36:47,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:36:47,031 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2022-11-18 19:36:47,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:47,045 INFO L225 Difference]: With dead ends: 2844 [2022-11-18 19:36:47,045 INFO L226 Difference]: Without dead ends: 1919 [2022-11-18 19:36:47,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:36:47,050 INFO L413 NwaCegarLoop]: 1852 mSDtfsCounter, 1778 mSDsluCounter, 6527 mSDsCounter, 0 mSdLazyCounter, 3729 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1973 SdHoareTripleChecker+Valid, 8379 SdHoareTripleChecker+Invalid, 4108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 3729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:47,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1973 Valid, 8379 Invalid, 4108 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [379 Valid, 3729 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-18 19:36:47,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2022-11-18 19:36:47,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 971. [2022-11-18 19:36:47,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 719 states have (on average 1.3963838664812238) internal successors, (1004), 743 states have internal predecessors, (1004), 202 states have call successors, (202), 47 states have call predecessors, (202), 49 states have return successors, (207), 201 states have call predecessors, (207), 202 states have call successors, (207) [2022-11-18 19:36:47,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1413 transitions. [2022-11-18 19:36:47,287 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1413 transitions. Word has length 141 [2022-11-18 19:36:47,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:47,288 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1413 transitions. [2022-11-18 19:36:47,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 19:36:47,288 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1413 transitions. [2022-11-18 19:36:47,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-18 19:36:47,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:47,294 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:47,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:36:47,294 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:47,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:47,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1450271979, now seen corresponding path program 2 times [2022-11-18 19:36:47,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:47,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080700066] [2022-11-18 19:36:47,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:47,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:56,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:36:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:56,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:56,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:36:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:56,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:36:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:56,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:36:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:56,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 19:36:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:56,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 19:36:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:56,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-18 19:36:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:57,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-18 19:36:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:57,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-18 19:36:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:57,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 19:36:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:57,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-18 19:36:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:57,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 19:36:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:57,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-18 19:36:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:57,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-18 19:36:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:57,259 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:36:57,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:57,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080700066] [2022-11-18 19:36:57,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080700066] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:36:57,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650514623] [2022-11-18 19:36:57,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:36:57,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:57,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:57,261 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:57,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:37:45,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:37:45,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:37:45,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 1286 conjuncts, 185 conjunts are in the unsatisfiable core [2022-11-18 19:37:45,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:45,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:37:46,221 INFO L321 Elim1Store]: treesize reduction 133, result has 28.1 percent of original size [2022-11-18 19:37:46,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 60 [2022-11-18 19:37:46,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 19:37:46,759 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:37:46,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-18 19:37:47,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:37:47,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:37:47,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 19:37:47,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-18 19:37:47,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:37:47,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:37:47,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:37:48,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-18 19:37:48,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-18 19:37:48,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-11-18 19:37:49,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2022-11-18 19:37:49,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2022-11-18 19:37:49,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2022-11-18 19:37:49,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:37:49,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 19:37:49,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:37:49,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-18 19:37:49,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:49,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:37:49,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-18 19:37:49,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:49,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:37:49,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-18 19:37:49,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:49,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-11-18 19:37:50,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:37:50,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2022-11-18 19:37:50,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:37:50,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:37:50,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:37:50,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2022-11-18 19:37:52,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:52,094 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 132 treesize of output 102 [2022-11-18 19:37:52,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:52,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 71 [2022-11-18 19:37:52,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:52,116 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 60 treesize of output 30 [2022-11-18 19:37:52,200 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:37:52,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:37:52,339 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1255 (Array Int Int)) (v_ArrVal_1254 (Array Int Int)) (v_ArrVal_1253 (Array Int Int))) (let ((.cse0 (mod (let ((.cse1 (+ |c_ULTIMATE.start_slip_open_~sl~12#1.offset| 12))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_1254) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_1253) |c_ULTIMATE.start_slip_open_~sl~12#1.base|) .cse1)) (+ 112 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_1255) |c_ULTIMATE.start_slip_open_~sl~12#1.base|) .cse1)))) 4294967296))) (or (not (<= .cse0 2147483647)) (< .cse0 1)))) is different from false [2022-11-18 19:37:52,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650514623] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:37:52,360 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:37:52,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 33] total 59 [2022-11-18 19:37:52,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039637302] [2022-11-18 19:37:52,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:37:52,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-18 19:37:52,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:37:52,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-18 19:37:52,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=3359, Unknown=1, NotChecked=116, Total=3660 [2022-11-18 19:37:52,364 INFO L87 Difference]: Start difference. First operand 971 states and 1413 transitions. Second operand has 59 states, 57 states have (on average 3.6140350877192984) internal successors, (206), 49 states have internal predecessors, (206), 17 states have call successors, (30), 7 states have call predecessors, (30), 11 states have return successors, (29), 21 states have call predecessors, (29), 17 states have call successors, (29) [2022-11-18 19:38:11,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:38:12,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:38:16,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:38:37,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:38:39,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:38:41,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:38:43,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:38:47,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:38:58,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:00,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:02,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:10,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:13,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:15,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:17,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:19,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:21,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:24,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:25,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:28,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:31,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:33,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:35,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:39,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:41,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:43,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:45,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:47,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:40:00,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:40:12,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:40:14,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:41:10,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:10,305 INFO L93 Difference]: Finished difference Result 7896 states and 12406 transitions. [2022-11-18 19:41:10,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-11-18 19:41:10,306 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 57 states have (on average 3.6140350877192984) internal successors, (206), 49 states have internal predecessors, (206), 17 states have call successors, (30), 7 states have call predecessors, (30), 11 states have return successors, (29), 21 states have call predecessors, (29), 17 states have call successors, (29) Word has length 144 [2022-11-18 19:41:10,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:10,346 INFO L225 Difference]: With dead ends: 7896 [2022-11-18 19:41:10,347 INFO L226 Difference]: Without dead ends: 7894 [2022-11-18 19:41:10,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 142 SyntacticMatches, 12 SemanticMatches, 115 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3774 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=923, Invalid=12420, Unknown=1, NotChecked=228, Total=13572 [2022-11-18 19:41:10,353 INFO L413 NwaCegarLoop]: 4464 mSDtfsCounter, 16175 mSDsluCounter, 101562 mSDsCounter, 0 mSdLazyCounter, 106139 mSolverCounterSat, 7940 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 176.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16543 SdHoareTripleChecker+Valid, 106026 SdHoareTripleChecker+Invalid, 122560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.9s SdHoareTripleChecker+Time, 7940 IncrementalHoareTripleChecker+Valid, 106139 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 8461 IncrementalHoareTripleChecker+Unchecked, 188.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:10,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16543 Valid, 106026 Invalid, 122560 Unknown, 0 Unchecked, 0.9s Time], IncrementalHoareTripleChecker [7940 Valid, 106139 Invalid, 20 Unknown, 8461 Unchecked, 188.0s Time] [2022-11-18 19:41:10,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7894 states. [2022-11-18 19:41:10,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7894 to 1829. [2022-11-18 19:41:10,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1348 states have (on average 1.3939169139465875) internal successors, (1879), 1399 states have internal predecessors, (1879), 387 states have call successors, (387), 90 states have call predecessors, (387), 93 states have return successors, (397), 377 states have call predecessors, (397), 387 states have call successors, (397) [2022-11-18 19:41:10,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2663 transitions. [2022-11-18 19:41:10,931 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2663 transitions. Word has length 144 [2022-11-18 19:41:10,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:10,932 INFO L495 AbstractCegarLoop]: Abstraction has 1829 states and 2663 transitions. [2022-11-18 19:41:10,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 57 states have (on average 3.6140350877192984) internal successors, (206), 49 states have internal predecessors, (206), 17 states have call successors, (30), 7 states have call predecessors, (30), 11 states have return successors, (29), 21 states have call predecessors, (29), 17 states have call successors, (29) [2022-11-18 19:41:10,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2663 transitions. [2022-11-18 19:41:10,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-18 19:41:10,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:10,940 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:10,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-18 19:41:11,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 19:41:11,158 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:11,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:11,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1711362792, now seen corresponding path program 1 times [2022-11-18 19:41:11,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:11,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845801023] [2022-11-18 19:41:11,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:11,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:11,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:41:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:11,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:41:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:11,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:41:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:11,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:41:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:11,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:41:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:11,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:41:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:11,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 19:41:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:11,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 19:41:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:11,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 19:41:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:11,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 19:41:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:11,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-18 19:41:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:11,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:41:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:11,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-18 19:41:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:11,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-18 19:41:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:11,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-18 19:41:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:11,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-18 19:41:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:11,637 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 19:41:11,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:11,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845801023] [2022-11-18 19:41:11,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845801023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:11,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:11,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:41:11,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376575237] [2022-11-18 19:41:11,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:11,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:41:11,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:11,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:41:11,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:41:11,640 INFO L87 Difference]: Start difference. First operand 1829 states and 2663 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-18 19:41:14,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:14,657 INFO L93 Difference]: Finished difference Result 2794 states and 4082 transitions. [2022-11-18 19:41:14,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:41:14,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 148 [2022-11-18 19:41:14,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:14,667 INFO L225 Difference]: With dead ends: 2794 [2022-11-18 19:41:14,667 INFO L226 Difference]: Without dead ends: 1860 [2022-11-18 19:41:14,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:41:14,670 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 419 mSDsluCounter, 3608 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 4544 SdHoareTripleChecker+Invalid, 2617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:14,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 4544 Invalid, 2617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-18 19:41:14,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2022-11-18 19:41:15,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1825. [2022-11-18 19:41:15,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1825 states, 1345 states have (on average 1.3940520446096654) internal successors, (1875), 1396 states have internal predecessors, (1875), 386 states have call successors, (386), 90 states have call predecessors, (386), 93 states have return successors, (396), 376 states have call predecessors, (396), 386 states have call successors, (396) [2022-11-18 19:41:15,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 2657 transitions. [2022-11-18 19:41:15,037 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 2657 transitions. Word has length 148 [2022-11-18 19:41:15,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:15,038 INFO L495 AbstractCegarLoop]: Abstraction has 1825 states and 2657 transitions. [2022-11-18 19:41:15,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-18 19:41:15,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 2657 transitions. [2022-11-18 19:41:15,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-18 19:41:15,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:15,046 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:15,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:41:15,046 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:15,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:15,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1414580562, now seen corresponding path program 1 times [2022-11-18 19:41:15,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:15,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519905359] [2022-11-18 19:41:15,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:15,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:16,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:41:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:16,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:41:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:16,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:41:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:16,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:41:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:17,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:41:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:17,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 19:41:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:17,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 19:41:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:17,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 19:41:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:17,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 19:41:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:17,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 19:41:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:17,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-18 19:41:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:17,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 19:41:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:17,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-18 19:41:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:17,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 19:41:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:17,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-18 19:41:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:17,182 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 19:41:17,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:17,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519905359] [2022-11-18 19:41:17,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519905359] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:17,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081217060] [2022-11-18 19:41:17,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:17,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:17,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:17,185 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:17,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:41:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:20,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-18 19:41:20,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:20,630 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 35 treesize of output 23 [2022-11-18 19:41:20,633 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 27 treesize of output 15 [2022-11-18 19:41:20,678 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:41:20,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:41:20,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081217060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:20,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:41:20,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 17 [2022-11-18 19:41:20,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501831196] [2022-11-18 19:41:20,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:20,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:41:20,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:20,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:41:20,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:41:20,681 INFO L87 Difference]: Start difference. First operand 1825 states and 2657 transitions. Second operand has 15 states, 15 states have (on average 7.6) internal successors, (114), 13 states have internal predecessors, (114), 4 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-18 19:41:27,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:41:28,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:41:32,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:41:48,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:48,970 INFO L93 Difference]: Finished difference Result 9396 states and 14455 transitions. [2022-11-18 19:41:48,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 19:41:48,971 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.6) internal successors, (114), 13 states have internal predecessors, (114), 4 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 147 [2022-11-18 19:41:48,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:49,001 INFO L225 Difference]: With dead ends: 9396 [2022-11-18 19:41:49,001 INFO L226 Difference]: Without dead ends: 7611 [2022-11-18 19:41:49,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 174 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=282, Invalid=1698, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 19:41:49,009 INFO L413 NwaCegarLoop]: 2448 mSDtfsCounter, 8051 mSDsluCounter, 24697 mSDsCounter, 0 mSdLazyCounter, 15399 mSolverCounterSat, 3717 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8056 SdHoareTripleChecker+Valid, 27145 SdHoareTripleChecker+Invalid, 19118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3717 IncrementalHoareTripleChecker+Valid, 15399 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:49,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8056 Valid, 27145 Invalid, 19118 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3717 Valid, 15399 Invalid, 2 Unknown, 0 Unchecked, 24.0s Time] [2022-11-18 19:41:49,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7611 states. [2022-11-18 19:41:49,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7611 to 3041. [2022-11-18 19:41:49,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3041 states, 2248 states have (on average 1.4070284697508897) internal successors, (3163), 2330 states have internal predecessors, (3163), 626 states have call successors, (626), 161 states have call predecessors, (626), 166 states have return successors, (660), 598 states have call predecessors, (660), 626 states have call successors, (660) [2022-11-18 19:41:49,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3041 states to 3041 states and 4449 transitions. [2022-11-18 19:41:49,909 INFO L78 Accepts]: Start accepts. Automaton has 3041 states and 4449 transitions. Word has length 147 [2022-11-18 19:41:49,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:49,909 INFO L495 AbstractCegarLoop]: Abstraction has 3041 states and 4449 transitions. [2022-11-18 19:41:49,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.6) internal successors, (114), 13 states have internal predecessors, (114), 4 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-18 19:41:49,909 INFO L276 IsEmpty]: Start isEmpty. Operand 3041 states and 4449 transitions. [2022-11-18 19:41:49,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-18 19:41:49,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:49,920 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:49,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:50,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 19:41:50,132 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:50,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:50,133 INFO L85 PathProgramCache]: Analyzing trace with hash -48504037, now seen corresponding path program 1 times [2022-11-18 19:41:50,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:50,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813580978] [2022-11-18 19:41:50,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:50,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:58,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:41:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:58,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:41:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:58,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:41:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:58,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:41:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:58,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:41:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:58,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 19:41:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:58,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 19:41:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:58,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-18 19:41:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:58,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-18 19:41:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:58,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-18 19:41:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:58,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 19:41:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:58,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-18 19:41:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:58,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 19:41:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:58,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-18 19:41:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:58,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-18 19:41:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:58,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-18 19:41:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:58,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-18 19:41:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:58,845 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 19:41:58,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:58,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813580978] [2022-11-18 19:41:58,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813580978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:58,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:58,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-11-18 19:41:58,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120447722] [2022-11-18 19:41:58,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:58,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 19:41:58,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:58,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 19:41:58,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=905, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:41:58,859 INFO L87 Difference]: Start difference. First operand 3041 states and 4449 transitions. Second operand has 32 states, 31 states have (on average 3.5161290322580645) internal successors, (109), 27 states have internal predecessors, (109), 12 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (17), 14 states have call predecessors, (17), 12 states have call successors, (17) [2022-11-18 19:42:09,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:42:17,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:42:20,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:42:22,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:42:26,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:42:29,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:42:35,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:42:37,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:42:40,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:42:41,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:42:45,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:42:48,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:42:50,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:42:56,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:42:58,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:43:00,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:43:02,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:43:04,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:43:06,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:43:08,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:43:11,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:43:13,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:43:15,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:43:18,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:43:20,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:43:33,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:43:35,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:43:37,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:43:50,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:50,786 INFO L93 Difference]: Finished difference Result 9633 states and 15179 transitions. [2022-11-18 19:43:50,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-18 19:43:50,788 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.5161290322580645) internal successors, (109), 27 states have internal predecessors, (109), 12 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (17), 14 states have call predecessors, (17), 12 states have call successors, (17) Word has length 152 [2022-11-18 19:43:50,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:50,852 INFO L225 Difference]: With dead ends: 9633 [2022-11-18 19:43:50,852 INFO L226 Difference]: Without dead ends: 9631 [2022-11-18 19:43:50,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=673, Invalid=4019, Unknown=0, NotChecked=0, Total=4692 [2022-11-18 19:43:50,858 INFO L413 NwaCegarLoop]: 4350 mSDtfsCounter, 8744 mSDsluCounter, 45983 mSDsCounter, 0 mSdLazyCounter, 38799 mSolverCounterSat, 8394 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 99.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8795 SdHoareTripleChecker+Valid, 50333 SdHoareTripleChecker+Invalid, 47213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 8394 IncrementalHoareTripleChecker+Valid, 38799 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 104.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:50,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8795 Valid, 50333 Invalid, 47213 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [8394 Valid, 38799 Invalid, 20 Unknown, 0 Unchecked, 104.6s Time] [2022-11-18 19:43:50,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9631 states. [2022-11-18 19:43:51,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9631 to 3065. [2022-11-18 19:43:51,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3065 states, 2265 states have (on average 1.405298013245033) internal successors, (3183), 2347 states have internal predecessors, (3183), 633 states have call successors, (633), 161 states have call predecessors, (633), 166 states have return successors, (668), 605 states have call predecessors, (668), 633 states have call successors, (668) [2022-11-18 19:43:51,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3065 states to 3065 states and 4484 transitions. [2022-11-18 19:43:51,937 INFO L78 Accepts]: Start accepts. Automaton has 3065 states and 4484 transitions. Word has length 152 [2022-11-18 19:43:51,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:43:51,938 INFO L495 AbstractCegarLoop]: Abstraction has 3065 states and 4484 transitions. [2022-11-18 19:43:51,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.5161290322580645) internal successors, (109), 27 states have internal predecessors, (109), 12 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (17), 14 states have call predecessors, (17), 12 states have call successors, (17) [2022-11-18 19:43:51,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3065 states and 4484 transitions. [2022-11-18 19:43:51,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-18 19:43:51,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:43:51,949 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:43:51,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 19:43:51,950 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:43:51,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:51,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1181799274, now seen corresponding path program 1 times [2022-11-18 19:43:51,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:51,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985855574] [2022-11-18 19:43:51,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:51,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:52,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:43:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:52,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:43:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:52,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:43:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:52,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:43:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:52,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:43:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:52,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 19:43:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:52,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:43:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:52,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 19:43:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:52,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 19:43:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:52,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 19:43:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:52,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-18 19:43:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:52,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 19:43:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:52,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-18 19:43:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:52,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-18 19:43:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:52,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-18 19:43:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:52,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-18 19:43:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:52,244 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-18 19:43:52,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:52,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985855574] [2022-11-18 19:43:52,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985855574] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:43:52,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000080622] [2022-11-18 19:43:52,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:52,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:52,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:43:52,250 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:43:52,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:43:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:52,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 1330 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:43:52,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:43:53,100 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:43:53,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:43:53,268 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-18 19:43:53,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000080622] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:43:53,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:43:53,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 11 [2022-11-18 19:43:53,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634323428] [2022-11-18 