./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e559d44f6ee539bed570b1939999945f6f48ca1506c283f526f35c026a08bf8f --- 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-5e519f3 [2022-11-02 20:31:08,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:31:08,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:31:08,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:31:08,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:31:08,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:31:08,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:31:08,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:31:08,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:31:08,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:31:08,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:31:08,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:31:08,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:31:08,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:31:08,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:31:08,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:31:08,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:31:08,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:31:08,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:31:08,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:31:08,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:31:08,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:31:08,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:31:08,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:31:08,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:31:08,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:31:08,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:31:08,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:31:08,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:31:08,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:31:08,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:31:08,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:31:08,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:31:08,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:31:08,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:31:08,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:31:08,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:31:08,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:31:08,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:31:08,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:31:08,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:31:08,598 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:31:08,619 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:31:08,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:31:08,620 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:31:08,620 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:31:08,621 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:31:08,621 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:31:08,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:31:08,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:31:08,623 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:31:08,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:31:08,624 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:31:08,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:31:08,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:31:08,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:31:08,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:31:08,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:31:08,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:31:08,626 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:31:08,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:31:08,626 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:31:08,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:31:08,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:31:08,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:31:08,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:31:08,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:31:08,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:31:08,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:31:08,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:31:08,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:31:08,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:31:08,639 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:31:08,639 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:31:08,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:31:08,640 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_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e559d44f6ee539bed570b1939999945f6f48ca1506c283f526f35c026a08bf8f [2022-11-02 20:31:08,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:31:08,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:31:08,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:31:08,946 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:31:08,947 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:31:08,948 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c [2022-11-02 20:31:09,020 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/data/30b5c7c3b/da5e73bbfafe4e9ca62c60109e381d87/FLAGa697de92d [2022-11-02 20:31:09,596 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:31:09,597 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c [2022-11-02 20:31:09,622 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/data/30b5c7c3b/da5e73bbfafe4e9ca62c60109e381d87/FLAGa697de92d [2022-11-02 20:31:09,874 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/data/30b5c7c3b/da5e73bbfafe4e9ca62c60109e381d87 [2022-11-02 20:31:09,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:31:09,878 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:31:09,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:31:09,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:31:09,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:31:09,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:31:09" (1/1) ... [2022-11-02 20:31:09,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35950f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:09, skipping insertion in model container [2022-11-02 20:31:09,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:31:09" (1/1) ... [2022-11-02 20:31:09,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:31:09,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:31:10,443 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c[75833,75846] [2022-11-02 20:31:10,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:31:10,511 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:31:10,625 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c[75833,75846] [2022-11-02 20:31:10,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:31:10,645 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:31:10,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:10 WrapperNode [2022-11-02 20:31:10,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:31:10,651 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:31:10,651 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:31:10,651 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:31:10,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:10" (1/1) ... [2022-11-02 20:31:10,703 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:10" (1/1) ... [2022-11-02 20:31:10,768 INFO L138 Inliner]: procedures = 31, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 800 [2022-11-02 20:31:10,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:31:10,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:31:10,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:31:10,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:31:10,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:10" (1/1) ... [2022-11-02 20:31:10,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:10" (1/1) ... [2022-11-02 20:31:10,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:10" (1/1) ... [2022-11-02 20:31:10,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:10" (1/1) ... [2022-11-02 20:31:10,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:10" (1/1) ... [2022-11-02 20:31:10,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:10" (1/1) ... [2022-11-02 20:31:10,895 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:10" (1/1) ... [2022-11-02 20:31:10,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:10" (1/1) ... [2022-11-02 20:31:10,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:31:10,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:31:10,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:31:10,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:31:10,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:10" (1/1) ... [2022-11-02 20:31:10,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:31:10,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:31:10,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:31:10,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:31:11,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:31:11,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:31:11,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:31:11,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:31:11,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:31:11,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:31:11,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:31:11,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:31:11,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:31:11,263 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:31:11,266 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:31:11,310 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-02 20:31:12,993 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-11-02 20:31:12,994 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-11-02 20:31:12,994 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:31:13,002 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:31:13,003 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:31:13,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:31:13 BoogieIcfgContainer [2022-11-02 20:31:13,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:31:13,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:31:13,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:31:13,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:31:13,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:31:09" (1/3) ... [2022-11-02 20:31:13,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26853908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:31:13, skipping insertion in model container [2022-11-02 20:31:13,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:10" (2/3) ... [2022-11-02 20:31:13,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26853908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:31:13, skipping insertion in model container [2022-11-02 20:31:13,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:31:13" (3/3) ... [2022-11-02 20:31:13,017 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.15.i.cil-2.c [2022-11-02 20:31:13,041 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:31:13,042 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:31:13,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:31:13,123 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;@3e54d17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:31:13,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:31:13,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 154 states, 152 states have (on average 1.7236842105263157) internal successors, (262), 153 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:13,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-02 20:31:13,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:13,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:31:13,146 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:13,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:13,155 INFO L85 PathProgramCache]: Analyzing trace with hash 983008807, now seen corresponding path program 1 times [2022-11-02 20:31:13,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:13,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120673987] [2022-11-02 20:31:13,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:13,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:14,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:31:14,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:14,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120673987] [2022-11-02 20:31:14,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120673987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:14,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:14,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:31:14,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291740116] [2022-11-02 20:31:14,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:14,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:14,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:14,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:14,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:31:14,423 INFO L87 Difference]: Start difference. First operand has 154 states, 152 states have (on average 1.7236842105263157) internal successors, (262), 153 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:15,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:15,851 INFO L93 Difference]: Finished difference Result 431 states and 736 transitions. [2022-11-02 20:31:15,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:31:15,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-11-02 20:31:15,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:15,874 INFO L225 Difference]: With dead ends: 431 [2022-11-02 20:31:15,874 INFO L226 Difference]: Without dead ends: 262 [2022-11-02 20:31:15,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:31:15,885 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 160 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:15,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 465 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 20:31:15,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-11-02 20:31:15,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 181. [2022-11-02 20:31:15,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.6166666666666667) internal successors, (291), 180 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:15,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 291 transitions. [2022-11-02 20:31:15,962 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 291 transitions. Word has length 46 [2022-11-02 20:31:15,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:15,963 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 291 transitions. [2022-11-02 20:31:15,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:15,963 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 291 transitions. [2022-11-02 20:31:15,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-02 20:31:15,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:15,966 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:31:15,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:31:15,967 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:15,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:15,968 INFO L85 PathProgramCache]: Analyzing trace with hash -829195320, now seen corresponding path program 1 times [2022-11-02 20:31:15,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:15,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530058496] [2022-11-02 20:31:15,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:15,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:16,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:31:16,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:16,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530058496] [2022-11-02 20:31:16,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530058496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:16,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:16,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:31:16,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411136880] [2022-11-02 20:31:16,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:16,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:16,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:16,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:16,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:31:16,478 INFO L87 Difference]: Start difference. First operand 181 states and 291 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:17,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:31:18,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:18,163 INFO L93 Difference]: Finished difference Result 380 states and 609 transitions. [2022-11-02 20:31:18,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:31:18,164 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-11-02 20:31:18,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:18,166 INFO L225 Difference]: With dead ends: 380 [2022-11-02 20:31:18,166 INFO L226 Difference]: Without dead ends: 209 [2022-11-02 20:31:18,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:31:18,169 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 22 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:18,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 493 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-02 20:31:18,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-02 20:31:18,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 192. [2022-11-02 20:31:18,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.6230366492146597) internal successors, (310), 191 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:18,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 310 transitions. [2022-11-02 20:31:18,185 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 310 transitions. Word has length 47 [2022-11-02 20:31:18,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:18,186 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 310 transitions. [2022-11-02 20:31:18,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:18,187 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 310 transitions. [2022-11-02 20:31:18,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-02 20:31:18,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:18,189 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:31:18,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:31:18,190 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:18,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:18,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1049124123, now seen corresponding path program 1 times [2022-11-02 20:31:18,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:18,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237886375] [2022-11-02 20:31:18,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:18,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:18,760 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:31:18,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:18,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237886375] [2022-11-02 20:31:18,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237886375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:18,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:18,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:31:18,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600853728] [2022-11-02 20:31:18,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:18,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:18,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:18,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:18,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:31:18,767 INFO L87 Difference]: Start difference. First operand 192 states and 310 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:19,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:19,873 INFO L93 Difference]: Finished difference Result 522 states and 847 transitions. [2022-11-02 20:31:19,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:31:19,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-11-02 20:31:19,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:19,881 INFO L225 Difference]: With dead ends: 522 [2022-11-02 20:31:19,881 INFO L226 Difference]: Without dead ends: 351 [2022-11-02 20:31:19,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:31:19,886 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 149 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:19,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 650 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 20:31:19,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-11-02 20:31:19,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 224. [2022-11-02 20:31:19,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.6188340807174888) internal successors, (361), 223 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:19,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 361 transitions. [2022-11-02 20:31:19,925 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 361 transitions. Word has length 60 [2022-11-02 20:31:19,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:19,926 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 361 transitions. [2022-11-02 20:31:19,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:19,930 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 361 transitions. [2022-11-02 20:31:19,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-02 20:31:19,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:19,937 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:31:19,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:31:19,937 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:19,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:19,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1463598922, now seen corresponding path program 1 times [2022-11-02 20:31:19,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:19,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687900396] [2022-11-02 20:31:19,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:19,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:20,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:31:20,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:20,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687900396] [2022-11-02 20:31:20,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687900396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:20,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:20,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:31:20,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765727315] [2022-11-02 20:31:20,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:20,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:20,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:20,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:20,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:31:20,456 INFO L87 Difference]: Start difference. First operand 224 states and 361 