19:43:53,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:43:53,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:43:53,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:53,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:43:53,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:43:53,271 INFO L87 Difference]: Start difference. First operand 3065 states and 4484 transitions. Second operand has 11 states, 11 states have (on average 18.181818181818183) internal successors, (200), 10 states have internal predecessors, (200), 7 states have call successors, (40), 4 states have call predecessors, (40), 3 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2022-11-18 19:44:01,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:44:01,064 INFO L93 Difference]: Finished difference Result 10131 states and 15395 transitions. [2022-11-18 19:44:01,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:44:01,068 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 18.181818181818183) internal successors, (200), 10 states have internal predecessors, (200), 7 states have call successors, (40), 4 states have call predecessors, (40), 3 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) Word has length 156 [2022-11-18 19:44:01,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:44:01,092 INFO L225 Difference]: With dead ends: 10131 [2022-11-18 19:44:01,092 INFO L226 Difference]: Without dead ends: 7106 [2022-11-18 19:44:01,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:44:01,101 INFO L413 NwaCegarLoop]: 1406 mSDtfsCounter, 4951 mSDsluCounter, 4665 mSDsCounter, 0 mSdLazyCounter, 4343 mSolverCounterSat, 1436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5365 SdHoareTripleChecker+Valid, 6071 SdHoareTripleChecker+Invalid, 5779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1436 IncrementalHoareTripleChecker+Valid, 4343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:44:01,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5365 Valid, 6071 Invalid, 5779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1436 Valid, 4343 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-18 19:44:01,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7106 states. [2022-11-18 19:44:02,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7106 to 3121. [2022-11-18 19:44:02,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3121 states, 2315 states have (on average 1.406047516198704) internal successors, (3255), 2397 states have internal predecessors, (3255), 639 states have call successors, (639), 161 states have call predecessors, (639), 166 states have return successors, (674), 611 states have call predecessors, (674), 639 states have call successors, (674) [2022-11-18 19:44:02,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 4568 transitions. [2022-11-18 19:44:02,128 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 4568 transitions. Word has length 156 [2022-11-18 19:44:02,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:44:02,128 INFO L495 AbstractCegarLoop]: Abstraction has 3121 states and 4568 transitions. [2022-11-18 19:44:02,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.181818181818183) internal successors, (200), 10 states have internal predecessors, (200), 7 states have call successors, (40), 4 states have call predecessors, (40), 3 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2022-11-18 19:44:02,129 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 4568 transitions. [2022-11-18 19:44:02,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-18 19:44:02,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:44:02,137 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:44:02,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-18 19:44:02,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 19:44:02,345 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:44:02,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:44:02,345 INFO L85 PathProgramCache]: Analyzing trace with hash 63283275, now seen corresponding path program 1 times [2022-11-18 19:44:02,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:44:02,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009693791] [2022-11-18 19:44:02,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:02,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:44:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:44:02,716 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:44:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:44:03,034 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:44:03,034 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:44:03,036 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-18 19:44:03,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 19:44:03,042 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:44:03,047 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 19:44:03,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 07:44:03 BoogieIcfgContainer [2022-11-18 19:44:03,241 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 19:44:03,242 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 19:44:03,242 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 19:44:03,242 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 19:44:03,243 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:35:59" (3/4) ... [2022-11-18 19:44:03,246 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-18 19:44:03,246 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 19:44:03,247 INFO L158 Benchmark]: Toolchain (without parser) took 490549.36ms. Allocated memory was 138.4MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 96.0MB in the beginning and 803.3MB in the end (delta: -707.3MB). Peak memory consumption was 431.2MB. Max. memory is 16.1GB. [2022-11-18 19:44:03,251 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 83.9MB. Free memory was 41.3MB in the beginning and 41.2MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:44:03,251 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2257.46ms. Allocated memory was 138.4MB in the beginning and 195.0MB in the end (delta: 56.6MB). Free memory was 96.0MB in the beginning and 76.7MB in the end (delta: 19.3MB). Peak memory consumption was 79.8MB. Max. memory is 16.1GB. [2022-11-18 19:44:03,251 INFO L158 Benchmark]: Boogie Procedure Inliner took 266.20ms. Allocated memory is still 195.0MB. Free memory was 76.7MB in the beginning and 137.0MB in the end (delta: -60.3MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. [2022-11-18 19:44:03,252 INFO L158 Benchmark]: Boogie Preprocessor took 239.18ms. Allocated memory is still 195.0MB. Free memory was 137.0MB in the beginning and 120.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-18 19:44:03,252 INFO L158 Benchmark]: RCFGBuilder took 3714.64ms. Allocated memory was 195.0MB in the beginning and 310.4MB in the end (delta: 115.3MB). Free memory was 120.2MB in the beginning and 181.7MB in the end (delta: -61.5MB). Peak memory consumption was 91.6MB. Max. memory is 16.1GB. [2022-11-18 19:44:03,253 INFO L158 Benchmark]: TraceAbstraction took 484055.98ms. Allocated memory was 310.4MB in the beginning and 1.3GB in the end (delta: 966.8MB). Free memory was 180.7MB in the beginning and 803.3MB in the end (delta: -622.6MB). Peak memory consumption was 344.2MB. Max. memory is 16.1GB. [2022-11-18 19:44:03,253 INFO L158 Benchmark]: Witness Printer took 4.57ms. Allocated memory is still 1.3GB. Free memory is still 803.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:44:03,261 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 83.9MB. Free memory was 41.3MB in the beginning and 41.2MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2257.46ms. Allocated memory was 138.4MB in the beginning and 195.0MB in the end (delta: 56.6MB). Free memory was 96.0MB in the beginning and 76.7MB in the end (delta: 19.3MB). Peak memory consumption was 79.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 266.20ms. Allocated memory is still 195.0MB. Free memory was 76.7MB in the beginning and 137.0MB in the end (delta: -60.3MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 239.18ms. Allocated memory is still 195.0MB. Free memory was 137.0MB in the beginning and 120.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * RCFGBuilder took 3714.64ms. Allocated memory was 195.0MB in the beginning and 310.4MB in the end (delta: 115.3MB). Free memory was 120.2MB in the beginning and 181.7MB in the end (delta: -61.5MB). Peak memory consumption was 91.6MB. Max. memory is 16.1GB. * TraceAbstraction took 484055.98ms. Allocated memory was 310.4MB in the beginning and 1.3GB in the end (delta: 966.8MB). Free memory was 180.7MB in the beginning and 803.3MB in the end (delta: -622.6MB). Peak memory consumption was 344.2MB. Max. memory is 16.1GB. * Witness Printer took 4.57ms. Allocated memory is still 1.3GB. Free memory is still 803.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 7129]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 4873, overapproximation of shiftRight at line 4735, overapproximation of bitwiseAnd at line 4735. Possible FailurePath: [L5850-L5853] static struct net_device_ops const sl_netdev_ops = {& sl_init, & sl_uninit, & sl_open, & sl_close, & sl_xmit, 0, 0, 0, 0, 0, 0, & sl_ioctl, 0, & sl_change_mtu, 0, & sl_tx_timeout, & sl_get_stats64, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; [L6910] int LDV_IN_INTERRUPT ; [L5035] static int slip_maxdev = 256; [L5034] static struct net_device **slip_devs ; [L6723-L6726] static struct tty_ldisc_ops sl_ldisc = {21507, (char *)"slip", 0, 0, & slip_open, & slip_close, 0, 0, 0, 0, & slip_ioctl, & slip_compat_ioctl, 0, 0, & slip_hangup, & slip_receive_buf, & slip_write_wakeup, 0, & __this_module, 0}; VAL [__this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=0, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256] [L6913] int res_sl_init_14 ; [L6914] int res_sl_open_11 ; [L6915] int res_sl_close_10 ; [L6916] struct sk_buff *var_group2 ; [L6917] struct rtnl_link_stats64 var_group3 ; [L6918] int var_sl_change_mtu_12_p1 ; [L6919] struct ifreq var_group4 ; [L6920] int var_sl_ioctl_30_p2 ; [L6921] struct tty_struct var_group5 ; [L6922] int res_slip_open_21 ; [L6923] struct file *var_group6 ; [L6924] unsigned int var_slip_ioctl_28_p2 ; [L6925] unsigned long var_slip_ioctl_28_p3 ; [L6926] unsigned int var_slip_compat_ioctl_29_p2 ; [L6927] unsigned long var_slip_compat_ioctl_29_p3 ; [L6928] unsigned char const *var_slip_receive_buf_18_p1 ; [L6929] char *var_slip_receive_buf_18_p2 ; [L6930] int var_slip_receive_buf_18_p3 ; [L6931] unsigned long var_sl_keepalive_34_p0 ; [L6932] unsigned long var_sl_outfill_33_p0 ; [L6933] int ldv_s_sl_netdev_ops_net_device_ops ; [L6934] int ldv_s_sl_ldisc_tty_ldisc_ops ; [L6935] int tmp ; [L6936] int tmp___0 ; [L6937] int tmp___1 ; VAL [__this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=0, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256, var_group3={35:0}, var_group4={33:0}, var_group5={31:0}] [L6939] CALL, EXPR dev_alloc_skb(1U) VAL [\old(arg0)=1, __this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=0, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256] [L7186] CALL, EXPR ldv_malloc(sizeof(struct sk_buff)) VAL [\old(size)=243, __this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=0, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256] [L4847] COND FALSE !(__VERIFIER_nondet_int()) [L4852] return ((void *)0); VAL [\old(size)=243, \result={0:0}, __this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=0, size=243, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256] [L7186] RET, EXPR ldv_malloc(sizeof(struct sk_buff)) VAL [\old(arg0)=1, __this_module={4294967302:4294967304}, arg0=1, LDV_IN_INTERRUPT=0, ldv_malloc(sizeof(struct sk_buff))={0:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256] [L7186] return ldv_malloc(sizeof(struct sk_buff)); [L6939] RET, EXPR dev_alloc_skb(1U) VAL [__this_module={4294967302:4294967304}, dev_alloc_skb(1U)={0:0}, LDV_IN_INTERRUPT=0, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256, var_group3={35:0}, var_group4={33:0}, var_group5={31:0}] [L6939] var_group2 = dev_alloc_skb(1U) [L6940] ldv_s_sl_netdev_ops_net_device_ops = 0 [L6941] ldv_s_sl_ldisc_tty_ldisc_ops = 0 [L6942] LDV_IN_INTERRUPT = 1 [L6943] FCALL ldv_initialize() [L6944] FCALL ldv_handler_precall() VAL [__this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=1, ldv_s_sl_ldisc_tty_ldisc_ops=0, ldv_s_sl_netdev_ops_net_device_ops=0, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256, var_group2={0:0}, var_group3={35:0}, var_group4={33:0}, var_group5={31:0}] [L6945] CALL, EXPR slip_init() [L6729] int status ; [L6730] void *tmp ; VAL [__this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256] [L6732] COND FALSE !(slip_maxdev <= 3) VAL [__this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256] [L6740] CALL, EXPR kzalloc((unsigned long )slip_maxdev * 8UL, 208U) [L4871] void *tmp ; VAL [\old(flags)=208, \old(size)=2048, __this_module={4294967302:4294967304}, flags=208, LDV_IN_INTERRUPT=1, size=2048, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256] [L4873] CALL, EXPR kmalloc(size, flags | 32768U) VAL [__this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256] [L4862] void *tmp___2 ; [L4864] CALL, EXPR __kmalloc(size, flags) [L4857] CALL, EXPR ldv_malloc(size) VAL [__this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256] [L4847] COND TRUE __VERIFIER_nondet_int() [L4848] void *res = malloc(size); [L4849] CALL, EXPR ldv_is_err(res) [L4843] return ((unsigned long)ptr > ((unsigned long)-4095)); VAL [\result=0, __this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=1, ptr={-36893488147419103231:0}, ptr={-36893488147419103231:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256] [L4849] RET, EXPR ldv_is_err(res) [L4849] CALL assume_abort_if_not(!ldv_is_err(res)) [L4838] COND FALSE !(!cond) VAL [\old(cond)=1, __this_module={4294967302:4294967304}, cond=1, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256] [L4849] RET assume_abort_if_not(!ldv_is_err(res)) [L4850] return res; VAL [\old(size)=2048, \result={-36893488147419103231:0}, __this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=1, res={-36893488147419103231:0}, size=2048, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256] [L4857] RET, EXPR ldv_malloc(size) VAL [\old(size)=2048, \old(t)=32768, __this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=1, ldv_malloc(size)={-36893488147419103231:0}, size=2048, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256, t=32768] [L4857] return ldv_malloc(size); [L4864] RET, EXPR __kmalloc(size, flags) [L4864] tmp___2 = __kmalloc(size, flags) [L4865] return (tmp___2); VAL [\old(flags)=32768, \old(size)=2048, \result={-36893488147419103231:0}, __this_module={4294967302:4294967304}, flags=32768, LDV_IN_INTERRUPT=1, size=2048, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256, tmp___2={-36893488147419103231:0}] [L4873] RET, EXPR kmalloc(size, flags | 32768U) VAL [\old(flags)=208, \old(size)=2048, __this_module={4294967302:4294967304}, flags=208, kmalloc(size, flags | 32768U)={-36893488147419103231:0}, LDV_IN_INTERRUPT=1, size=2048, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256] [L4873] tmp = kmalloc(size, flags | 32768U) [L4874] return (tmp); VAL [\old(flags)=208, \old(size)=2048, \result={-36893488147419103231:0}, __this_module={4294967302:4294967304}, flags=208, LDV_IN_INTERRUPT=1, size=2048, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256, tmp={-36893488147419103231:0}] [L6740] RET, EXPR kzalloc((unsigned long )slip_maxdev * 8UL, 208U) [L6740] tmp = kzalloc((unsigned long )slip_maxdev * 8UL, 208U) [L6741] slip_devs = (struct net_device **)tmp VAL [__this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, tmp={-36893488147419103231:0}] [L6742] COND FALSE !((unsigned long )slip_devs == (unsigned long )((struct net_device **)0)) [L6747] CALL, EXPR tty_register_ldisc(1, & sl_ldisc) [L7287] return __VERIFIER_nondet_int(); [L6747] RET, EXPR tty_register_ldisc(1, & sl_ldisc) [L6747] status = tty_register_ldisc(1, & sl_ldisc) [L6748] COND FALSE !(status != 0) VAL [__this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, status=0, tmp={-36893488147419103231:0}] [L6753] return (status); VAL [\result=0, __this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, status=0, tmp={-36893488147419103231:0}] [L6945] RET, EXPR slip_init() [L6945] tmp = slip_init() [L6946] COND FALSE !(tmp != 0) VAL [__this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=1, ldv_s_sl_ldisc_tty_ldisc_ops=0, ldv_s_sl_netdev_ops_net_device_ops=0, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, tmp=0, var_group2={0:0}, var_group3={35:0}, var_group4={33:0}, var_group5={31:0}] [L7076] tmp___1 = __VERIFIER_nondet_int() [L7077] COND TRUE (tmp___1 != 0 || ldv_s_sl_netdev_ops_net_device_ops != 0) || ldv_s_sl_ldisc_tty_ldisc_ops != 0 VAL [__this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=1, ldv_s_sl_ldisc_tty_ldisc_ops=0, ldv_s_sl_netdev_ops_net_device_ops=0, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, tmp=0, tmp___1=-2, var_group2={0:0}, var_group3={35:0}, var_group4={33:0}, var_group5={31:0}] [L6952] tmp___0 = __VERIFIER_nondet_int() [L6954] case 0: [L6967] case 1: [L6980] case 2: [L6993] case 3: [L7001] case 4: [L7005] case 5: [L7009] case 6: [L7013] case 7: [L7017] case 8: [L7021] case 9: VAL [__this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=1, ldv_s_sl_ldisc_tty_ldisc_ops=0, ldv_s_sl_netdev_ops_net_device_ops=0, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, tmp=0, tmp___0=9, tmp___1=-2, var_group2={0:0}, var_group3={35:0}, var_group4={33:0}, var_group5={31:0}] [L7022] COND TRUE ldv_s_sl_ldisc_tty_ldisc_ops == 0 VAL [__this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=1, ldv_s_sl_ldisc_tty_ldisc_ops=0, ldv_s_sl_netdev_ops_net_device_ops=0, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, tmp=0, tmp___0=9, tmp___1=-2, var_group2={0:0}, var_group3={35:0}, var_group4={33:0}, var_group5={31:0}] [L7023] FCALL ldv_handler_precall() VAL [__this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=1, ldv_s_sl_ldisc_tty_ldisc_ops=0, ldv_s_sl_netdev_ops_net_device_ops=0, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, tmp=0, tmp___0=9, tmp___1=-2, var_group2={0:0}, var_group3={35:0}, var_group4={33:0}, var_group5={31:0}] [L7024] CALL ldv_slip_open_3(&var_group5) [L7117] ldv_func_ret_type___1 ldv_func_res ; [L7118] int tmp ; [L7120] CALL, EXPR slip_open(tty) [L6037] struct slip *sl ; [L6038] int err ; [L6039] int tmp ; [L6040] dev_t tmp___0 ; [L6041] struct task_struct *tmp___1 ; [L6042] int tmp___2 ; [L6044] CALL, EXPR capable(12) [L7172] return __VERIFIER_nondet_int(); [L6044] RET, EXPR capable(12) [L6044] tmp = capable(12) [L6045] COND FALSE !(tmp == 0) [L6049] EXPR tty->ops [L6049] EXPR (tty->ops)->write VAL [(tty->ops)->write={38:-37}, __this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, tmp=1, tty={31:0}, tty={31:0}, tty->ops={4294967297:-3}] [L6049-L6051] COND FALSE !((unsigned long )(tty->ops)->write == (unsigned long )((int (* )(struct tty_struct * , unsigned char const * , int ))0)) [L6055] FCALL rtnl_lock() [L6056] CALL sl_sync() [L5925] int i ; [L5926] struct net_device *dev ; [L5927] struct slip *sl ; [L5928] void *tmp ; [L5930] i = 0 VAL [__this_module={4294967302:4294967304}, i=0, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L5951] COND TRUE i < slip_maxdev VAL [__this_module={4294967302:4294967304}, i=0, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L5933] EXPR slip_devs + (unsigned long )i [L5933] dev = *(slip_devs + (unsigned long )i) [L5934] COND FALSE !((unsigned long )dev == (unsigned long )((struct net_device *)0)) VAL [__this_module={4294967302:4294967304}, dev={2497:-2496}, i=0, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L5938] CALL, EXPR netdev_priv((struct net_device const *)dev) VAL [__this_module={4294967302:4294967304}, dev={2497:-2496}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L4903] return ((void *)dev + 2496U); VAL [\result={2497:0}, __this_module={4294967302:4294967304}, dev={2497:-2496}, dev={2497:-2496}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L5938] RET, EXPR netdev_priv((struct net_device const *)dev) VAL [__this_module={4294967302:4294967304}, dev={2497:-2496}, i=0, LDV_IN_INTERRUPT=1, netdev_priv((struct net_device const *)dev)={2497:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L5938] tmp = netdev_priv((struct net_device const *)dev) [L5939] sl = (struct slip *)tmp [L5940] EXPR sl->tty [L5940] (unsigned long )sl->tty != (unsigned long )((struct tty_struct *)0) || (unsigned int )sl->leased != 0U VAL [(unsigned long )sl->tty != (unsigned long )((struct tty_struct *)0) || (unsigned int )sl->leased != 0U=1, __this_module={4294967302:4294967304}, dev={2497:-2496}, i=0, LDV_IN_INTERRUPT=1, sl={2497:0}, sl->tty={39:-38}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, tmp={2497:0}] [L5940] COND TRUE (unsigned long )sl->tty != (unsigned long )((struct tty_struct *)0) || (unsigned int )sl->leased != 0U [L5949] i = i + 1 VAL [__this_module={4294967302:4294967304}, dev={2497:-2496}, i=1, LDV_IN_INTERRUPT=1, sl={2497:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, tmp={2497:0}] [L5951] COND TRUE i < slip_maxdev VAL [__this_module={4294967302:4294967304}, dev={2497:-2496}, i=1, LDV_IN_INTERRUPT=1, sl={2497:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, tmp={2497:0}] [L5933] EXPR slip_devs + (unsigned long )i [L5933] dev = *(slip_devs + (unsigned long )i) [L5934] COND TRUE (unsigned long )dev == (unsigned long )((struct net_device *)0) VAL [__this_module={4294967302:4294967304}, dev={0:0}, i=1, LDV_IN_INTERRUPT=1, sl={2497:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, tmp={2497:0}] [L6056] RET sl_sync() [L6057] EXPR tty->disc_data [L6057] sl = (struct slip *)tty->disc_data [L6058] err = -17 [L6059] (unsigned long )sl != (unsigned long )((struct slip *)0) && sl->magic == 21250 [L6059] EXPR sl->magic [L6059] (unsigned long )sl != (unsigned long )((struct slip *)0) && sl->magic == 21250 VAL [(unsigned long )sl != (unsigned long )((struct slip *)0) && sl->magic == 21250=0, __this_module={4294967302:4294967304}, err=-17, LDV_IN_INTERRUPT=1, sl={-41:42}, sl->magic=4294967299, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, tmp=1, tty={31:0}, tty={31:0}] [L6059] COND FALSE !((unsigned long )sl != (unsigned long )((struct slip *)0) && sl->magic == 21250) [L6063] err = -23 VAL [__this_module={4294967302:4294967304}, err=-23, LDV_IN_INTERRUPT=1, sl={-41:42}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, tmp=1, tty={31:0}, tty={31:0}] [L6064] CALL, EXPR tty_devnum(tty) VAL [__this_module={4294967302:4294967304}, arg0={31:0}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L7276] return __VERIFIER_nondet_uint(); [L6064] RET, EXPR tty_devnum(tty) VAL [__this_module={4294967302:4294967304}, err=-23, LDV_IN_INTERRUPT=1, sl={-41:42}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, tmp=1, tty={31:0}, tty={31:0}, tty_devnum(tty)=4294967292] [L6064] tmp___0 = tty_devnum(tty) [L6065] CALL, EXPR sl_alloc(tmp___0) [L5961] int i ; [L5962] struct net_device *dev ; [L5963] struct slip *sl ; [L5964] void *tmp ; [L5965] int tmp___0 ; [L5966] char name[16U] ; [L5967] void *tmp___1 ; [L5968] struct lock_class_key __key ; [L5969] struct lock_class_key __key___0 ; [L5970] struct lock_class_key __key___1 ; [L5972] dev = 0 VAL [\old(line)=4294967292, __key={30:0}, __key___0={47:0}, __key___1={49:0}, __this_module={4294967302:4294967304}, dev={0:0}, LDV_IN_INTERRUPT=1, line=4294967292, name={43:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L5973] COND FALSE !((unsigned long )slip_devs == (unsigned long )((struct net_device **)0)) [L5977] i = 0 VAL [\old(line)=4294967292, __key={30:0}, __key___0={47:0}, __key___1={49:0}, __this_module={4294967302:4294967304}, dev={0:0}, i=0, LDV_IN_INTERRUPT=1, line=4294967292, name={43:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L5987] COND TRUE i < slip_maxdev VAL [\old(line)=4294967292, __key={30:0}, __key___0={47:0}, __key___1={49:0}, __this_module={4294967302:4294967304}, dev={0:0}, i=0, LDV_IN_INTERRUPT=1, line=4294967292, name={43:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L5980] EXPR slip_devs + (unsigned long )i [L5980] dev = *(slip_devs + (unsigned long )i) [L5981] COND FALSE !((unsigned long )dev == (unsigned long )((struct net_device *)0)) [L5985] i = i + 1 VAL [\old(line)=4294967292, __key={30:0}, __key___0={47:0}, __key___1={49:0}, __this_module={4294967302:4294967304}, dev={2497:-2496}, i=1, LDV_IN_INTERRUPT=1, line=4294967292, name={43:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L5987] COND TRUE i < slip_maxdev VAL [\old(line)=4294967292, __key={30:0}, __key___0={47:0}, __key___1={49:0}, __this_module={4294967302:4294967304}, dev={2497:-2496}, i=1, LDV_IN_INTERRUPT=1, line=4294967292, name={43:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L5980] EXPR slip_devs + (unsigned long )i [L5980] dev = *(slip_devs + (unsigned long )i) [L5981] COND TRUE (unsigned long )dev == (unsigned long )((struct net_device *)0) VAL [\old(line)=4294967292, __key={30:0}, __key___0={47:0}, __key___1={49:0}, __this_module={4294967302:4294967304}, dev={0:0}, i=1, LDV_IN_INTERRUPT=1, line=4294967292, name={43:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L5992] COND FALSE !(i >= slip_maxdev) VAL [\old(line)=4294967292, __key={30:0}, __key___0={47:0}, __key___1={49:0}, __this_module={4294967302:4294967304}, dev={0:0}, i=1, LDV_IN_INTERRUPT=1, line=4294967292, name={43:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L5996] COND FALSE !((unsigned long )dev != (unsigned long )((struct net_device *)0)) VAL [\old(line)=4294967292, __key={30:0}, __key___0={47:0}, __key___1={49:0}, __this_module={4294967302:4294967304}, dev={0:0}, i=1, LDV_IN_INTERRUPT=1, line=4294967292, name={43:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L6008] COND TRUE (unsigned long )dev == (unsigned long )((struct net_device *)0) [L6010] CALL, EXPR alloc_netdev_mqs(472, (char const *)(& name), & sl_setup, 1U, 1U) [L7168] CALL, EXPR ldv_malloc(sizeof(struct net_device)) VAL [__this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L4847] COND TRUE __VERIFIER_nondet_int() [L4848] void *res = malloc(size); [L4849] CALL, EXPR ldv_is_err(res) [L4843] return ((unsigned long)ptr > ((unsigned long)-4095)); VAL [\result=0, __this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=1, ptr={-18446744073709551615:0}, ptr={-18446744073709551615:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L4849] RET, EXPR ldv_is_err(res) [L4849] CALL assume_abort_if_not(!ldv_is_err(res)) [L4838] COND FALSE !(!cond) VAL [\old(cond)=1, __this_module={4294967302:4294967304}, cond=1, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L4849] RET assume_abort_if_not(!ldv_is_err(res)) [L4850] return res; VAL [\old(size)=2255, \result={-18446744073709551615:0}, __this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=1, res={-18446744073709551615:0}, size=2255, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L7168] RET, EXPR ldv_malloc(sizeof(struct net_device)) VAL [\old(arg0)=472, \old(arg3)=1, \old(arg4)=1, __this_module={4294967302:4294967304}, arg0=472, arg1={43:0}, arg1={43:0}, arg2={-1:10}, arg2={-1:10}, arg3=1, arg4=1, LDV_IN_INTERRUPT=1, ldv_malloc(sizeof(struct net_device))={-18446744073709551615:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L7168] return ldv_malloc(sizeof(struct net_device)); [L6010] RET, EXPR alloc_netdev_mqs(472, (char const *)(& name), & sl_setup, 1U, 1U) [L6010] dev = alloc_netdev_mqs(472, (char const *)(& name), & sl_setup, 1U, 1U) [L6011] COND FALSE !((unsigned long )dev == (unsigned long )((struct net_device *)0)) [L6015] dev->base_addr = (unsigned long )i VAL [\old(line)=4294967292, __key={30:0}, __key___0={47:0}, __key___1={49:0}, __this_module={4294967302:4294967304}, dev={-18446744073709551615:0}, i=1, LDV_IN_INTERRUPT=1, line=4294967292, name={43:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L6018] CALL, EXPR netdev_priv((struct net_device const *)dev) VAL [__this_module={4294967302:4294967304}, dev={-18446744073709551615:0}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L4903] return ((void *)dev + 2496U); VAL [\result={-18446744073709551615:2496}, __this_module={4294967302:4294967304}, dev={-18446744073709551615:0}, dev={-18446744073709551615:0}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L6018] RET, EXPR netdev_priv((struct net_device const *)dev) VAL [\old(line)=4294967292, __key={30:0}, __key___0={47:0}, __key___1={49:0}, __this_module={4294967302:4294967304}, dev={-18446744073709551615:0}, i=1, LDV_IN_INTERRUPT=1, line=4294967292, name={43:0}, netdev_priv((struct net_device const *)dev)={-18446744073709551615:2496}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L6018] tmp___1 = netdev_priv((struct net_device const *)dev) [L6019] sl = (struct slip *)tmp___1 [L6020] sl->magic = 21250 [L6021] sl->dev = dev [L6022] CALL spinlock_check(& sl->lock) [L4778] return (& lock->ldv_5934.rlock); VAL [\result={-18446744073709551615:2516}, __this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=1, lock={-18446744073709551615:2516}, lock={-18446744073709551615:2516}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L6022] RET spinlock_check(& sl->lock) [L6023] FCALL __raw_spin_lock_init(& sl->lock.ldv_5934.rlock, "&(&sl->lock)->rlock", & __key) [L6024] sl->mode = 8U VAL [\old(line)=4294967292, __key={30:0}, __key___0={47:0}, __key___1={49:0}, __this_module={4294967302:4294967304}, dev={-18446744073709551615:0}, i=1, LDV_IN_INTERRUPT=1, line=4294967292, name={43:0}, sl={-18446744073709551615:2496}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, tmp___1={-18446744073709551615:2496}] [L6025] FCALL init_timer_key(& sl->keepalive_timer, "&sl->keepalive_timer", & __key___0) VAL [\old(line)=4294967292, __key={30:0}, __key___0={47:0}, __key___1={49:0}, __this_module={4294967302:4294967304}, dev={-18446744073709551615:0}, i=1, LDV_IN_INTERRUPT=1, line=4294967292, name={43:0}, sl={-18446744073709551615:2496}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, tmp___1={-18446744073709551615:2496}] [L6026] sl->keepalive_timer.data = (unsigned long )sl [L6027] sl->keepalive_timer.function = & sl_keepalive VAL [\old(line)=4294967292, __key={30:0}, __key___0={47:0}, __key___1={49:0}, __this_module={4294967302:4294967304}, dev={-18446744073709551615:0}, i=1, LDV_IN_INTERRUPT=1, line=4294967292, name={43:0}, sl={-18446744073709551615:2496}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, tmp___1={-18446744073709551615:2496}] [L6028] FCALL init_timer_key(& sl->outfill_timer, "&sl->outfill_timer", & __key___1) VAL [\old(line)=4294967292, __key={30:0}, __key___0={47:0}, __key___1={49:0}, __this_module={4294967302:4294967304}, dev={-18446744073709551615:0}, i=1, LDV_IN_INTERRUPT=1, line=4294967292, name={43:0}, sl={-18446744073709551615:2496}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, tmp___1={-18446744073709551615:2496}] [L6029] sl->outfill_timer.data = (unsigned long )sl [L6030] sl->outfill_timer.function = & sl_outfill [L6031] *(slip_devs + (unsigned long )i) = dev [L6032] return (sl); [L6032] return (sl); [L6032] return (sl); [L6032] return (sl); [L6032] return (sl); VAL [\old(line)=4294967292, \result={-18446744073709551615:2496}, __this_module={4294967302:4294967304}, dev={-18446744073709551615:0}, i=1, LDV_IN_INTERRUPT=1, line=4294967292, sl={-18446744073709551615:2496}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, tmp___1={-18446744073709551615:2496}] [L6065] RET, EXPR sl_alloc(tmp___0) [L6065] sl = sl_alloc(tmp___0) [L6066] COND FALSE !((unsigned long )sl == (unsigned long )((struct slip *)0)) [L6070] sl->tty = tty [L6071] tty->disc_data = (void *)sl VAL [__this_module={4294967302:4294967304}, err=-23, LDV_IN_INTERRUPT=1, sl={-18446744073709551615:2496}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, tmp=1, tmp___0=4294967292, tty={31:0}, tty={31:0}] [L6072] CALL, EXPR tty_devnum(tty) VAL [__this_module={4294967302:4294967304}, arg0={31:0}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L7276] return __VERIFIER_nondet_uint(); [L6072] RET, EXPR tty_devnum(tty) VAL [__this_module={4294967302:4294967304}, err=-23, LDV_IN_INTERRUPT=1, sl={-18446744073709551615:2496}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, tmp=1, tmp___0=4294967292, tty={31:0}, tty={31:0}, tty_devnum(tty)=4294967300] [L6072] sl->line = tty_devnum(tty) [L6073] CALL, EXPR get_current() VAL [__this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L4746] struct task_struct *pfo_ret__ ; [L4749] case 1UL: [L4752] case 2UL: [L4755] case 4UL: [L4758] case 8UL: VAL [__this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L4765] return (pfo_ret__); VAL [\result={4294967308:-4}, __this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=1, pfo_ret__={4294967308:-4}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L6073] RET, EXPR get_current() VAL [__this_module={4294967302:4294967304}, err=-23, get_current()={4294967308:-4}, LDV_IN_INTERRUPT=1, sl={-18446744073709551615:2496}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, tmp=1, tmp___0=4294967292, tty={31:0}, tty={31:0}] [L6073] tmp___1 = get_current() [L6074] EXPR tmp___1->pid [L6074] sl->pid = tmp___1->pid [L6075] CALL, EXPR constant_test_bit(0U, (unsigned long const volatile *)(& sl->flags)) VAL [\old(nr)=0, __this_module={4294967302:4294967304}, addr={-18446744073709551615:2668}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] [L4735] EXPR addr + (unsigned long )(nr / 64U) [L4735] return ((int )((unsigned long )*(addr + (unsigned long )(nr / 64U)) >> ((int )nr & 63)) & 1); [L6075] RET, EXPR constant_test_bit(0U, (unsigned long const volatile *)(& sl->flags)) VAL [__this_module={4294967302:4294967304}, constant_test_bit(0U, (unsigned long const volatile *)(& sl->flags))=-7, err=-23, LDV_IN_INTERRUPT=1, sl={-18446744073709551615:2496}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, tmp=1, tmp___0=4294967292, tmp___1={4294967308:-4}, tty={31:0}, tty={31:0}] [L6075] tmp___2 = constant_test_bit(0U, (unsigned long const volatile *)(& sl->flags)) [L6076] COND FALSE !(tmp___2 == 0) VAL [__this_module={4294967302:4294967304}, err=-23, LDV_IN_INTERRUPT=1, sl={-18446744073709551615:2496}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, tmp=1, tmp___0=4294967292, tmp___1={4294967308:-4}, tmp___2=-7, tty={31:0}, tty={31:0}] [L6090] EXPR sl->keepalive VAL [__this_module={4294967302:4294967304}, err=-23, LDV_IN_INTERRUPT=1, sl={-18446744073709551615:2496}, sl->keepalive=0, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, tmp=1, tmp___0=4294967292, tmp___1={4294967308:-4}, tmp___2=-7, tty={31:0}, tty={31:0}] [L6090] COND FALSE !((unsigned int )sl->keepalive != 0U) [L6095] EXPR sl->outfill VAL [__this_module={4294967302:4294967304}, err=-23, LDV_IN_INTERRUPT=1, sl={-18446744073709551615:2496}, sl->outfill=0, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, tmp=1, tmp___0=4294967292, tmp___1={4294967308:-4}, tmp___2=-7, tty={31:0}, tty={31:0}] [L6095] COND FALSE !((unsigned int )sl->outfill != 0U) [L6100] FCALL rtnl_unlock() VAL [__this_module={4294967302:4294967304}, err=-23, LDV_IN_INTERRUPT=1, sl={-18446744073709551615:2496}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256, tmp=1, tmp___0=4294967292, tmp___1={4294967308:-4}, tmp___2=-7, tty={31:0}, tty={31:0}] [L6101] tty->receive_room = 65536U [L6102] EXPR sl->dev [L6102] EXPR (sl->dev)->base_addr [L6102] return ((int )(sl->dev)->base_addr); [L7120] RET, EXPR slip_open(tty) [L7120] tmp = slip_open(tty) [L7121] ldv_func_res = tmp [L7122] CALL ldv_check_callback_ret_val(ldv_func_res) [L7135] COND FALSE !(ret_val <= 0) [L7137] CALL ldv_error() [L7129] reach_error() VAL [__this_module={4294967302:4294967304}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={-36893488147419103231:0}, slip_maxdev=256] - StatisticsResult: Ultimate Automizer benchmark data CFG has 44 procedures, 963 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 483.8s, OverallIterations: 19, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.2s, AutomataDifference: 385.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 mSolverCounterUnknown, 63267 SdHoareTripleChecker+Valid, 354.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 60309 mSDsluCounter, 255128 SdHoareTripleChecker+Invalid, 330.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 8461 IncrementalHoareTripleChecker+Unchecked, 222500 mSDsCounter, 27437 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 189215 IncrementalHoareTripleChecker+Invalid, 225155 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27437 mSolverCounterUnsat, 32628 mSDtfsCounter, 189215 mSolverCounterSat, 2.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1825 GetRequests, 1481 SyntacticMatches, 19 SemanticMatches, 325 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5109 ImplicationChecksByTransitivity, 14.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3121occurred in iteration=18, InterpolantAutomatonStates: 244, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.9s AutomataMinimizationTime, 18 MinimizatonAttempts, 28391 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 53.5s SatisfiabilityAnalysisTime, 33.7s InterpolantComputationTime, 3010 NumberOfCodeBlocks, 3010 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 3094 ConstructedInterpolants, 25 QuantifiedInterpolants, 12643 SizeOfPredicates, 84 NumberOfNonLiveVariables, 7079 ConjunctsInSsa, 283 ConjunctsInUnsatCore, 26 InterpolantComputations, 15 PerfectInterpolantSequences, 403/431 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 [2022-11-18 19:44:03,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro --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 64bit --witnessprinter.graph.data.programhash 03b59b42cc833f5b28fc5dc7cc6711355c533ad94229ba44874c6d4d186d9dcb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:44:05,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:44:05,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:44:05,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:44:05,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:44:05,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:44:05,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:44:05,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:44:05,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:44:05,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:44:05,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:44:05,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:44:05,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:44:05,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:44:05,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:44:05,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:44:05,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:44:05,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:44:05,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:44:05,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:44:05,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:44:05,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:44:05,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:44:05,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:44:05,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:44:05,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:44:05,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:44:05,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:44:05,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:44:05,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:44:05,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:44:05,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:44:05,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:44:05,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:44:05,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:44:05,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:44:05,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:44:05,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:44:05,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:44:05,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:44:05,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:44:05,819 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-18 19:44:05,857 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:44:05,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:44:05,858 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:44:05,858 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:44:05,859 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:44:05,859 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:44:05,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:44:05,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:44:05,860 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:44:05,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:44:05,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:44:05,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:44:05,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:44:05,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:44:05,862 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 19:44:05,862 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 19:44:05,862 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 19:44:05,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:44:05,862 