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:21,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:31:22,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:22,155 INFO L93 Difference]: Finished difference Result 443 states and 710 transitions. [2022-11-02 20:31:22,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:31:22,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-02 20:31:22,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:22,158 INFO L225 Difference]: With dead ends: 443 [2022-11-02 20:31:22,158 INFO L226 Difference]: Without dead ends: 240 [2022-11-02 20:31:22,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:31:22,160 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 28 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:22,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 497 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-02 20:31:22,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-02 20:31:22,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 224. [2022-11-02 20:31:22,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.6143497757847534) internal successors, (360), 223 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:22,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 360 transitions. [2022-11-02 20:31:22,191 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 360 transitions. Word has length 61 [2022-11-02 20:31:22,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:22,193 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 360 transitions. [2022-11-02 20:31:22,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:22,194 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 360 transitions. [2022-11-02 20:31:22,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-02 20:31:22,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:22,207 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] [2022-11-02 20:31:22,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:31:22,208 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:22,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:22,209 INFO L85 PathProgramCache]: Analyzing trace with hash -625588150, now seen corresponding path program 1 times [2022-11-02 20:31:22,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:22,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187322214] [2022-11-02 20:31:22,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:22,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:22,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:31:22,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:22,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187322214] [2022-11-02 20:31:22,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187322214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:22,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:22,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:31:22,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501997619] [2022-11-02 20:31:22,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:22,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:22,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:22,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:22,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:31:22,732 INFO L87 Difference]: Start difference. First operand 224 states and 360 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:23,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:23,765 INFO L93 Difference]: Finished difference Result 443 states and 709 transitions. [2022-11-02 20:31:23,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:31:23,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-02 20:31:23,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:23,768 INFO L225 Difference]: With dead ends: 443 [2022-11-02 20:31:23,768 INFO L226 Difference]: Without dead ends: 240 [2022-11-02 20:31:23,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:31:23,770 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 26 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:23,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 497 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:31:23,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-02 20:31:23,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 224. [2022-11-02 20:31:23,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.609865470852018) internal successors, (359), 223 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:23,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 359 transitions. [2022-11-02 20:31:23,825 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 359 transitions. Word has length 61 [2022-11-02 20:31:23,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:23,827 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 359 transitions. [2022-11-02 20:31:23,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:23,833 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 359 transitions. [2022-11-02 20:31:23,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-02 20:31:23,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:23,835 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:31:23,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:31:23,835 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:23,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:23,836 INFO L85 PathProgramCache]: Analyzing trace with hash 828942689, now seen corresponding path program 1 times [2022-11-02 20:31:23,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:23,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975067313] [2022-11-02 20:31:23,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:23,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:24,203 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:31:24,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:24,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975067313] [2022-11-02 20:31:24,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975067313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:24,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:24,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:31:24,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140132303] [2022-11-02 20:31:24,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:24,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:24,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:24,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:24,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:31:24,206 INFO L87 Difference]: Start difference. First operand 224 states and 359 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:25,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:31:25,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:25,616 INFO L93 Difference]: Finished difference Result 442 states and 707 transitions. [2022-11-02 20:31:25,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:31:25,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-02 20:31:25,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:25,624 INFO L225 Difference]: With dead ends: 442 [2022-11-02 20:31:25,624 INFO L226 Difference]: Without dead ends: 239 [2022-11-02 20:31:25,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:31:25,626 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 19 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:25,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 499 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 20:31:25,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-02 20:31:25,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 224. [2022-11-02 20:31:25,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.6053811659192825) internal successors, (358), 223 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:25,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 358 transitions. [2022-11-02 20:31:25,638 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 358 transitions. Word has length 61 [2022-11-02 20:31:25,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:25,638 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 358 transitions. [2022-11-02 20:31:25,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:25,639 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 358 transitions. [2022-11-02 20:31:25,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-02 20:31:25,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:25,640 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] [2022-11-02 20:31:25,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:31:25,641 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:25,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:25,642 INFO L85 PathProgramCache]: Analyzing trace with hash -120405471, now seen corresponding path program 1 times [2022-11-02 20:31:25,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:25,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901784415] [2022-11-02 20:31:25,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:25,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:26,130 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:31:26,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:26,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901784415] [2022-11-02 20:31:26,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901784415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:26,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:26,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:31:26,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889889949] [2022-11-02 20:31:26,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:26,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:26,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:26,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:26,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:31:26,134 INFO L87 Difference]: Start difference. First operand 224 states and 358 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:27,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:31:27,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:27,925 INFO L93 Difference]: Finished difference Result 531 states and 848 transitions. [2022-11-02 20:31:27,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:31:27,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-02 20:31:27,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:27,928 INFO L225 Difference]: With dead ends: 531 [2022-11-02 20:31:27,928 INFO L226 Difference]: Without dead ends: 328 [2022-11-02 20:31:27,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:31:27,929 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 148 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:27,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 356 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-02 20:31:27,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-11-02 20:31:27,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 225. [2022-11-02 20:31:27,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.59375) internal successors, (357), 224 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:27,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 357 transitions. [2022-11-02 20:31:27,940 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 357 transitions. Word has length 61 [2022-11-02 20:31:27,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:27,940 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 357 transitions. [2022-11-02 20:31:27,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:27,941 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 357 transitions. [2022-11-02 20:31:27,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 20:31:27,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:27,942 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] [2022-11-02 20:31:27,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:31:27,943 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:27,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:27,944 INFO L85 PathProgramCache]: Analyzing trace with hash 2112722766, now seen corresponding path program 1 times [2022-11-02 20:31:27,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:27,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384294767] [2022-11-02 20:31:27,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:27,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:28,341 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:31:28,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:28,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384294767] [2022-11-02 20:31:28,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384294767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:28,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:28,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:31:28,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144040475] [2022-11-02 20:31:28,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:28,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:28,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:28,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:28,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:31:28,346 INFO L87 Difference]: Start difference. First operand 225 states and 357 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:30,357 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 [] [2022-11-02 20:31:30,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:30,787 INFO L93 Difference]: Finished difference Result 442 states and 703 transitions. [2022-11-02 20:31:30,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:31:30,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-02 20:31:30,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:30,793 INFO L225 Difference]: With dead ends: 442 [2022-11-02 20:31:30,793 INFO L226 Difference]: Without dead ends: 238 [2022-11-02 20:31:30,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:31:30,795 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 22 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:30,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 503 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 140 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-02 20:31:30,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-02 20:31:30,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 225. [2022-11-02 20:31:30,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.5892857142857142) internal successors, (356), 224 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:30,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 356 transitions. [2022-11-02 20:31:30,805 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 356 transitions. Word has length 62 [2022-11-02 20:31:30,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:30,806 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 356 transitions. [2022-11-02 20:31:30,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:30,806 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 356 transitions. [2022-11-02 20:31:30,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-02 20:31:30,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:30,807 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:31:30,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:31:30,807 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:30,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:30,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1062218447, now seen corresponding path program 1 times [2022-11-02 20:31:30,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:30,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024720123] [2022-11-02 20:31:30,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:30,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:31,170 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:31:31,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:31,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024720123] [2022-11-02 20:31:31,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024720123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:31,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:31,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:31:31,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806298023] [2022-11-02 20:31:31,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:31,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:31,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:31,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:31,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:31:31,176 INFO L87 Difference]: Start difference. First operand 225 states and 356 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:33,135 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 [] [2022-11-02 20:31:33,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:33,501 INFO L93 Difference]: Finished difference Result 442 states and 702 transitions. [2022-11-02 20:31:33,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:31:33,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-02 20:31:33,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:33,504 INFO L225 Difference]: With dead ends: 442 [2022-11-02 20:31:33,504 INFO L226 Difference]: Without dead ends: 238 [2022-11-02 20:31:33,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:31:33,506 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 20 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:33,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 503 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-02 20:31:33,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-02 20:31:33,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 225. [2022-11-02 20:31:33,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.5848214285714286) internal successors, (355), 224 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:33,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 355 transitions. [2022-11-02 20:31:33,518 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 355 transitions. Word has length 63 [2022-11-02 20:31:33,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:33,518 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 355 transitions. [2022-11-02 20:31:33,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:33,519 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 355 transitions. [2022-11-02 20:31:33,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-02 20:31:33,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:33,525 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] [2022-11-02 20:31:33,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:31:33,526 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:33,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:33,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1477441165, now seen corresponding path program 1 times [2022-11-02 20:31:33,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:33,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566140553] [2022-11-02 20:31:33,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:33,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:33,904 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:31:33,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:33,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566140553] [2022-11-02 20:31:33,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566140553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:33,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:33,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:31:33,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526861888] [2022-11-02 20:31:33,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:33,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:33,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:33,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:33,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:31:33,908 INFO L87 Difference]: Start difference. First operand 225 states and 355 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:34,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:34,993 INFO L93 Difference]: Finished difference Result 432 states and 688 transitions. [2022-11-02 20:31:34,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:31:34,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-02 20:31:34,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:34,998 INFO L225 Difference]: With dead ends: 432 [2022-11-02 20:31:34,998 INFO L226 Difference]: Without dead ends: 228 [2022-11-02 20:31:34,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:31:34,999 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 11 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:35,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 517 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 20:31:35,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-11-02 20:31:35,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 225. [2022-11-02 20:31:35,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.5803571428571428) internal successors, (354), 224 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:35,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 354 transitions. [2022-11-02 20:31:35,009 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 354 transitions. Word has length 64 [2022-11-02 20:31:35,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:35,009 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 354 transitions. [2022-11-02 20:31:35,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:35,010 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 354 transitions. [2022-11-02 20:31:35,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-02 20:31:35,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:35,011 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:31:35,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:31:35,011 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:35,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:35,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1077289765, now seen corresponding path program 1 times [2022-11-02 20:31:35,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:35,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098744058] [2022-11-02 20:31:35,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:35,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:35,354 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:31:35,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:35,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098744058] [2022-11-02 20:31:35,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098744058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:35,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:35,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:31:35,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539298163] [2022-11-02 20:31:35,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:35,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:35,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:35,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:35,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:31:35,359 INFO L87 Difference]: Start difference. First operand 225 states and 354 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:37,373 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 [] [2022-11-02 20:31:37,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:37,992 INFO L93 Difference]: Finished difference Result 532 states and 842 transitions. [2022-11-02 20:31:37,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:31:37,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-02 20:31:37,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:37,995 INFO L225 Difference]: With dead ends: 532 [2022-11-02 20:31:37,995 INFO L226 Difference]: Without dead ends: 328 [2022-11-02 20:31:37,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:31:37,996 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 125 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 60 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:37,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 382 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 261 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-02 20:31:37,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-11-02 20:31:38,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 248. [2022-11-02 20:31:38,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.6153846153846154) internal successors, (399), 247 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:38,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 399 transitions. [2022-11-02 20:31:38,008 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 399 transitions. Word has length 64 [2022-11-02 20:31:38,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:38,009 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 399 transitions. [2022-11-02 20:31:38,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:38,010 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 399 transitions. [2022-11-02 20:31:38,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:31:38,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:38,011 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2022-11-02 20:31:38,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:31:38,012 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:38,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:38,013 INFO L85 PathProgramCache]: Analyzing trace with hash -212151294, now seen corresponding path program 1 times [2022-11-02 20:31:38,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:38,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916274267] [2022-11-02 20:31:38,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:38,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:38,402 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:31:38,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:38,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916274267] [2022-11-02 20:31:38,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916274267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:38,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:38,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:31:38,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515810527] [2022-11-02 20:31:38,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:38,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:38,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:38,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:38,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:31:38,406 INFO L87 Difference]: Start difference. First operand 248 states and 399 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:40,441 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 [] [2022-11-02 20:31:41,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:41,043 INFO L93 Difference]: Finished difference Result 631 states and 1024 transitions. [2022-11-02 20:31:41,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:31:41,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:31:41,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:41,046 INFO L225 Difference]: With dead ends: 631 [2022-11-02 20:31:41,046 INFO L226 Difference]: Without dead ends: 404 [2022-11-02 20:31:41,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:31:41,048 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 131 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 49 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:41,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 366 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 256 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-02 20:31:41,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-11-02 20:31:41,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 312. [2022-11-02 20:31:41,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.6430868167202572) internal successors, (511), 311 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:41,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 511 transitions. [2022-11-02 20:31:41,059 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 511 transitions. Word has length 92 [2022-11-02 20:31:41,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:41,060 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 511 transitions. [2022-11-02 20:31:41,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:41,060 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 511 transitions. [2022-11-02 20:31:41,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-02 20:31:41,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:41,062 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:31:41,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:31:41,063 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:41,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:41,063 INFO L85 PathProgramCache]: Analyzing trace with hash -445450899, now seen corresponding path program 1 times [2022-11-02 20:31:41,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:41,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627210140] [2022-11-02 20:31:41,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:41,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:41,388 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:31:41,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:41,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627210140] [2022-11-02 20:31:41,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627210140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:41,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:41,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:31:41,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21532728] [2022-11-02 20:31:41,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:41,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:41,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:41,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:41,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:31:41,390 INFO L87 Difference]: Start difference. First operand 312 states and 511 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:42,567 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 [] [2022-11-02 20:31:43,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:43,147 INFO L93 Difference]: Finished difference Result 723 states and 1180 transitions. [2022-11-02 20:31:43,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:31:43,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-11-02 20:31:43,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:43,150 INFO L225 Difference]: With dead ends: 723 [2022-11-02 20:31:43,150 INFO L226 Difference]: Without dead ends: 432 [2022-11-02 20:31:43,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:31:43,152 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 127 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:43,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 354 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-02 20:31:43,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-11-02 20:31:43,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 349. [2022-11-02 20:31:43,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.6522988505747127) internal successors, (575), 348 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:43,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 575 transitions. [2022-11-02 20:31:43,167 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 575 transitions. Word has length 97 [2022-11-02 20:31:43,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:43,167 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 575 transitions. [2022-11-02 20:31:43,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:43,168 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 575 transitions. [2022-11-02 20:31:43,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:31:43,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:43,170 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:31:43,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:31:43,170 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:43,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:43,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1163497164, now seen corresponding path program 1 times [2022-11-02 20:31:43,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:43,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676199254] [2022-11-02 20:31:43,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:43,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:43,521 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 20:31:43,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:43,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676199254] [2022-11-02 20:31:43,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676199254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:43,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:43,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:31:43,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859303834] [2022-11-02 20:31:43,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:43,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:43,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:43,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:43,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:31:43,525 INFO L87 Difference]: Start difference. First operand 349 states and 575 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:44,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:44,765 INFO L93 Difference]: Finished difference Result 718 states and 1187 transitions. [2022-11-02 20:31:44,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:31:44,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 20:31:44,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:44,768 INFO L225 Difference]: With dead ends: 718 [2022-11-02 20:31:44,768 INFO L226 Difference]: Without dead ends: 390 [2022-11-02 20:31:44,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:31:44,770 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 32 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:44,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 519 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 20:31:44,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-11-02 20:31:44,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 371. [2022-11-02 20:31:44,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 1.6513513513513514) internal successors, (611), 370 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:44,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 611 transitions. [2022-11-02 20:31:44,787 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 611 transitions. Word has length 98 [2022-11-02 20:31:44,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:44,787 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 611 transitions. [2022-11-02 20:31:44,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:44,788 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 611 transitions. [2022-11-02 20:31:44,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-02 20:31:44,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:44,790 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-11-02 20:31:44,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:31:44,790 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:44,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:44,791 INFO L85 PathProgramCache]: Analyzing trace with hash 2059005282, now seen corresponding path program 1 times [2022-11-02 20:31:44,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:44,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417961497] [2022-11-02 20:31:44,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:44,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:44,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:45,231 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-02 20:31:45,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:45,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417961497] [2022-11-02 20:31:45,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417961497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:45,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:45,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:31:45,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060762872] [2022-11-02 20:31:45,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:45,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:45,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:45,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:45,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:31:45,235 INFO L87 Difference]: Start difference. First operand 371 states and 611 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:46,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:46,456 INFO L93 Difference]: Finished difference Result 739 states and 1221 transitions. [2022-11-02 20:31:46,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:31:46,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-11-02 20:31:46,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:46,460 INFO L225 Difference]: With dead ends: 739 [2022-11-02 20:31:46,460 INFO L226 Difference]: Without dead ends: 389 [2022-11-02 20:31:46,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:31:46,461 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 42 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:46,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 521 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 20:31:46,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-11-02 20:31:46,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 371. [2022-11-02 20:31:46,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 1.6486486486486487) internal successors, (610), 370 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:46,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 610 transitions. [2022-11-02 20:31:46,477 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 610 transitions. Word has length 112 [2022-11-02 20:31:46,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:46,477 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 610 transitions. [2022-11-02 20:31:46,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:46,478 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 610 transitions. [2022-11-02 20:31:46,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-02 20:31:46,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:46,480 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-11-02 20:31:46,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:31:46,480 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:46,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:46,481 INFO L85 PathProgramCache]: Analyzing trace with hash -763752458, now seen corresponding path program 1 times [2022-11-02 20:31:46,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:46,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119094018] [2022-11-02 20:31:46,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:46,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:46,899 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-02 20:31:46,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:46,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119094018] [2022-11-02 20:31:46,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119094018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:46,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:46,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:31:46,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175264065] [2022-11-02 20:31:46,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:46,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:46,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:46,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:46,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:31:46,905 INFO L87 Difference]: Start difference. First operand 371 states and 610 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:48,921 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 [] [2022-11-02 20:31:49,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:49,519 INFO L93 Difference]: Finished difference Result 801 states and 1308 transitions. [2022-11-02 20:31:49,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:31:49,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-11-02 20:31:49,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:49,523 INFO L225 Difference]: With dead ends: 801 [2022-11-02 20:31:49,523 INFO L226 Difference]: Without dead ends: 451 [2022-11-02 20:31:49,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:31:49,525 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 152 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 62 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:49,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 354 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 261 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-02 20:31:49,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-02 20:31:49,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 371. [2022-11-02 20:31:49,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 1.6297297297297297) internal successors, (603), 370 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:49,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 603 transitions. [2022-11-02 20:31:49,541 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 603 transitions. Word has length 112 [2022-11-02 20:31:49,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:49,541 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 603 transitions. [2022-11-02 20:31:49,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:49,542 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 603 transitions. [2022-11-02 20:31:49,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-02 20:31:49,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:49,544 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-11-02 20:31:49,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 20:31:49,544 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:49,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:49,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1523411789, now seen corresponding path program 1 times [2022-11-02 20:31:49,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:49,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390826776] [2022-11-02 20:31:49,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:49,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:49,869 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-02 20:31:49,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:49,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390826776] [2022-11-02 20:31:49,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390826776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:49,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:49,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:31:49,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282004274] [2022-11-02 20:31:49,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:49,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:49,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:49,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:49,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:31:49,872 INFO L87 Difference]: Start difference. First operand 371 states and 603 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:50,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:50,896 INFO L93 Difference]: Finished difference Result 738 states and 1204 transitions. [2022-11-02 20:31:50,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:31:50,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-11-02 20:31:50,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:50,899 INFO L225 Difference]: With dead ends: 738 [2022-11-02 20:31:50,899 INFO L226 Difference]: Without dead ends: 388 [2022-11-02 20:31:50,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:31:50,901 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 33 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:50,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 523 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:31:50,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-11-02 20:31:50,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 371. [2022-11-02 20:31:50,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 1.627027027027027) internal successors, (602), 370 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:50,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 602 transitions. [2022-11-02 20:31:50,917 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 602 transitions. Word has length 112 [2022-11-02 20:31:50,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:50,917 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 602 transitions. [2022-11-02 20:31:50,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:50,918 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 602 transitions. [2022-11-02 20:31:50,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-02 20:31:50,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:50,920 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-11-02 20:31:50,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 20:31:50,921 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:50,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:50,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1338827316, now seen corresponding path program 1 times [2022-11-02 20:31:50,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:50,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517823626] [2022-11-02 20:31:50,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:50,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:51,266 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-02 20:31:51,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:51,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517823626] [2022-11-02 20:31:51,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517823626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:51,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:51,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:31:51,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291517052] [2022-11-02 