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:44:05,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:44:05,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:44:05,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:44:05,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:44:05,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:44:05,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:44:05,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:44:05,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:44:05,864 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 19:44:05,865 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 19:44:05,865 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:44:05,865 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:44:05,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:44:05,866 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 19:44:05,866 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_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03b59b42cc833f5b28fc5dc7cc6711355c533ad94229ba44874c6d4d186d9dcb [2022-11-18 19:44:06,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:44:06,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:44:06,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:44:06,251 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:44:06,254 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:44:06,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-11-18 19:44:06,333 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/data/c5291fe23/621eae161c40447b89d473aeff52bbf3/FLAGfa8f8d274 [2022-11-18 19:44:07,098 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:44:07,099 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-11-18 19:44:07,137 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/data/c5291fe23/621eae161c40447b89d473aeff52bbf3/FLAGfa8f8d274 [2022-11-18 19:44:07,190 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/data/c5291fe23/621eae161c40447b89d473aeff52bbf3 [2022-11-18 19:44:07,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:44:07,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:44:07,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:44:07,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:44:07,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:44:07,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:44:07" (1/1) ... [2022-11-18 19:44:07,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a7a3715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:07, skipping insertion in model container [2022-11-18 19:44:07,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:44:07" (1/1) ... [2022-11-18 19:44:07,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:44:07,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:44:08,784 WARN L234 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_1673cc29-8191-4eb2-a9c0-4cc1700fc298/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2022-11-18 19:44:08,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:44:08,839 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-18 19:44:08,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:44:09,171 WARN L234 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_1673cc29-8191-4eb2-a9c0-4cc1700fc298/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2022-11-18 19:44:09,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:44:09,202 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:44:09,487 WARN L234 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_1673cc29-8191-4eb2-a9c0-4cc1700fc298/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2022-11-18 19:44:09,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:44:09,678 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:44:09,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:09 WrapperNode [2022-11-18 19:44:09,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:44:09,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:44:09,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:44:09,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:44:09,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:09" (1/1) ... [2022-11-18 19:44:09,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:09" (1/1) ... [2022-11-18 19:44:09,910 INFO L138 Inliner]: procedures = 170, calls = 812, calls flagged for inlining = 80, calls inlined = 79, statements flattened = 2683 [2022-11-18 19:44:09,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:44:09,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:44:09,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:44:09,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:44:09,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:09" (1/1) ... [2022-11-18 19:44:09,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:09" (1/1) ... [2022-11-18 19:44:09,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:09" (1/1) ... [2022-11-18 19:44:09,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:09" (1/1) ... [2022-11-18 19:44:10,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:09" (1/1) ... [2022-11-18 19:44:10,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:09" (1/1) ... [2022-11-18 19:44:10,150 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:09" (1/1) ... [2022-11-18 19:44:10,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:09" (1/1) ... [2022-11-18 19:44:10,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:44:10,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:44:10,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:44:10,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:44:10,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:09" (1/1) ... [2022-11-18 19:44:10,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:44:10,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:44:10,233 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:44:10,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:44:10,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-18 19:44:10,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-18 19:44:10,286 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-18 19:44:10,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-18 19:44:10,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-18 19:44:10,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-18 19:44:10,287 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-18 19:44:10,287 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-18 19:44:10,287 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-18 19:44:10,288 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-18 19:44:10,288 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-11-18 19:44:10,288 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-11-18 19:44:10,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-18 19:44:10,288 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-18 19:44:10,288 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-18 19:44:10,289 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-18 19:44:10,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-18 19:44:10,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-18 19:44:10,289 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-18 19:44:10,289 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-18 19:44:10,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive_int [2022-11-18 19:44:10,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive_int [2022-11-18 19:44:10,290 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-18 19:44:10,290 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-18 19:44:10,290 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-18 19:44:10,290 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-18 19:44:10,290 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2022-11-18 19:44:10,290 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2022-11-18 19:44:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-18 19:44:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-18 19:44:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-18 19:44:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-18 19:44:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-18 19:44:10,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-18 19:44:10,292 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-11-18 19:44:10,292 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-11-18 19:44:10,292 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-18 19:44:10,292 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-18 19:44:10,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-18 19:44:10,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-18 19:44:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-18 19:44:10,293 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-18 19:44:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-18 19:44:10,293 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-18 19:44:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:44:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2022-11-18 19:44:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2022-11-18 19:44:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2022-11-18 19:44:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2022-11-18 19:44:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:44:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-18 19:44:10,295 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-18 19:44:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2022-11-18 19:44:10,295 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2022-11-18 19:44:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:44:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:44:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-18 19:44:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-18 19:44:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-18 19:44:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-18 19:44:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-18 19:44:10,296 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-18 19:44:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:44:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-18 19:44:10,297 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-18 19:44:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-18 19:44:10,297 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-18 19:44:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2022-11-18 19:44:10,297 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2022-11-18 19:44:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_INT~TO~C_INT [2022-11-18 19:44:10,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_INT~TO~C_INT [2022-11-18 19:44:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2022-11-18 19:44:10,298 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2022-11-18 19:44:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-18 19:44:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-18 19:44:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-18 19:44:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:44:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-18 19:44:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-18 19:44:10,299 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-18 19:44:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 19:44:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-18 19:44:10,300 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-18 19:44:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2022-11-18 19:44:10,300 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2022-11-18 19:44:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-18 19:44:10,300 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-18 19:44:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 19:44:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-18 19:44:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-18 19:44:10,301 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-18 19:44:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-18 19:44:10,301 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-18 19:44:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-18 19:44:10,302 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-18 19:44:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-18 19:44:10,302 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-18 19:44:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-18 19:44:10,302 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-18 19:44:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-18 19:44:10,303 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-18 19:44:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-18 19:44:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-18 19:44:10,303 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-18 19:44:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-18 19:44:10,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-18 19:44:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-18 19:44:10,304 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-18 19:44:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-18 19:44:10,304 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-18 19:44:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:44:10,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:44:10,305 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2022-11-18 19:44:10,305 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2022-11-18 19:44:10,305 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-18 19:44:10,305 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-18 19:44:10,961 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:44:10,969 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:44:31,131 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:44:31,146 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:44:31,146 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 19:44:31,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:44:31 BoogieIcfgContainer [2022-11-18 19:44:31,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:44:31,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:44:31,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:44:31,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:44:31,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:44:07" (1/3) ... [2022-11-18 19:44:31,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5890ce84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:44:31, skipping insertion in model container [2022-11-18 19:44:31,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:09" (2/3) ... [2022-11-18 19:44:31,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5890ce84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:44:31, skipping insertion in model container [2022-11-18 19:44:31,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:44:31" (3/3) ... [2022-11-18 19:44:31,158 INFO L112 eAbstractionObserver]: Analyzing ICFG m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-11-18 19:44:31,176 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:44:31,176 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:44:31,245 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:44:31,252 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;@5dccb04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:44:31,252 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:44:31,259 INFO L276 IsEmpty]: Start isEmpty. Operand has 961 states, 709 states have (on average 1.4287729196050776) internal successors, (1013), 736 states have internal predecessors, (1013), 207 states have call successors, (207), 43 states have call predecessors, (207), 43 states have return successors, (207), 205 states have call predecessors, (207), 207 states have call successors, (207) [2022-11-18 19:44:31,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-18 19:44:31,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:44:31,276 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:44:31,276 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:44:31,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:44:31,282 INFO L85 PathProgramCache]: Analyzing trace with hash -409076956, now seen corresponding path program 1 times [2022-11-18 19:44:31,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:44:31,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532075949] [2022-11-18 19:44:31,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:31,296 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:44:31,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:44:31,303 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:44:31,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-18 19:44:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:31,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:44:31,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:44:32,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:44:32,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:44:32,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:44:32,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532075949] [2022-11-18 19:44:32,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532075949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:44:32,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:44:32,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:44:32,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913512339] [2022-11-18 19:44:32,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:44:32,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:44:32,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:44:32,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:44:32,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:44:32,133 INFO L87 Difference]: Start difference. First operand has 961 states, 709 states have (on average 1.4287729196050776) internal successors, (1013), 736 states have internal predecessors, (1013), 207 states have call successors, (207), 43 states have call predecessors, (207), 43 states have return successors, (207), 205 states have call predecessors, (207), 207 states have call successors, (207) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:44:32,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:44:32,415 INFO L93 Difference]: Finished difference Result 1918 states and 2864 transitions. [2022-11-18 19:44:32,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:44:32,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-11-18 19:44:32,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:44:32,435 INFO L225 Difference]: With dead ends: 1918 [2022-11-18 19:44:32,435 INFO L226 Difference]: Without dead ends: 922 [2022-11-18 19:44:32,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:44:32,448 INFO L413 NwaCegarLoop]: 1411 mSDtfsCounter, 1405 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1405 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:44:32,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1405 Valid, 1411 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:44:32,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2022-11-18 19:44:32,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 922. [2022-11-18 19:44:32,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 679 states have (on average 1.4182621502209132) internal successors, (963), 703 states have internal predecessors, (963), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-11-18 19:44:32,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1361 transitions. [2022-11-18 19:44:32,618 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1361 transitions. Word has length 59 [2022-11-18 19:44:32,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:44:32,620 INFO L495 AbstractCegarLoop]: Abstraction has 922 states and 1361 transitions. [2022-11-18 19:44:32,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:44:32,621 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1361 transitions. [2022-11-18 19:44:32,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-18 19:44:32,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:44:32,632 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:44:32,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:44:32,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:44:32,848 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:44:32,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:44:32,849 INFO L85 PathProgramCache]: Analyzing trace with hash 14569766, now seen corresponding path program 1 times [2022-11-18 19:44:32,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:44:32,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786194584] [2022-11-18 19:44:32,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:32,851 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:44:32,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:44:32,852 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:44:32,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-18 19:44:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:33,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:44:33,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:44:33,395 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:44:33,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:44:33,396 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:44:33,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786194584] [2022-11-18 19:44:33,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [786194584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:44:33,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:44:33,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:44:33,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456297933] [2022-11-18 19:44:33,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:44:33,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:44:33,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:44:33,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:44:33,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:44:33,400 INFO L87 Difference]: Start difference. First operand 922 states and 1361 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:44:33,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:44:33,545 INFO L93 Difference]: Finished difference Result 1827 states and 2699 transitions. [2022-11-18 19:44:33,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:44:33,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-11-18 19:44:33,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:44:33,552 INFO L225 Difference]: With dead ends: 1827 [2022-11-18 19:44:33,553 INFO L226 Difference]: Without dead ends: 922 [2022-11-18 19:44:33,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:44:33,557 INFO L413 NwaCegarLoop]: 1360 mSDtfsCounter, 1 mSDsluCounter, 2715 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4075 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:44:33,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4075 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:44:33,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2022-11-18 19:44:33,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 922. [2022-11-18 19:44:33,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 679 states have (on average 1.4167893961708395) internal successors, (962), 703 states have internal predecessors, (962), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-11-18 19:44:33,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1360 transitions. [2022-11-18 19:44:33,616 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1360 transitions. Word has length 59 [2022-11-18 19:44:33,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:44:33,616 INFO L495 AbstractCegarLoop]: Abstraction has 922 states and 1360 transitions. [2022-11-18 19:44:33,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:44:33,617 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1360 transitions. [2022-11-18 19:44:33,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-18 19:44:33,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:44:33,619 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:44:33,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:44:33,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:44:33,840 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:44:33,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:44:33,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1156177197, now seen corresponding path program 1 times [2022-11-18 19:44:33,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:44:33,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1562271216] [2022-11-18 19:44:33,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:33,842 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:44:33,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:44:33,843 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:44:33,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-18 19:44:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:34,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 19:44:34,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:44:34,761 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:44:34,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:44:34,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:44:34,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1562271216] [2022-11-18 19:44:34,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1562271216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:44:34,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:44:34,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:44:34,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178171433] [2022-11-18 19:44:34,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:44:34,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:44:34,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:44:34,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:44:34,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:44:34,766 INFO L87 Difference]: Start difference. First operand 922 states and 1360 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:44:36,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:44:36,044 INFO L93 Difference]: Finished difference Result 1866 states and 2747 transitions. [2022-11-18 19:44:36,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:44:36,045 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 62 [2022-11-18 19:44:36,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:44:36,050 INFO L225 Difference]: With dead ends: 1866 [2022-11-18 19:44:36,051 INFO L226 Difference]: Without dead ends: 950 [2022-11-18 19:44:36,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:44:36,055 INFO L413 NwaCegarLoop]: 1362 mSDtfsCounter, 42 mSDsluCounter, 9484 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 10846 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:44:36,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 10846 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:44:36,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2022-11-18 19:44:36,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 944. [2022-11-18 19:44:36,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 694 states have (on average 1.4092219020172911) internal successors, (978), 719 states have internal predecessors, (978), 201 states have call successors, (201), 47 states have call predecessors, (201), 48 states have return successors, (202), 199 states have call predecessors, (202), 201 states have call successors, (202) [2022-11-18 19:44:36,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1381 transitions. [2022-11-18 19:44:36,109 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1381 transitions. Word has length 62 [2022-11-18 19:44:36,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:44:36,109 INFO L495 AbstractCegarLoop]: Abstraction has 944 states and 1381 transitions. [2022-11-18 19:44:36,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:44:36,110 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1381 transitions. [2022-11-18 19:44:36,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 19:44:36,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:44:36,112 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:44:36,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:44:36,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:44:36,327 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:44:36,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:44:36,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1594030711, now seen corresponding path program 1 times [2022-11-18 19:44:36,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:44:36,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078908667] [2022-11-18 19:44:36,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:36,329 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:44:36,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:44:36,331 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:44:36,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-18 19:44:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:36,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:44:36,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:44:36,852 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:44:36,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:44:36,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:44:36,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078908667] [2022-11-18 19:44:36,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1078908667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:44:36,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:44:36,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:44:36,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181879568] [2022-11-18 19:44:36,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:44:36,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:44:36,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:44:36,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:44:36,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:44:36,855 INFO L87 Difference]: Start difference. First operand 944 states and 1381 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 19:44:37,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:44:37,574 INFO L93 Difference]: Finished difference Result 1455 states and 2196 transitions. [2022-11-18 19:44:37,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:44:37,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 65 [2022-11-18 19:44:37,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:44:37,582 INFO L225 Difference]: With dead ends: 1455 [2022-11-18 19:44:37,583 INFO L226 Difference]: Without dead ends: 1453 [2022-11-18 19:44:37,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:44:37,585 INFO L413 NwaCegarLoop]: 2163 mSDtfsCounter, 915 mSDsluCounter, 3165 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 5328 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:44:37,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 5328 Invalid, 231 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [214 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:44:37,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2022-11-18 19:44:37,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 946. [2022-11-18 19:44:37,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 696 states have (on average 1.4080459770114941) internal successors, (980), 721 states have internal predecessors, (980), 201 states have call successors, (201), 47 states have call predecessors, (201), 48 states have return successors, (202), 199 states have call predecessors, (202), 201 states have call successors, (202) [2022-11-18 19:44:37,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1383 transitions. [2022-11-18 19:44:37,672 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1383 transitions. Word has length 65 [2022-11-18 19:44:37,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:44:37,672 INFO L495 AbstractCegarLoop]: Abstraction has 946 states and 1383 transitions. [2022-11-18 19:44:37,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 19:44:37,673 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1383 transitions. [2022-11-18 19:44:37,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 19:44:37,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:44:37,674 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:44:37,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:44:37,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:44:37,890 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:44:37,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:44:37,891 INFO L85 PathProgramCache]: Analyzing trace with hash -2133834646, now seen corresponding path program 1 times [2022-11-18 19:44:37,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:44:37,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565072586] [2022-11-18 19:44:37,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:37,892 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:44:37,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:44:37,893 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:44:37,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-18 19:44:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:38,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:44:38,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:44:38,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:44:38,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:44:38,371 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:44:38,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565072586] [2022-11-18 19:44:38,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565072586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:44:38,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:44:38,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:44:38,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447134514] [2022-11-18 19:44:38,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:44:38,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:44:38,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:44:38,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:44:38,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:44:38,374 INFO L87 Difference]: Start difference. First operand 946 states and 1383 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 19:44:39,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:44:39,120 INFO L93 Difference]: Finished difference Result 1458 states and 2199 transitions. [2022-11-18 19:44:39,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:44:39,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 66 [2022-11-18 19:44:39,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:44:39,128 INFO L225 Difference]: With dead ends: 1458 [2022-11-18 19:44:39,129 INFO L226 Difference]: Without dead ends: 1456 [2022-11-18 19:44:39,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:44:39,130 INFO L413 NwaCegarLoop]: 2169 mSDtfsCounter, 915 mSDsluCounter, 3167 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 5336 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:44:39,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 5336 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:44:39,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2022-11-18 19:44:39,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 946. [2022-11-18 19:44:39,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 696 states have (on average 1.4080459770114941) internal successors, (980), 721 states have internal predecessors, (980), 201 states have call successors, (201), 47 states have call predecessors, (201), 48 states have return successors, (202), 199 states have call predecessors, (202), 201 states have call successors, (202) [2022-11-18 19:44:39,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1383 transitions. [2022-11-18 19:44:39,238 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1383 transitions. Word has length 66 [2022-11-18 19:44:39,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:44:39,239 INFO L495 AbstractCegarLoop]: Abstraction has 946 states and 1383 transitions. [2022-11-18 19:44:39,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 19:44:39,239 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1383 transitions. [2022-11-18 19:44:39,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-18 19:44:39,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:44:39,242 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:44:39,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:44:39,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:44:39,457 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:44:39,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:44:39,458 INFO L85 PathProgramCache]: Analyzing trace with hash -2126255121, now seen corresponding path program 1 times [2022-11-18 19:44:39,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:44:39,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638005504] [2022-11-18 19:44:39,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:39,460 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:44:39,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:44:39,461 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:44:39,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-18 19:44:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:39,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:44:39,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:44:40,214 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:44:40,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:44:40,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:44:40,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638005504] [2022-11-18 19:44:40,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [638005504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:44:40,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:44:40,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:44:40,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871983186] [2022-11-18 19:44:40,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:44:40,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:44:40,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:44:40,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:44:40,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:44:40,216 INFO L87 Difference]: Start difference. First operand 946 states and 1383 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:44:43,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:44:43,713 INFO L93 Difference]: Finished difference Result 2362 states and 3536 transitions. [2022-11-18 19:44:43,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:44:43,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 75 [2022-11-18 19:44:43,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:44:43,722 INFO L225 Difference]: With dead ends: 2362 [2022-11-18 19:44:43,725 INFO L226 Difference]: Without dead ends: 1457 [2022-11-18 19:44:43,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:44:43,734 INFO L413 NwaCegarLoop]: 1845 mSDtfsCounter, 1835 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1973 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:44:43,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1973 Valid, 2795 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-18 19:44:43,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2022-11-18 19:44:43,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 947. [2022-11-18 19:44:43,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 697 states have (on average 1.4074605451936872) internal successors, (981), 722 states have internal predecessors, (981), 201 states have call successors, (201), 47 states have call predecessors, (201), 48 states have return successors, (202), 199 states have call predecessors, (202), 201 states have call successors, (202) [2022-11-18 19:44:43,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1384 transitions. [2022-11-18 19:44:43,858 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1384 transitions. Word has length 75 [2022-11-18 19:44:43,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:44:43,859 INFO L495 AbstractCegarLoop]: Abstraction has 947 states and 1384 transitions. [2022-11-18 19:44:43,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:44:43,859 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1384 transitions. [2022-11-18 19:44:43,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-18 19:44:43,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:44:43,862 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:44:43,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:44:44,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:44:44,085 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:44:44,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:44:44,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1326022320, now seen corresponding path program 1 times [2022-11-18 19:44:44,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:44:44,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094573000] [2022-11-18 19:44:44,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:44,086 