20:31:51,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:51,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:51,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:51,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:51,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:31:51,270 INFO L87 Difference]: Start difference. First operand 371 states and 602 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:53,296 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 [] [2022-11-02 20:31:53,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:53,664 INFO L93 Difference]: Finished difference Result 738 states and 1202 transitions. [2022-11-02 20:31:53,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:31:53,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2022-11-02 20:31:53,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:53,666 INFO L225 Difference]: With dead ends: 738 [2022-11-02 20:31:53,666 INFO L226 Difference]: Without dead ends: 388 [2022-11-02 20:31:53,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:31:53,668 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 37 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:53,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 523 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 158 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-02 20:31:53,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-11-02 20:31:53,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 371. [2022-11-02 20:31:53,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 1.6243243243243244) internal successors, (601), 370 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:53,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 601 transitions. [2022-11-02 20:31:53,680 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 601 transitions. Word has length 113 [2022-11-02 20:31:53,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:53,681 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 601 transitions. [2022-11-02 20:31:53,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:53,681 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 601 transitions. [2022-11-02 20:31:53,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-02 20:31:53,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:53,683 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-11-02 20:31:53,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 20:31:53,684 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:53,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:53,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1036019589, now seen corresponding path program 1 times [2022-11-02 20:31:53,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:53,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829179082] [2022-11-02 20:31:53,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:53,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:53,996 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-02 20:31:53,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:53,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829179082] [2022-11-02 20:31:53,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829179082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:53,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:53,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:31:53,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285096943] [2022-11-02 20:31:53,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:53,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:53,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:54,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:54,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:31:54,001 INFO L87 Difference]: Start difference. First operand 371 states and 601 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:55,430 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 [] [2022-11-02 20:31:55,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:55,818 INFO L93 Difference]: Finished difference Result 738 states and 1200 transitions. [2022-11-02 20:31:55,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:31:55,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2022-11-02 20:31:55,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:55,820 INFO L225 Difference]: With dead ends: 738 [2022-11-02 20:31:55,821 INFO L226 Difference]: Without dead ends: 388 [2022-11-02 20:31:55,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:31:55,822 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 35 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:55,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 523 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-02 20:31:55,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-11-02 20:31:55,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 371. [2022-11-02 20:31:55,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 1.6216216216216217) internal successors, (600), 370 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:55,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 600 transitions. [2022-11-02 20:31:55,835 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 600 transitions. Word has length 114 [2022-11-02 20:31:55,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:55,836 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 600 transitions. [2022-11-02 20:31:55,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:55,836 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 600 transitions. [2022-11-02 20:31:55,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-02 20:31:55,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:55,838 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-11-02 20:31:55,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 20:31:55,839 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:55,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:55,840 INFO L85 PathProgramCache]: Analyzing trace with hash -477172775, now seen corresponding path program 1 times [2022-11-02 20:31:55,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:55,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187514388] [2022-11-02 20:31:55,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:55,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:56,192 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-02 20:31:56,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:56,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187514388] [2022-11-02 20:31:56,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187514388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:56,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:56,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:31:56,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991119143] [2022-11-02 20:31:56,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:56,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:56,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:56,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:56,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:31:56,196 INFO L87 Difference]: Start difference. First operand 371 states and 600 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:57,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:57,318 INFO L93 Difference]: Finished difference Result 728 states and 1185 transitions. [2022-11-02 20:31:57,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:31:57,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-11-02 20:31:57,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:57,321 INFO L225 Difference]: With dead ends: 728 [2022-11-02 20:31:57,321 INFO L226 Difference]: Without dead ends: 378 [2022-11-02 20:31:57,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:31:57,322 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 26 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:57,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 537 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 20:31:57,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-11-02 20:31:57,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 371. [2022-11-02 20:31:57,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 1.6189189189189188) internal successors, (599), 370 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:57,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 599 transitions. [2022-11-02 20:31:57,336 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 599 transitions. Word has length 115 [2022-11-02 20:31:57,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:57,336 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 599 transitions. [2022-11-02 20:31:57,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:57,337 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 599 transitions. [2022-11-02 20:31:57,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-02 20:31:57,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:57,339 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 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] [2022-11-02 20:31:57,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 20:31:57,340 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:57,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:57,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1048591620, now seen corresponding path program 1 times [2022-11-02 20:31:57,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:57,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300058141] [2022-11-02 20:31:57,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:57,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:57,802 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:31:57,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:57,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300058141] [2022-11-02 20:31:57,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300058141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:57,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:57,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:31:57,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364382207] [2022-11-02 20:31:57,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:57,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:57,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:57,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:57,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:31:57,807 INFO L87 Difference]: Start difference. First operand 371 states and 599 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:59,817 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 [] [2022-11-02 20:32:00,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:00,276 INFO L93 Difference]: Finished difference Result 815 states and 1316 transitions. [2022-11-02 20:32:00,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:32:00,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2022-11-02 20:32:00,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:00,279 INFO L225 Difference]: With dead ends: 815 [2022-11-02 20:32:00,279 INFO L226 Difference]: Without dead ends: 465 [2022-11-02 20:32:00,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:00,281 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 82 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:00,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 485 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 250 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-02 20:32:00,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-11-02 20:32:00,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 411. [2022-11-02 20:32:00,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 1.6243902439024391) internal successors, (666), 410 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:00,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 666 transitions. [2022-11-02 20:32:00,312 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 666 transitions. Word has length 120 [2022-11-02 20:32:00,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:00,312 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 666 transitions. [2022-11-02 20:32:00,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:00,313 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 666 transitions. [2022-11-02 20:32:00,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-02 20:32:00,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:00,315 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 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] [2022-11-02 20:32:00,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 20:32:00,315 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:00,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:00,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1021526018, now seen corresponding path program 1 times [2022-11-02 20:32:00,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:00,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755046915] [2022-11-02 20:32:00,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:00,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:00,714 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 20:32:00,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:00,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755046915] [2022-11-02 20:32:00,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755046915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:00,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:00,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:32:00,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596278605] [2022-11-02 20:32:00,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:00,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:32:00,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:00,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:32:00,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:32:00,717 INFO L87 Difference]: Start difference. First operand 411 states and 666 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:02,733 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 [] [2022-11-02 20:32:03,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:03,131 INFO L93 Difference]: Finished difference Result 848 states and 1377 transitions. [2022-11-02 20:32:03,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:32:03,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2022-11-02 20:32:03,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:03,134 INFO L225 Difference]: With dead ends: 848 [2022-11-02 20:32:03,134 INFO L226 Difference]: Without dead ends: 458 [2022-11-02 20:32:03,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:03,136 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 37 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:03,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 617 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 180 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-02 20:32:03,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-11-02 20:32:03,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 435. [2022-11-02 20:32:03,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 434 states have (on average 1.6244239631336406) internal successors, (705), 434 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:03,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 705 transitions. [2022-11-02 20:32:03,152 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 705 transitions. Word has length 120 [2022-11-02 20:32:03,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:03,152 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 705 transitions. [2022-11-02 20:32:03,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:03,153 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 705 transitions. [2022-11-02 20:32:03,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-02 20:32:03,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:03,155 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2022-11-02 20:32:03,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-02 20:32:03,156 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:03,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:03,156 INFO L85 PathProgramCache]: Analyzing trace with hash -909602799, now seen corresponding path program 1 times [2022-11-02 20:32:03,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:03,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808985026] [2022-11-02 20:32:03,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:03,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:03,609 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:32:03,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:03,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808985026] [2022-11-02 20:32:03,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808985026] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:03,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:03,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:32:03,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905735635] [2022-11-02 20:32:03,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:03,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:32:03,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:03,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:32:03,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:32:03,612 INFO L87 Difference]: Start difference. First operand 435 states and 705 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:05,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:32:06,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:06,022 INFO L93 Difference]: Finished difference Result 894 states and 1445 transitions. [2022-11-02 20:32:06,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:32:06,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-11-02 20:32:06,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:06,027 INFO L225 Difference]: With dead ends: 894 [2022-11-02 20:32:06,027 INFO L226 Difference]: Without dead ends: 480 [2022-11-02 20:32:06,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:06,028 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 64 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:06,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 491 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-02 20:32:06,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-11-02 20:32:06,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 438. [2022-11-02 20:32:06,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 1.620137299771167) internal successors, (708), 437 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:06,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 708 transitions. [2022-11-02 20:32:06,044 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 708 transitions. Word has length 128 [2022-11-02 20:32:06,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:06,045 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 708 transitions. [2022-11-02 20:32:06,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:06,045 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 708 transitions. [2022-11-02 20:32:06,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 20:32:06,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:06,048 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 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] [2022-11-02 20:32:06,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-02 20:32:06,048 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:06,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:06,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1310949078, now seen corresponding path program 1 times [2022-11-02 20:32:06,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:06,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286077619] [2022-11-02 20:32:06,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:06,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:06,639 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-02 20:32:06,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:06,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286077619] [2022-11-02 20:32:06,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286077619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:06,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:06,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:32:06,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569087703] [2022-11-02 20:32:06,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:06,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:32:06,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:06,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:32:06,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:32:06,642 INFO L87 Difference]: Start difference. First operand 438 states and 708 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:08,652 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 [] [2022-11-02 20:32:09,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:09,250 INFO L93 Difference]: Finished difference Result 934 states and 1503 transitions. [2022-11-02 20:32:09,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:32:09,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-11-02 20:32:09,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:09,254 INFO L225 Difference]: With dead ends: 934 [2022-11-02 20:32:09,254 INFO L226 Difference]: Without dead ends: 517 [2022-11-02 20:32:09,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:09,255 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 152 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 60 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:09,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 356 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 259 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-02 20:32:09,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2022-11-02 20:32:09,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 438. [2022-11-02 20:32:09,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 1.6018306636155606) internal successors, (700), 437 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:09,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 700 transitions. [2022-11-02 20:32:09,270 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 700 transitions. Word has length 134 [2022-11-02 20:32:09,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:09,270 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 700 transitions. [2022-11-02 20:32:09,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:09,271 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 700 transitions. [2022-11-02 20:32:09,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 20:32:09,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:09,273 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 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] [2022-11-02 20:32:09,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-02 20:32:09,273 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:09,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:09,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1846542571, now seen corresponding path program 1 times [2022-11-02 20:32:09,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:09,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087440645] [2022-11-02 20:32:09,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:09,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:09,747 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-02 20:32:09,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:09,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087440645] [2022-11-02 20:32:09,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087440645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:09,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:09,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:32:09,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497437887] [2022-11-02 20:32:09,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:09,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:32:09,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:09,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:32:09,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:32:09,750 INFO L87 Difference]: Start difference. First operand 438 states and 700 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:11,765 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 [] [2022-11-02 20:32:12,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:12,257 INFO L93 Difference]: Finished difference Result 933 states and 1486 transitions. [2022-11-02 20:32:12,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:32:12,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-11-02 20:32:12,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:12,260 INFO L225 Difference]: With dead ends: 933 [2022-11-02 20:32:12,260 INFO L226 Difference]: Without dead ends: 516 [2022-11-02 20:32:12,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:12,262 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 144 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 59 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:12,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 358 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 257 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-02 20:32:12,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-11-02 20:32:12,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 438. [2022-11-02 20:32:12,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 1.585812356979405) internal successors, (693), 437 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:12,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 693 transitions. [2022-11-02 20:32:12,277 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 693 transitions. Word has length 134 [2022-11-02 20:32:12,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:12,277 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 693 transitions. [2022-11-02 20:32:12,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:12,277 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 693 transitions. [2022-11-02 20:32:12,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-02 20:32:12,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:12,279 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 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] [2022-11-02 20:32:12,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-02 20:32:12,280 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:12,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:12,280 INFO L85 PathProgramCache]: Analyzing trace with hash -50542740, now seen corresponding path program 1 times [2022-11-02 20:32:12,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:12,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262526184] [2022-11-02 20:32:12,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:12,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:12,764 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-02 20:32:12,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:12,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262526184] [2022-11-02 20:32:12,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262526184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:12,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:12,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:32:12,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584078274] [2022-11-02 20:32:12,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:12,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:32:12,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:12,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:32:12,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:12,768 INFO L87 Difference]: Start difference. First operand 438 states and 693 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:14,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:14,130 INFO L93 Difference]: Finished difference Result 865 states and 1374 transitions. [2022-11-02 20:32:14,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:32:14,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2022-11-02 20:32:14,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:14,136 INFO L225 Difference]: With dead ends: 865 [2022-11-02 20:32:14,136 INFO L226 Difference]: Without dead ends: 448 [2022-11-02 20:32:14,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:32:14,141 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 153 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:14,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 384 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 20:32:14,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-02 20:32:14,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 447. [2022-11-02 20:32:14,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.5784753363228698) internal successors, (704), 446 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:14,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 704 transitions. [2022-11-02 20:32:14,168 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 704 transitions. Word has length 135 [2022-11-02 20:32:14,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:14,169 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 704 transitions. [2022-11-02 20:32:14,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:14,169 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 704 transitions. [2022-11-02 20:32:14,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-02 20:32:14,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:14,171 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 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] [2022-11-02 20:32:14,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-02 20:32:14,171 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:14,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:14,172 INFO L85 PathProgramCache]: Analyzing trace with hash 181553585, now seen corresponding path program 1 times [2022-11-02 20:32:14,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:14,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496348037] [2022-11-02 20:32:14,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:14,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:14,621 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-02 20:32:14,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:14,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496348037] [2022-11-02 20:32:14,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496348037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:14,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:14,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:32:14,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174103980] [2022-11-02 20:32:14,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:14,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:32:14,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:14,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:32:14,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:32:14,625 INFO L87 Difference]: Start difference. First operand 447 states and 704 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:16,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:16,070 INFO L93 Difference]: Finished difference Result 913 states and 1436 transitions. [2022-11-02 20:32:16,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:32:16,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2022-11-02 20:32:16,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:16,072 INFO L225 Difference]: With dead ends: 913 [2022-11-02 20:32:16,072 INFO L226 Difference]: Without dead ends: 487 [2022-11-02 20:32:16,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:16,074 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 89 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:16,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 521 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 20:32:16,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-11-02 20:32:16,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 447. [2022-11-02 20:32:16,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.5762331838565022) internal successors, (703), 446 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:16,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 703 transitions. [2022-11-02 20:32:16,091 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 703 transitions. Word has length 136 [2022-11-02 20:32:16,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:16,091 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 703 transitions. [2022-11-02 20:32:16,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:16,092 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 703 transitions. [2022-11-02 20:32:16,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-02 20:32:16,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:16,093 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 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] [2022-11-02 20:32:16,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-02 20:32:16,094 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:16,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:16,095 INFO L85 PathProgramCache]: Analyzing trace with hash -701955405, now seen corresponding path program 1 times [2022-11-02 20:32:16,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:16,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347002098] [2022-11-02 20:32:16,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:16,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:16,530 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-02 20:32:16,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:16,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347002098] [2022-11-02 20:32:16,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347002098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:16,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:16,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:32:16,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661770406] [2022-11-02 20:32:16,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:16,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:32:16,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:16,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:32:16,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:32:16,534 INFO L87 Difference]: Start difference. First operand 447 states and 703 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:17,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:17,844 INFO L93 Difference]: Finished difference Result 894 states and 1408 transitions. [2022-11-02 20:32:17,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:32:17,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2022-11-02 20:32:17,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:17,846 INFO L225 Difference]: With dead ends: 894 [2022-11-02 20:32:17,847 INFO L226 Difference]: Without dead ends: 468 [2022-11-02 20:32:17,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:17,848 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 45 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:17,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 613 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 20:32:17,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-11-02 20:32:17,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 447. [2022-11-02 20:32:17,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.5739910313901346) internal successors, (702), 446 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:17,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 702 transitions. [2022-11-02 20:32:17,862 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 702 transitions. Word has length 136 [2022-11-02 20:32:17,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:17,862 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 702 transitions. [2022-11-02 20:32:17,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:17,863 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 702 transitions. [2022-11-02 20:32:17,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-02 20:32:17,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:17,864 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 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] [2022-11-02 20:32:17,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-02 20:32:17,865 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:17,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:17,865 INFO L85 PathProgramCache]: Analyzing trace with hash 246747578, now seen corresponding path program 1 times [2022-11-02 20:32:17,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:17,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522810853] [2022-11-02 20:32:17,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:17,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:18,256 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-02 20:32:18,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:18,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522810853] [2022-11-02 20:32:18,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522810853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:18,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:18,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:32:18,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371884367] [2022-11-02 20:32:18,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:18,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:32:18,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:18,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:32:18,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:32:18,259 INFO L87 Difference]: Start difference. First operand 447 states and 702 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:20,273 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 [] [2022-11-02 20:32:20,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:20,881 INFO L93 Difference]: Finished difference Result 951 states and 1489 transitions. [2022-11-02 20:32:20,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:32:20,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2022-11-02 20:32:20,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:20,884 INFO L225 Difference]: With dead ends: 951 [2022-11-02 20:32:20,884 INFO L226 Difference]: Without dead ends: 525 [2022-11-02 20:32:20,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:20,886 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 147 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 57 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:20,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 366 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 255 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-02 20:32:20,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-11-02 20:32:20,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 447. [2022-11-02 20:32:20,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.5560538116591929) internal successors, (694), 446 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:20,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 694 transitions. [2022-11-02 20:32:20,902 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 694 transitions. Word has length 137 [2022-11-02 20:32:20,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:20,902 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 694 transitions. [2022-11-02 20:32:20,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:20,903 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 694 transitions. [2022-11-02 20:32:20,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-02 20:32:20,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:20,904 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 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] [2022-11-02 20:32:20,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-02 20:32:20,905 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:20,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:20,905 INFO L85 PathProgramCache]: Analyzing trace with hash -282582356, now seen corresponding path program 1 times [2022-11-02 20:32:20,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:20,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043304566] [2022-11-02 20:32:20,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:20,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:21,376 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-02 20:32:21,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:21,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043304566] [2022-11-02 20:32:21,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043304566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:21,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:21,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:32:21,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264618610] [2022-11-02 20:32:21,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:21,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:32:21,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:21,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:32:21,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:32:21,379 INFO L87 Difference]: Start difference. First operand 447 states and 694 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:23,388 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 [] [2022-11-02 20:32:23,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:23,952 INFO L93 Difference]: Finished difference Result 951 states and 1473 transitions. [2022-11-02 20:32:23,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:32:23,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2022-11-02 20:32:23,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:23,956 INFO L225 Difference]: With dead ends: 951 [2022-11-02 20:32:23,957 INFO L226 Difference]: Without dead ends: 525 [2022-11-02 20:32:23,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:23,958 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 145 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 55 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:23,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 394 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 255 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-02 20:32:23,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-11-02 20:32:23,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 447. [2022-11-02 20:32:23,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.5381165919282511) internal successors, (686), 446 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:23,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 686 transitions. [2022-11-02 20:32:23,978 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 686 transitions. Word has length 138 [2022-11-02 20:32:23,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:23,978 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 686 transitions. [2022-11-02 20:32:23,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:23,979 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 686 transitions. [2022-11-02 20:32:23,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-02 20:32:23,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:23,981 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 20:32:23,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-02 20:32:23,981 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:23,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:23,982 INFO L85 PathProgramCache]: Analyzing trace with hash -655242258, now seen corresponding path program 1 times [2022-11-02 20:32:23,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:23,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222647753] [2022-11-02 20:32:23,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:23,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:24,503 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-02 20:32:24,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:24,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222647753] [2022-11-02 20:32:24,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222647753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:24,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:24,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:32:24,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142614201] [2022-11-02 20:32:24,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:24,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:32:24,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:24,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:32:24,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:32:24,507 INFO L87 Difference]: Start difference. First operand 447 states and 686 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:26,177 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 [] [2022-11-02 20:32:26,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:26,809 INFO L93 Difference]: Finished difference Result 991 states and 1521 transitions. [2022-11-02 20:32:26,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:32:26,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-11-02 20:32:26,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:26,812 INFO L225 Difference]: With dead ends: 991 [2022-11-02 20:32:26,812 INFO L226 Difference]: Without dead ends: 565 [2022-11-02 20:32:26,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:26,817 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 129 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:26,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 366 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 20:32:26,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-11-02 20:32:26,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 477. [2022-11-02 20:32:26,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 476 states have (on average 1.5294117647058822) internal successors, (728), 476 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:26,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 728 transitions. [2022-11-02 20:32:26,840 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 728 transitions. Word has length 141 [2022-11-02 20:32:26,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:26,841 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 728 transitions. [2022-11-02 