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:44:44,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:44:44,087 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:44:44,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-18 19:44:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:44,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:44:44,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:44:44,545 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:44:44,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:44:44,546 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:44:44,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1094573000] [2022-11-18 19:44:44,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1094573000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:44:44,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:44:44,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:44:44,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462478295] [2022-11-18 19:44:44,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:44:44,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:44:44,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:44:44,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:44:44,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:44:44,549 INFO L87 Difference]: Start difference. First operand 947 states and 1384 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:44:45,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:44:45,463 INFO L93 Difference]: Finished difference Result 1464 states and 2207 transitions. [2022-11-18 19:44:45,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:44:45,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 77 [2022-11-18 19:44:45,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:44:45,471 INFO L225 Difference]: With dead ends: 1464 [2022-11-18 19:44:45,472 INFO L226 Difference]: Without dead ends: 1462 [2022-11-18 19:44:45,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:44:45,473 INFO L413 NwaCegarLoop]: 2169 mSDtfsCounter, 1299 mSDsluCounter, 4827 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1330 SdHoareTripleChecker+Valid, 6996 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:44:45,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1330 Valid, 6996 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:44:45,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2022-11-18 19:44:45,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 949. [2022-11-18 19:44:45,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 698 states have (on average 1.4068767908309456) internal successors, (982), 723 states have internal predecessors, (982), 202 states have call successors, (202), 47 states have call predecessors, (202), 48 states have return successors, (203), 200 states have call predecessors, (203), 202 states have call successors, (203) [2022-11-18 19:44:45,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1387 transitions. [2022-11-18 19:44:45,641 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1387 transitions. Word has length 77 [2022-11-18 19:44:45,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:44:45,641 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1387 transitions. [2022-11-18 19:44:45,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:44:45,642 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1387 transitions. [2022-11-18 19:44:45,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-18 19:44:45,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:44:45,645 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:44:45,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:44:45,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:44:45,861 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:44:45,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:44:45,861 INFO L85 PathProgramCache]: Analyzing trace with hash 523121960, now seen corresponding path program 1 times [2022-11-18 19:44:45,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:44:45,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612423906] [2022-11-18 19:44:45,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:45,863 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:44:45,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:44:45,864 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:44:45,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-18 19:44:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:46,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:44:46,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:44:46,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:44:46,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:44:46,649 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:44:46,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612423906] [2022-11-18 19:44:46,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612423906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:44:46,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:44:46,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:44:46,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594848930] [2022-11-18 19:44:46,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:44:46,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:44:46,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:44:46,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:44:46,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:44:46,651 INFO L87 Difference]: Start difference. First operand 949 states and 1387 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 19:44:47,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:44:47,588 INFO L93 Difference]: Finished difference Result 1857 states and 2729 transitions. [2022-11-18 19:44:47,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:44:47,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 85 [2022-11-18 19:44:47,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:44:47,610 INFO L225 Difference]: With dead ends: 1857 [2022-11-18 19:44:47,611 INFO L226 Difference]: Without dead ends: 949 [2022-11-18 19:44:47,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:44:47,614 INFO L413 NwaCegarLoop]: 1364 mSDtfsCounter, 1305 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:44:47,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1305 Valid, 1396 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:44:47,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2022-11-18 19:44:47,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 949. [2022-11-18 19:44:47,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 698 states have (on average 1.4054441260744985) internal successors, (981), 723 states have internal predecessors, (981), 202 states have call successors, (202), 47 states have call predecessors, (202), 48 states have return successors, (203), 200 states have call predecessors, (203), 202 states have call successors, (203) [2022-11-18 19:44:47,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1386 transitions. [2022-11-18 19:44:47,768 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1386 transitions. Word has length 85 [2022-11-18 19:44:47,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:44:47,768 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1386 transitions. [2022-11-18 19:44:47,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 19:44:47,769 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1386 transitions. [2022-11-18 19:44:47,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-18 19:44:47,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:44:47,772 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:44:47,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:44:47,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:44:47,994 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:44:47,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:44:47,994 INFO L85 PathProgramCache]: Analyzing trace with hash 596960674, now seen corresponding path program 1 times [2022-11-18 19:44:47,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:44:47,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332099593] [2022-11-18 19:44:47,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:47,995 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:44:47,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:44:47,996 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:44:47,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-18 19:44:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:48,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:44:48,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:44:48,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:44:48,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:44:48,796 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:44:48,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332099593] [2022-11-18 19:44:48,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [332099593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:44:48,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:44:48,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:44:48,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282787315] [2022-11-18 19:44:48,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:44:48,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:44:48,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:44:48,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:44:48,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:44:48,798 INFO L87 Difference]: Start difference. First operand 949 states and 1386 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 19:44:52,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:44:54,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:44:54,353 INFO L93 Difference]: Finished difference Result 2370 states and 3544 transitions. [2022-11-18 19:44:54,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:44:54,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 87 [2022-11-18 19:44:54,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:44:54,362 INFO L225 Difference]: With dead ends: 2370 [2022-11-18 19:44:54,362 INFO L226 Difference]: Without dead ends: 1462 [2022-11-18 19:44:54,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:44:54,366 INFO L413 NwaCegarLoop]: 1913 mSDtfsCounter, 2042 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 2858 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:44:54,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2180 Valid, 2858 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-18 19:44:54,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2022-11-18 19:44:54,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 953. [2022-11-18 19:44:54,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 702 states have (on average 1.4045584045584045) internal successors, (986), 727 states have internal predecessors, (986), 202 states have call successors, (202), 47 states have call predecessors, (202), 48 states have return successors, (203), 200 states have call predecessors, (203), 202 states have call successors, (203) [2022-11-18 19:44:54,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1391 transitions. [2022-11-18 19:44:54,522 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1391 transitions. Word has length 87 [2022-11-18 19:44:54,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:44:54,523 INFO L495 AbstractCegarLoop]: Abstraction has 953 states and 1391 transitions. [2022-11-18 19:44:54,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 19:44:54,523 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1391 transitions. [2022-11-18 19:44:54,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-18 19:44:54,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:44:54,527 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:44:54,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:44:54,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:44:54,735 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:44:54,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:44:54,736 INFO L85 PathProgramCache]: Analyzing trace with hash -272015955, now seen corresponding path program 1 times [2022-11-18 19:44:54,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:44:54,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579168596] [2022-11-18 19:44:54,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:54,736 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:44:54,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:44:54,737 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:44:54,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-18 19:44:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:55,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 19:44:55,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:44:55,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 18 [2022-11-18 19:44:55,648 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 27 treesize of output 9 [2022-11-18 19:44:55,710 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:44:55,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:44:55,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:44:55,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579168596] [2022-11-18 19:44:55,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579168596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:44:55,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:44:55,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:44:55,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651829540] [2022-11-18 19:44:55,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:44:55,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:44:55,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:44:55,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:44:55,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:44:55,713 INFO L87 Difference]: Start difference. First operand 953 states and 1391 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 19:44:57,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:44:59,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:06,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:07,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:08,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:10,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:11,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:23,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:25,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:27,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:34,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:40,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:43,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:53,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:55,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:56,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:57,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:59,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:46:05,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:46:07,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:46:09,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:46:12,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:46:15,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:46:16,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:46:17,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:46:34,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:46:45,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:46:48,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:46:50,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:46:51,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:46:54,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:46:56,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:46:58,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:47:01,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:47:14,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:47:17,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:47:22,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:47:23,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:47:28,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:47:30,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:47:32,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:47:34,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:47:40,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:47:42,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:47:44,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:47:52,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:47:54,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:47:55,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:47:58,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:48:03,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:48:05,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:48:07,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:48:09,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:48:15,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:48:17,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:48:19,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:48:21,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:48:23,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:48:25,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:48:27,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:48:29,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:48:31,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:48:34,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:48:36,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:48:37,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:48:37,552 INFO L93 Difference]: Finished difference Result 6176 states and 9631 transitions. [2022-11-18 19:48:37,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:48:37,554 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 90 [2022-11-18 19:48:37,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:48:37,589 INFO L225 Difference]: With dead ends: 6176 [2022-11-18 19:48:37,589 INFO L226 Difference]: Without dead ends: 5264 [2022-11-18 19:48:37,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2022-11-18 19:48:37,596 INFO L413 NwaCegarLoop]: 3216 mSDtfsCounter, 5346 mSDsluCounter, 21024 mSDsCounter, 0 mSdLazyCounter, 5300 mSolverCounterSat, 1978 mSolverCounterUnsat, 34 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 212.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5693 SdHoareTripleChecker+Valid, 24240 SdHoareTripleChecker+Invalid, 7312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1978 IncrementalHoareTripleChecker+Valid, 5300 IncrementalHoareTripleChecker+Invalid, 34 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 219.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:48:37,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5693 Valid, 24240 Invalid, 7312 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1978 Valid, 5300 Invalid, 34 Unknown, 0 Unchecked, 219.1s Time] [2022-11-18 19:48:37,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5264 states. [2022-11-18 19:48:38,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5264 to 1591. [2022-11-18 19:48:38,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1591 states, 1178 states have (on average 1.4185059422750423) internal successors, (1671), 1217 states have internal predecessors, (1671), 327 states have call successors, (327), 84 states have call predecessors, (327), 85 states have return successors, (338), 317 states have call predecessors, (338), 327 states have call successors, (338) [2022-11-18 19:48:38,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 2336 transitions. [2022-11-18 19:48:38,144 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 2336 transitions. Word has length 90 [2022-11-18 19:48:38,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:48:38,145 INFO L495 AbstractCegarLoop]: Abstraction has 1591 states and 2336 transitions. [2022-11-18 19:48:38,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 19:48:38,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 2336 transitions. [2022-11-18 19:48:38,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-18 19:48:38,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:48:38,153 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:38,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:48:38,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:48:38,376 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:48:38,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:38,377 INFO L85 PathProgramCache]: Analyzing trace with hash -875753156, now seen corresponding path program 1 times [2022-11-18 19:48:38,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:48:38,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060797768] [2022-11-18 19:48:38,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:38,378 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:48:38,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:48:38,379 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:48:38,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-18 19:48:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:38,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:48:38,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:48:39,031 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 19:48:39,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:48:39,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:48:39,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060797768] [2022-11-18 19:48:39,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060797768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:39,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:39,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:48:39,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702400653] [2022-11-18 19:48:39,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:39,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:48:39,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:48:39,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:48:39,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:48:39,033 INFO L87 Difference]: Start difference. First operand 1591 states and 2336 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 19:48:40,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:48:40,731 INFO L93 Difference]: Finished difference Result 2828 states and 4316 transitions. [2022-11-18 19:48:40,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:48:40,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 99 [2022-11-18 19:48:40,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:48:40,748 INFO L225 Difference]: With dead ends: 2828 [2022-11-18 19:48:40,749 INFO L226 Difference]: Without dead ends: 2826 [2022-11-18 19:48:40,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:48:40,753 INFO L413 NwaCegarLoop]: 2285 mSDtfsCounter, 1789 mSDsluCounter, 5556 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1928 SdHoareTripleChecker+Valid, 7841 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:48:40,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1928 Valid, 7841 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:48:40,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2022-11-18 19:48:41,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 1587. [2022-11-18 19:48:41,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1587 states, 1175 states have (on average 1.4187234042553192) internal successors, (1667), 1213 states have internal predecessors, (1667), 326 states have call successors, (326), 84 states have call predecessors, (326), 85 states have return successors, (337), 316 states have call predecessors, (337), 326 states have call successors, (337) [2022-11-18 19:48:41,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 2330 transitions. [2022-11-18 19:48:41,313 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 2330 transitions. Word has length 99 [2022-11-18 19:48:41,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:48:41,314 INFO L495 AbstractCegarLoop]: Abstraction has 1587 states and 2330 transitions. [2022-11-18 19:48:41,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 19:48:41,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 2330 transitions. [2022-11-18 19:48:41,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-18 19:48:41,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:48:41,327 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:41,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:48:41,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:48:41,548 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:48:41,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:41,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1938229159, now seen corresponding path program 1 times [2022-11-18 19:48:41,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:48:41,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060098273] [2022-11-18 19:48:41,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:41,549 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:48:41,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:48:41,550 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:48:41,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-18 19:48:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:42,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:48:42,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:48:42,266 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 19:48:42,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:48:42,266 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:48:42,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060098273] [2022-11-18 19:48:42,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060098273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:42,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:42,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:48:42,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223451434] [2022-11-18 19:48:42,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:42,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:48:42,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:48:42,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:48:42,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:48:42,269 INFO L87 Difference]: Start difference. First operand 1587 states and 2330 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:48:45,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:48:45,093 INFO L93 Difference]: Finished difference Result 4499 states and 6831 transitions. [2022-11-18 19:48:45,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:48:45,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 121 [2022-11-18 19:48:45,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:48:45,105 INFO L225 Difference]: With dead ends: 4499 [2022-11-18 19:48:45,106 INFO L226 Difference]: Without dead ends: 2953 [2022-11-18 19:48:45,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:48:45,111 INFO L413 NwaCegarLoop]: 2094 mSDtfsCounter, 1176 mSDsluCounter, 3427 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1286 SdHoareTripleChecker+Valid, 5521 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:48:45,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1286 Valid, 5521 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-18 19:48:45,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2022-11-18 19:48:45,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1589. [2022-11-18 19:48:45,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1177 states have (on average 1.4171622769753611) internal successors, (1668), 1215 states have internal predecessors, (1668), 326 states have call successors, (326), 84 states have call predecessors, (326), 85 states have return successors, (337), 316 states have call predecessors, (337), 326 states have call successors, (337) [2022-11-18 19:48:45,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2331 transitions. [2022-11-18 19:48:45,671 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2331 transitions. Word has length 121 [2022-11-18 19:48:45,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:48:45,671 INFO L495 AbstractCegarLoop]: Abstraction has 1589 states and 2331 transitions. [2022-11-18 19:48:45,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:48:45,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2331 transitions. [2022-11-18 19:48:45,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-18 19:48:45,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:48:45,680 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:45,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:48:45,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:48:45,895 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:48:45,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:45,896 INFO L85 PathProgramCache]: Analyzing trace with hash -575832018, now seen corresponding path program 1 times [2022-11-18 19:48:45,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:48:45,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65478650] [2022-11-18 19:48:45,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:45,897 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:48:45,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:48:45,899 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:48:45,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-18 19:48:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:46,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:48:46,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:48:46,992 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 19:48:46,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:48:46,993 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:48:46,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65478650] [2022-11-18 19:48:46,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65478650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:46,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:46,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:48:46,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27032752] [2022-11-18 19:48:46,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:46,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:48:46,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:48:46,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:48:46,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:48:46,996 INFO L87 Difference]: Start difference. First operand 1589 states and 2331 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 19:48:50,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:48:50,251 INFO L93 Difference]: Finished difference Result 4687 states and 7111 transitions. [2022-11-18 19:48:50,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:48:50,252 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2022-11-18 19:48:50,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:48:50,270 INFO L225 Difference]: With dead ends: 4687 [2022-11-18 19:48:50,270 INFO L226 Difference]: Without dead ends: 3139 [2022-11-18 19:48:50,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:48:50,276 INFO L413 NwaCegarLoop]: 2273 mSDtfsCounter, 1362 mSDsluCounter, 8165 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 10438 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:48:50,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 10438 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 19:48:50,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2022-11-18 19:48:50,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 1599. [2022-11-18 19:48:50,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1185 states have (on average 1.4143459915611813) internal successors, (1676), 1223 states have internal predecessors, (1676), 326 states have call successors, (326), 84 states have call predecessors, (326), 87 states have return successors, (343), 318 states have call predecessors, (343), 326 states have call successors, (343) [2022-11-18 19:48:50,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 2345 transitions. [2022-11-18 19:48:50,906 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 2345 transitions. Word has length 138 [2022-11-18 19:48:50,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:48:50,906 INFO L495 AbstractCegarLoop]: Abstraction has 1599 states and 2345 transitions. [2022-11-18 19:48:50,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 19:48:50,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 2345 transitions. [2022-11-18 19:48:50,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-18 19:48:50,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:48:50,914 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:50,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-11-18 19:48:51,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:48:51,132 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:48:51,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:51,133 INFO L85 PathProgramCache]: Analyzing trace with hash -285051848, now seen corresponding path program 2 times [2022-11-18 19:48:51,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:48:51,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1389249829] [2022-11-18 19:48:51,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:48:51,134 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:48:51,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:48:51,135 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:48:51,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-18 19:48:51,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:48:51,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:48:51,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:48:51,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:48:51,828 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 19:48:51,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:48:51,828 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:48:51,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1389249829] [2022-11-18 19:48:51,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1389249829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:51,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:51,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:48:51,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427502896] [2022-11-18 19:48:51,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:51,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:48:51,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:48:51,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:48:51,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:48:51,832 INFO L87 Difference]: Start difference. First operand 1599 states and 2345 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 19:48:52,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:48:52,323 INFO L93 Difference]: Finished difference Result 3159 states and 4663 transitions. [2022-11-18 19:48:52,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:48:52,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2022-11-18 19:48:52,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:48:52,332 INFO L225 Difference]: With dead ends: 3159 [2022-11-18 19:48:52,332 INFO L226 Difference]: Without dead ends: 1601 [2022-11-18 19:48:52,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:48:52,337 INFO L413 NwaCegarLoop]: 1354 mSDtfsCounter, 0 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:48:52,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2701 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:48:52,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2022-11-18 19:48:52,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1599. [2022-11-18 19:48:52,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1185 states have (on average 1.409282700421941) internal successors, (1670), 1223 states have internal predecessors, (1670), 326 states have call successors, (326), 84 states have call predecessors, (326), 87 states have return successors, (343), 318 states have call predecessors, (343), 326 states have call successors, (343) [2022-11-18 19:48:52,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 2339 transitions. [2022-11-18 19:48:52,773 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 2339 transitions. Word has length 141 [2022-11-18 19:48:52,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:48:52,774 INFO L495 AbstractCegarLoop]: Abstraction has 1599 states and 2339 transitions. [2022-11-18 19:48:52,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 19:48:52,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 2339 transitions. [2022-11-18 19:48:52,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-18 19:48:52,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:48:52,782 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:52,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-18 19:48:52,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:48:52,995 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:48:52,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:52,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1782033489, now seen corresponding path program 1 times [2022-11-18 19:48:52,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:48:52,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [103624397] [2022-11-18 19:48:52,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:52,997 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:48:52,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:48:52,998 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:48:53,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1673cc29-8191-4eb2-a9c0-4cc1700fc298/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-18 19:48:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:59,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 145 conjunts are in the unsatisfiable core [2022-11-18 19:48:59,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:48:59,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 19:49:01,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:01,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:01,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:02,346 INFO L321 Elim1Store]: treesize reduction 127, result has 20.6 percent of original size [2022-11-18 19:49:02,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 48 [2022-11-18 19:49:03,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:03,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 19:49:04,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:04,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:04,577 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:49:04,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2022-11-18 19:49:05,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:49:05,487 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:49:05,488 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:49:05,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 29 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 81 [2022-11-18 19:49:08,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:08,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:08,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:08,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:08,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:08,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:08,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:08,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:08,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 37 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 100 [2022-11-18 19:49:08,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:49:08,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 19:49:09,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:49:09,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 66 [2022-11-18 19:49:09,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:49:11,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 79 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 138 [2022-11-18 19:49:11,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 46 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 94 [2022-11-18 19:49:11,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 46 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 96 [2022-11-18 19:49:13,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 79 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 118 [2022-11-18 19:49:13,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 46 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 80 [2022-11-18 19:49:13,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 46 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 80 [2022-11-18 19:49:13,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-18 19:49:13,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-18 19:49:13,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21