20:32:26,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:26,841 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 728 transitions. [2022-11-02 20:32:26,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-02 20:32:26,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:26,843 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-11-02 20:32:26,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-02 20:32:26,844 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:26,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:26,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1461975096, now seen corresponding path program 1 times [2022-11-02 20:32:26,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:26,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895645758] [2022-11-02 20:32:26,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:26,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:27,228 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-02 20:32:27,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:27,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895645758] [2022-11-02 20:32:27,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895645758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:27,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:27,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:32:27,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082930220] [2022-11-02 20:32:27,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:27,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:32:27,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:27,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:32:27,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:32:27,231 INFO L87 Difference]: Start difference. First operand 477 states and 728 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:29,246 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 [] [2022-11-02 20:32:29,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:29,699 INFO L93 Difference]: Finished difference Result 963 states and 1472 transitions. [2022-11-02 20:32:29,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:32:29,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-11-02 20:32:29,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:29,701 INFO L225 Difference]: With dead ends: 963 [2022-11-02 20:32:29,701 INFO L226 Difference]: Without dead ends: 507 [2022-11-02 20:32:29,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:29,708 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 67 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:29,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 521 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 225 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-02 20:32:29,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-11-02 20:32:29,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 477. [2022-11-02 20:32:29,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 476 states have (on average 1.5273109243697478) internal successors, (727), 476 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:29,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 727 transitions. [2022-11-02 20:32:29,731 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 727 transitions. Word has length 142 [2022-11-02 20:32:29,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:29,732 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 727 transitions. [2022-11-02 20:32:29,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:29,732 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 727 transitions. [2022-11-02 20:32:29,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-02 20:32:29,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:29,734 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 20:32:29,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-02 20:32:29,735 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:29,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:29,735 INFO L85 PathProgramCache]: Analyzing trace with hash -2035167520, now seen corresponding path program 1 times [2022-11-02 20:32:29,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:29,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348747864] [2022-11-02 20:32:29,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:29,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:30,154 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-02 20:32:30,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:30,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348747864] [2022-11-02 20:32:30,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348747864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:30,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:30,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:32:30,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734032935] [2022-11-02 20:32:30,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:30,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:32:30,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:30,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:32:30,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:32:30,157 INFO L87 Difference]: Start difference. First operand 477 states and 727 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:31,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:31,444 INFO L93 Difference]: Finished difference Result 961 states and 1468 transitions. [2022-11-02 20:32:31,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:32:31,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-11-02 20:32:31,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:31,446 INFO L225 Difference]: With dead ends: 961 [2022-11-02 20:32:31,446 INFO L226 Difference]: Without dead ends: 505 [2022-11-02 20:32:31,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:31,448 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 58 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:31,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 523 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 20:32:31,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-11-02 20:32:31,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 477. [2022-11-02 20:32:31,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 476 states have (on average 1.5252100840336134) internal successors, (726), 476 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:31,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 726 transitions. [2022-11-02 20:32:31,464 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 726 transitions. Word has length 142 [2022-11-02 20:32:31,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:31,464 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 726 transitions. [2022-11-02 20:32:31,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:31,465 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 726 transitions. [2022-11-02 20:32:31,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-02 20:32:31,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:31,466 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-11-02 20:32:31,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-02 20:32:31,467 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:31,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:31,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1801951302, now seen corresponding path program 1 times [2022-11-02 20:32:31,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:31,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140839573] [2022-11-02 20:32:31,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:31,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:31,755 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-02 20:32:31,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:31,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140839573] [2022-11-02 20:32:31,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140839573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:31,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:31,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:32:31,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486570897] [2022-11-02 20:32:31,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:31,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:32:31,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:31,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:32:31,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:32:31,758 INFO L87 Difference]: Start difference. First operand 477 states and 726 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:33,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:32:33,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:33,653 INFO L93 Difference]: Finished difference Result 1011 states and 1537 transitions. [2022-11-02 20:32:33,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:32:33,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-11-02 20:32:33,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:33,657 INFO L225 Difference]: With dead ends: 1011 [2022-11-02 20:32:33,657 INFO L226 Difference]: Without dead ends: 555 [2022-11-02 20:32:33,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:33,658 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 121 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:33,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 394 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-02 20:32:33,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-11-02 20:32:33,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 477. [2022-11-02 20:32:33,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 476 states have (on average 1.5210084033613445) internal successors, (724), 476 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:33,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 724 transitions. [2022-11-02 20:32:33,674 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 724 transitions. Word has length 142 [2022-11-02 20:32:33,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:33,674 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 724 transitions. [2022-11-02 20:32:33,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:33,675 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 724 transitions. [2022-11-02 20:32:33,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-02 20:32:33,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:33,676 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-11-02 20:32:33,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-02 20:32:33,677 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:33,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:33,677 INFO L85 PathProgramCache]: Analyzing trace with hash -279960039, now seen corresponding path program 1 times [2022-11-02 20:32:33,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:33,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889667685] [2022-11-02 20:32:33,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:33,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-02 20:32:34,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:34,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889667685] [2022-11-02 20:32:34,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889667685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:34,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:34,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:32:34,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893359613] [2022-11-02 20:32:34,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:34,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:32:34,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:34,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:32:34,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:32:34,123 INFO L87 Difference]: Start difference. First operand 477 states and 724 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:36,131 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 [] [2022-11-02 20:32:36,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:36,636 INFO L93 Difference]: Finished difference Result 1051 states and 1595 transitions. [2022-11-02 20:32:36,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:32:36,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2022-11-02 20:32:36,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:36,641 INFO L225 Difference]: With dead ends: 1051 [2022-11-02 20:32:36,641 INFO L226 Difference]: Without dead ends: 595 [2022-11-02 20:32:36,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:36,642 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 130 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 53 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:36,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 394 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 256 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-02 20:32:36,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-11-02 20:32:36,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 505. [2022-11-02 20:32:36,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 1.5099206349206349) internal successors, (761), 504 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:36,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 761 transitions. [2022-11-02 20:32:36,664 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 761 transitions. Word has length 144 [2022-11-02 20:32:36,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:36,665 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 761 transitions. [2022-11-02 20:32:36,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:36,665 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 761 transitions. [2022-11-02 20:32:36,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-02 20:32:36,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:36,667 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:32:36,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-02 20:32:36,668 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:36,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:36,668 INFO L85 PathProgramCache]: Analyzing trace with hash 504114503, now seen corresponding path program 1 times [2022-11-02 20:32:36,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:36,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917623579] [2022-11-02 20:32:36,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:36,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:37,029 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-02 20:32:37,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:37,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917623579] [2022-11-02 20:32:37,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917623579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:37,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:37,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:32:37,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679230985] [2022-11-02 20:32:37,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:37,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:32:37,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:37,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:32:37,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:32:37,032 INFO L87 Difference]: Start difference. First operand 505 states and 761 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:38,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:32:39,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:39,398 INFO L93 Difference]: Finished difference Result 1067 states and 1607 transitions. [2022-11-02 20:32:39,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:32:39,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2022-11-02 20:32:39,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:39,403 INFO L225 Difference]: With dead ends: 1067 [2022-11-02 20:32:39,403 INFO L226 Difference]: Without dead ends: 583 [2022-11-02 20:32:39,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:39,404 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 129 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:39,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 366 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-02 20:32:39,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-11-02 20:32:39,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 505. [2022-11-02 20:32:39,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 1.496031746031746) internal successors, (754), 504 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:39,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 754 transitions. [2022-11-02 20:32:39,443 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 754 transitions. Word has length 145 [2022-11-02 20:32:39,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:39,443 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 754 transitions. [2022-11-02 20:32:39,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:39,444 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 754 transitions. [2022-11-02 20:32:39,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-02 20:32:39,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:39,445 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2022-11-02 20:32:39,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-02 20:32:39,446 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:39,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:39,446 INFO L85 PathProgramCache]: Analyzing trace with hash -423127345, now seen corresponding path program 1 times [2022-11-02 20:32:39,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:39,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981868232] [2022-11-02 20:32:39,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:39,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:39,668 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-02 20:32:39,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:39,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981868232] [2022-11-02 20:32:39,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981868232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:39,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:39,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:32:39,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626649245] [2022-11-02 20:32:39,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:39,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:32:39,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:39,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:32:39,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:39,675 INFO L87 Difference]: Start difference. First operand 505 states and 754 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:39,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:39,776 INFO L93 Difference]: Finished difference Result 1466 states and 2203 transitions. [2022-11-02 20:32:39,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:32:39,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2022-11-02 20:32:39,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:39,781 INFO L225 Difference]: With dead ends: 1466 [2022-11-02 20:32:39,781 INFO L226 Difference]: Without dead ends: 982 [2022-11-02 20:32:39,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:39,783 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 137 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:39,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 445 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:39,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2022-11-02 20:32:39,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 982. [2022-11-02 20:32:39,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 981 states have (on average 1.491335372069317) internal successors, (1463), 981 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:39,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1463 transitions. [2022-11-02 20:32:39,830 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1463 transitions. Word has length 150 [2022-11-02 20:32:39,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:39,831 INFO L495 AbstractCegarLoop]: Abstraction has 982 states and 1463 transitions. [2022-11-02 20:32:39,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:39,831 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1463 transitions. [2022-11-02 20:32:39,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-02 20:32:39,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:39,834 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2022-11-02 20:32:39,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-02 20:32:39,834 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:39,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:39,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1461711919, now seen corresponding path program 1 times [2022-11-02 20:32:39,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:39,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455868875] [2022-11-02 20:32:39,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:39,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:40,023 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-02 20:32:40,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:40,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455868875] [2022-11-02 20:32:40,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455868875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:40,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:40,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:32:40,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728191282] [2022-11-02 20:32:40,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:40,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:32:40,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:40,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:32:40,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:40,030 INFO L87 Difference]: Start difference. First operand 982 states and 1463 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:40,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:40,123 INFO L93 Difference]: Finished difference Result 1970 states and 2938 transitions. [2022-11-02 20:32:40,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:32:40,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2022-11-02 20:32:40,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:40,127 INFO L225 Difference]: With dead ends: 1970 [2022-11-02 20:32:40,128 INFO L226 Difference]: Without dead ends: 1009 [2022-11-02 20:32:40,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:40,133 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 15 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:40,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 418 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:32:40,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2022-11-02 20:32:40,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 1009. [2022-11-02 20:32:40,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 1008 states have (on average 1.4861111111111112) internal successors, (1498), 1008 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:40,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1498 transitions. [2022-11-02 20:32:40,177 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1498 transitions. Word has length 150 [2022-11-02 20:32:40,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:40,177 INFO L495 AbstractCegarLoop]: Abstraction has 1009 states and 1498 transitions. [2022-11-02 20:32:40,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:40,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1498 transitions. [2022-11-02 20:32:40,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-02 20:32:40,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:40,180 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2022-11-02 20:32:40,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-02 20:32:40,180 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:40,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:40,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1885203411, now seen corresponding path program 1 times [2022-11-02 20:32:40,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:40,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412889804] [2022-11-02 20:32:40,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:40,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:40,353 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-02 20:32:40,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:40,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412889804] [2022-11-02 20:32:40,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412889804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:40,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:40,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:32:40,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448373749] [2022-11-02 20:32:40,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:40,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:32:40,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:40,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:32:40,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:40,355 INFO L87 Difference]: Start difference. First operand 1009 states and 1498 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:40,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:40,424 INFO L93 Difference]: Finished difference Result 1999 states and 2974 transitions. [2022-11-02 20:32:40,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:32:40,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2022-11-02 20:32:40,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:40,427 INFO L225 Difference]: With dead ends: 1999 [2022-11-02 20:32:40,427 INFO L226 Difference]: Without dead ends: 1011 [2022-11-02 20:32:40,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:40,428 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 4 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:40,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 397 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:32:40,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2022-11-02 20:32:40,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 1011. [2022-11-02 20:32:40,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 1010 states have (on average 1.4851485148514851) internal successors, (1500), 1010 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:40,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1500 transitions. [2022-11-02 20:32:40,474 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1500 transitions. Word has length 150 [2022-11-02 20:32:40,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:40,474 INFO L495 AbstractCegarLoop]: Abstraction has 1011 states and 1500 transitions. [2022-11-02 20:32:40,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:40,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1500 transitions. [2022-11-02 20:32:40,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-02 20:32:40,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:40,477 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 20:32:40,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-02 20:32:40,478 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:40,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:40,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1274245440, now seen corresponding path program 1 times [2022-11-02 20:32:40,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:40,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942908281] [2022-11-02 20:32:40,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:40,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:40,671 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-02 20:32:40,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:40,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942908281] [2022-11-02 20:32:40,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942908281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:40,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:40,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:32:40,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539695988] [2022-11-02 20:32:40,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:40,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:32:40,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:40,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:32:40,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:40,674 INFO L87 Difference]: Start difference. First operand 1011 states and 1500 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:40,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:40,786 INFO L93 Difference]: Finished difference Result 2474 states and 3690 transitions. [2022-11-02 20:32:40,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:32:40,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2022-11-02 20:32:40,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:40,792 INFO L225 Difference]: With dead ends: 2474 [2022-11-02 20:32:40,793 INFO L226 Difference]: Without dead ends: 1486 [2022-11-02 20:32:40,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:40,795 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 143 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:40,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 577 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:40,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2022-11-02 20:32:40,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1486. [2022-11-02 20:32:40,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 1.4855218855218855) internal successors, (2206), 1485 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:40,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2206 transitions. [2022-11-02 20:32:40,885 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2206 transitions. Word has length 169 [2022-11-02 20:32:40,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:40,886 INFO L495 AbstractCegarLoop]: Abstraction has 1486 states and 2206 transitions. [2022-11-02 20:32:40,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:40,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2206 transitions. [2022-11-02 20:32:40,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-02 20:32:40,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:40,889 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 20:32:40,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-02 20:32:40,890 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:40,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:40,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1177340101, now seen corresponding path program 1 times [2022-11-02 20:32:40,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:40,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209585985] [2022-11-02 20:32:40,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:40,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:41,057 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-02 20:32:41,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:41,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209585985] [2022-11-02 20:32:41,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209585985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:41,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:41,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:32:41,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305598366] [2022-11-02 20:32:41,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:41,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:32:41,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:41,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:32:41,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:41,060 INFO L87 Difference]: Start difference. First operand 1486 states and 2206 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:41,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:41,192 INFO L93 Difference]: Finished difference Result 3392 states and 5053 transitions. [2022-11-02 20:32:41,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:32:41,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2022-11-02 20:32:41,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:41,200 INFO L225 Difference]: With dead ends: 3392 [2022-11-02 20:32:41,200 INFO L226 Difference]: Without dead ends: 1929 [2022-11-02 20:32:41,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:41,202 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 140 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:41,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 571 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:41,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1929 states. [2022-11-02 20:32:41,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1929 to 1929. [2022-11-02 20:32:41,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1928 states have (on average 1.4849585062240664) internal successors, (2863), 1928 states have internal predecessors, (2863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:41,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 2863 transitions. [2022-11-02 20:32:41,284 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 2863 transitions. Word has length 170 [2022-11-02 20:32:41,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:41,284 INFO L495 AbstractCegarLoop]: Abstraction has 1929 states and 2863 transitions. [2022-11-02 20:32:41,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:41,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 2863 transitions. [2022-11-02 20:32:41,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-11-02 20:32:41,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:41,289 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-02 20:32:41,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-02 20:32:41,289 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:41,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:41,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1971855452, now seen corresponding path program 1 times [2022-11-02 20:32:41,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:41,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426225282] [2022-11-02 20:32:41,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:41,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:41,582 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-11-02 20:32:41,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:41,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426225282] [2022-11-02 20:32:41,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426225282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:41,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:41,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:32:41,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973340899] [2022-11-02 20:32:41,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:41,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:32:41,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:41,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:32:41,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:41,586 INFO L87 Difference]: Start difference. First operand 1929 states and 2863 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:41,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:41,733 INFO L93 Difference]: Finished difference Result 4317 states and 6427 transitions. [2022-11-02 20:32:41,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:32:41,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 252 [2022-11-02 20:32:41,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:41,747 INFO L225 Difference]: With dead ends: 4317 [2022-11-02 20:32:41,747 INFO L226 Difference]: Without dead ends: 2411 [2022-11-02 20:32:41,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:41,749 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 155 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:41,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 378 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:41,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2022-11-02 20:32:41,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 2411. [2022-11-02 20:32:41,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2411 states, 2410 states have (on average 1.4867219917012449) internal successors, (3583), 2410 states have internal predecessors, (3583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:41,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 3583 transitions. [2022-11-02 20:32:41,856 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 3583 transitions. Word has length 252 [2022-11-02 20:32:41,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:41,857 INFO L495 AbstractCegarLoop]: Abstraction has 2411 states and 3583 transitions. [2022-11-02 20:32:41,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:41,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 3583 transitions. [2022-11-02 20:32:41,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-02 20:32:41,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:41,862 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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] [2022-11-02 20:32:41,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-02 20:32:41,863 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:41,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:41,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1276348089, now seen corresponding path program 1 times [2022-11-02 20:32:41,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:41,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364126278] [2022-11-02 20:32:41,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:41,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:42,862 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 474 proven. 106 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-02 20:32:42,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:42,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364126278] [2022-11-02 20:32:42,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364126278] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:32:42,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681908908] [2022-11-02 20:32:42,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:42,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:32:42,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:32:42,873 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:32:42,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:32:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:44,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:32:44,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:44,324 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2022-11-02 20:32:44,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:32:44,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681908908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:44,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:32:44,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-02 20:32:44,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474356223] [2022-11-02 20:32:44,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:44,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:32:44,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:44,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:32:44,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:32:44,329 INFO L87 Difference]: Start difference. First operand 2411 states and 3583 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:44,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:44,548 INFO L93 Difference]: Finished difference Result 5281 states and 7867 transitions. [2022-11-02 20:32:44,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:32:44,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 294 [2022-11-02 20:32:44,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:44,560 INFO L225 Difference]: With dead ends: 5281 [2022-11-02 20:32:44,561 INFO L226 Difference]: Without dead ends: 2893 [2022-11-02 20:32:44,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:32:44,565 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 157 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:44,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 376 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:44,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2022-11-02 20:32:44,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 2893. [2022-11-02 20:32:44,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2893 states, 2892 states have (on average 1.4885892116182573) internal successors, (4305), 2892 states have internal predecessors, (4305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:44,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2893 states to 2893 states and 4305 transitions. [2022-11-02 20:32:44,726 INFO L78 Accepts]: Start accepts. Automaton has 2893 states and 4305 transitions. Word has length 294 [2022-11-02 20:32:44,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:44,728 INFO L495 AbstractCegarLoop]: Abstraction has 2893 states and 4305 transitions. [2022-11-02 20:32:44,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:44,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2893 states and 4305 transitions. [2022-11-02 20:32:44,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2022-11-02 20:32:44,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:44,738 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 20:32:44,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:32:44,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-11-02 20:32:44,965 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:44,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:44,966 INFO L85 PathProgramCache]: Analyzing trace with hash -142532707, now seen corresponding path program 1 times [2022-11-02 20:32:44,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:44,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435885437] [2022-11-02 20:32:44,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:44,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:46,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1244 backedges. 820 proven. 106 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-11-02 20:32:46,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:46,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435885437] [2022-11-02 20:32:46,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435885437] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:32:46,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264832906] [2022-11-02 20:32:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:46,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:32:46,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:32:46,466 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:32:46,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:32:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:47,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:32:47,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:47,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1244 backedges. 529 proven. 0 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-11-02 20:32:47,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:32:47,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264832906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:47,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:32:47,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-02 20:32:47,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612438329] [2022-11-02 20:32:47,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:47,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:32:47,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:47,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:32:47,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:32:47,912 INFO L87 Difference]: Start difference. First operand 2893 states and 4305 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:48,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:48,133 INFO L93 Difference]: Finished difference Result 6245 states and 9311 transitions. [2022-11-02 20:32:48,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:32:48,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 379 [2022-11-02 20:32:48,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:48,144 INFO L225 Difference]: With dead ends: 6245 [2022-11-02 20:32:48,145 INFO L226 Difference]: Without dead ends: 3375 [2022-11-02 20:32:48,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:32:48,149 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 154 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:48,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 375 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:48,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3375 states. [2022-11-02 20:32:48,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3375 to 3375. [2022-11-02 20:32:48,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3375 states, 3374 states have (on average 1.4902193242442205) internal successors, (5028), 3374 states have internal predecessors, (5028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:48,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3375 states to 3375 states and 5028 transitions. [2022-11-02 20:32:48,256 INFO L78 Accepts]: Start accepts. Automaton has 3375 states and 5028 transitions. Word has length 379 [2022-11-02 20:32:48,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:48,256 INFO L495 AbstractCegarLoop]: Abstraction has 3375 states and 5028 transitions. [2022-11-02 20:32:48,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:48,257 INFO L276 IsEmpty]: Start isEmpty. Operand 3375 states and 5028 transitions. [2022-11-02 20:32:48,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-11-02 20:32:48,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:48,262 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 20:32:48,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-02 20:32:48,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-11-02 20:32:48,462 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:48,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:48,463 INFO L85 PathProgramCache]: Analyzing trace with hash 180850149, now seen corresponding path program 1 times [2022-11-02 20:32:48,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:48,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979399655] [2022-11-02 20:32:48,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:48,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:49,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 995 proven. 106 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2022-11-02 20:32:49,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:49,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979399655] [2022-11-02 20:32:49,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979399655] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:32:49,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181517980] [2022-11-02 20:32:49,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:49,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:32:49,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:32:49,790 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:32:49,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:32:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:51,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 1964 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:32:51,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:51,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 311 proven. 0 refuted. 0 times theorem prover too weak. 1254 trivial. 0 not checked. [2022-11-02 20:32:51,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:32:51,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181517980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:51,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:32:51,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-02 20:32:51,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848688406] [2022-11-02 20:32:51,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:51,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:32:51,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:51,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:32:51,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:32:51,238 INFO L87 Difference]: Start difference. First operand 3375 states and 5028 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:51,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:51,465 INFO L93 Difference]: Finished difference Result 7204 states and 10750 transitions. [2022-11-02 20:32:51,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:32:51,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 422 [2022-11-02 20:32:51,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:51,478 INFO L225 Difference]: With dead ends: 7204 [2022-11-02 20:32:51,479 INFO L226 Difference]: Without dead ends: 3852 [2022-11-02 20:32:51,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:32:51,483 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 143 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:51,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 577 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:51,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3852 states. [2022-11-02 20:32:51,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3852 to 3852. [2022-11-02 20:32:51,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3852 states, 3851 states have (on average 1.4894832511036094) internal successors, (5736), 3851 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:51,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3852 states to 3852 states and 5736 transitions. [2022-11-02 20:32:51,658 INFO L78 Accepts]: Start accepts. Automaton has 3852 states and 5736 transitions. Word has length 422 [2022-11-02 20:32:51,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:51,659 INFO L495 AbstractCegarLoop]: Abstraction has 3852 states and 5736 transitions. [2022-11-02 20:32:51,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:51,660 INFO L276 IsEmpty]: Start isEmpty. Operand 3852 states and 5736 transitions. [2022-11-02 20:32:51,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2022-11-02 20:32:51,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:51,668 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 20:32:51,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:32:51,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:32:51,893 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:51,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:51,894 INFO L85 PathProgramCache]: Analyzing trace with hash -676054420, now seen corresponding path program 1 times [2022-11-02 20:32:51,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:51,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599816163] [2022-11-02 20:32:51,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:51,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:52,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 1003 proven. 0 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2022-11-02 20:32:52,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:52,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599816163] [2022-11-02 20:32:52,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599816163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:52,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:52,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:32:52,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590255406] [2022-11-02 20:32:52,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:52,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:32:52,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:52,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:32:52,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:32:52,627 INFO L87 Difference]: Start difference. First operand 3852 states and 5736 transitions. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:54,636 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 [] [2022-11-02 20:32:55,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:55,306 INFO L93 Difference]: Finished difference Result 8334 states and 12347 transitions. [2022-11-02 20:32:55,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:32:55,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 423 [2022-11-02 20:32:55,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:55,317 INFO L225 Difference]: With dead ends: 8334 [2022-11-02 20:32:55,317 INFO L226 Difference]: Without dead ends: 4505 [2022-11-02 20:32:55,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:55,322 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 62 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:55,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 659 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 236 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-02 20:32:55,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4505 states. [2022-11-02 20:32:55,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4505 to 4180. [2022-11-02 20:32:55,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4180 states, 4179 states have (on average 1.4893515195022733) internal successors, (6224), 4179 states have internal predecessors, (6224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:55,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4180 states to 4180 states and 6224 transitions. [2022-11-02 20:32:55,459 INFO L78 Accepts]: Start accepts. Automaton has 4180 states and 6224 transitions. Word has length 423 [2022-11-02 20:32:55,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:55,460 INFO L495 AbstractCegarLoop]: Abstraction has 4180 states and 6224 transitions. [2022-11-02 20:32:55,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:55,461 INFO L276 IsEmpty]: Start isEmpty. Operand 4180 states and 6224 transitions. [2022-11-02 20:32:55,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2022-11-02 20:32:55,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:55,469 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 20:32:55,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-02 20:32:55,470 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:55,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:55,471 INFO L85 PathProgramCache]: Analyzing trace with hash -2009734672, now seen corresponding path program 1 times [2022-11-02 20:32:55,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:55,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722686536] [2022-11-02 20:32:55,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:55,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:55,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 600 proven. 0 refuted. 0 times theorem prover too weak. 965 trivial. 0 not checked. [2022-11-02 20:32:55,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:55,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722686536] [2022-11-02 20:32:55,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722686536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:55,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:55,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:32:55,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058832205] [2022-11-02 20:32:55,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:55,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:32:55,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:55,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:32:55,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:55,776 INFO L87 Difference]: Start difference. First operand 4180 states and 6224 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:56,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:56,033 INFO L93 Difference]: Finished difference Result 8823 states and 13154 transitions. [2022-11-02 20:32:56,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:32:56,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 423 [2022-11-02 20:32:56,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:56,044 INFO L225 Difference]: With dead ends: 8823 [2022-11-02 20:32:56,045 INFO L226 Difference]: Without dead ends: 4666 [2022-11-02 20:32:56,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:56,050 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 140 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:56,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 577 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:56,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4666 states. [2022-11-02 20:32:56,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4666 to 4666. [2022-11-02 20:32:56,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4666 states, 4665 states have (on average 1.4885316184351554) internal successors, (6944), 4665 states have internal predecessors, (6944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:56,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4666 states to 4666 states and 6944 transitions. [2022-11-02 20:32:56,261 INFO L78 Accepts]: Start accepts. Automaton has 4666 states and 6944 transitions. Word has length 423 [2022-11-02 20:32:56,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:56,262 INFO L495 AbstractCegarLoop]: Abstraction has 4666 states and 6944 transitions. [2022-11-02 20:32:56,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:56,262 INFO L276 IsEmpty]: Start isEmpty. Operand 4666 states and 6944 transitions. [2022-11-02 20:32:56,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2022-11-02 20:32:56,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:56,273 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 20:32:56,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-02 20:32:56,273 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:56,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:56,274 INFO L85 PathProgramCache]: Analyzing trace with hash -61188847, now seen corresponding path program 1 times [2022-11-02 20:32:56,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:56,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743788817] [2022-11-02 20:32:56,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:56,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:56,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2318 backedges. 753 proven. 0 refuted. 0 times theorem prover too weak. 1565 trivial. 0 not checked. [2022-11-02 20:32:56,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:56,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743788817] [2022-11-02 20:32:56,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743788817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:56,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:56,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:32:56,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668632594] [2022-11-02 20:32:56,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:56,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:32:56,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:56,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:32:56,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:56,667 INFO L87 Difference]: Start difference. First operand 4666 states and 6944 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:56,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:56,927 INFO L93 Difference]: Finished difference Result 9832 states and 14650 transitions. [2022-11-02 20:32:56,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:32:56,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 509 [2022-11-02 20:32:56,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:56,940 INFO L225 Difference]: With dead ends: 9832 [2022-11-02 20:32:56,941 INFO L226 Difference]: Without dead ends: 5189 [2022-11-02 20:32:56,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:32:56,945 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 153 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:56,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 372 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:56,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5189 states. [2022-11-02 20:32:57,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5189 to 5189. [2022-11-02 20:32:57,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5189 states, 5188 states have (on average 1.4901696222050886) internal successors, (7731), 5188 states have internal predecessors, (7731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:57,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 7731 transitions. [2022-11-02 20:32:57,178 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 7731 transitions. Word has length 509 [2022-11-02 20:32:57,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:57,179 INFO L495 AbstractCegarLoop]: Abstraction has 5189 states and 7731 transitions. [2022-11-02 20:32:57,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:57,180 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 7731 transitions. [2022-11-02 20:32:57,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2022-11-02 20:32:57,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:57,191 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:32:57,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-02 20:32:57,191 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:57,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:57,192 INFO L85 PathProgramCache]: Analyzing trace with hash 600999647, now seen corresponding path program 1 times [2022-11-02 20:32:57,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:57,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337275037] [2022-11-02 20:32:57,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:57,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:00,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 1400 proven. 48 refuted. 0 times theorem prover too weak. 1304 trivial. 0 not checked. [2022-11-02 20:33:00,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:33:00,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337275037] [2022-11-02 20:33:00,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337275037] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:33:00,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577687022] [2022-11-02 20:33:00,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:00,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:33:00,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:33:00,298 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:33:00,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:33:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:01,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 2422 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-02 20:33:02,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:02,052 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-02 20:33:02,219 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:33:02,220 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 10 [2022-11-02 20:33:02,330 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:33:02,330 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-11-02 20:33:02,357 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-02 20:33:02,408 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-11-02 20:33:02,414 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2022-11-02 20:33:02,475 INFO L356 Elim1Store]: treesize reduction 40, result has 49.4 percent of original size [2022-11-02 20:33:02,476 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 55 [2022-11-02 20:33:02,556 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:33:02,556 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-11-02 20:33:02,866 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:33:02,866 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 11 [2022-11-02 20:33:02,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 1394 proven. 204 refuted. 0 times theorem prover too weak. 1154 trivial. 0 not checked. [2022-11-02 20:33:02,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:03,116 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 53 [2022-11-02 20:33:03,120 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 41 [2022-11-02 20:33:05,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2022-11-02 20:33:05,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 1392 proven. 0 refuted. 0 times theorem prover too weak. 1360 trivial. 0 not checked. [2022-11-02 20:33:05,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577687022] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:33:05,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:33:05,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 14] total 20 [2022-11-02 20:33:05,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773089816] [2022-11-02 20:33:05,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:05,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:33:05,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:33:05,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:33:05,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:33:05,260 INFO L87 Difference]: Start difference. First operand 5189 states and 7731 transitions. Second operand has 7 states, 7 states have (on average 27.142857142857142) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:07,285 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 [] [2022-11-02 20:33:13,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:13,996 INFO L93 Difference]: Finished difference Result 14067 states and 20912 transitions. [2022-11-02 20:33:13,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:33:13,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 27.142857142857142) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 553 [2022-11-02 20:33:13,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:14,016 INFO L225 Difference]: With dead ends: 14067 [2022-11-02 20:33:14,017 INFO L226 Difference]: Without dead ends: 8901 [2022-11-02 20:33:14,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1120 GetRequests, 1098 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:33:14,024 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 408 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 114 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 269 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:14,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 893 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 538 Invalid, 1 Unknown, 269 Unchecked, 4.1s Time] [2022-11-02 20:33:14,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8901 states. [2022-11-02 20:33:14,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8901 to 7594. [2022-11-02 20:33:14,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7594 states, 7593 states have (on average 1.5029632556301857) internal successors, (11412), 7593 states have internal predecessors, (11412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:14,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7594 states to 7594 states and 11412 transitions. [2022-11-02 20:33:14,421 INFO L78 Accepts]: Start accepts. Automaton has 7594 states and 11412 transitions. Word has length 553 [2022-11-02 20:33:14,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:14,422 INFO L495 AbstractCegarLoop]: Abstraction has 7594 states and 11412 transitions. [2022-11-02 20:33:14,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.142857142857142) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:14,422 INFO L276 IsEmpty]: Start isEmpty. Operand 7594 states and 11412 transitions. [2022-11-02 20:33:14,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2022-11-02 20:33:14,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:14,437 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:14,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:14,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-11-02 20:33:14,652 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:14,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:14,653 INFO L85 PathProgramCache]: Analyzing trace with hash -2030253142, now seen corresponding path program 1 times [2022-11-02 20:33:14,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:14,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206302514] [2022-11-02 20:33:14,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:14,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:15,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2767 backedges. 1532 proven. 0 refuted. 0 times theorem prover too weak. 1235 trivial. 0 not checked. [2022-11-02 20:33:15,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:33:15,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206302514] [2022-11-02 20:33:15,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206302514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:15,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:15,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:15,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439364399] [2022-11-02 20:33:15,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:15,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:15,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:33:15,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:15,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:15,930 INFO L87 Difference]: Start difference. First operand 7594 states and 11412 transitions. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:17,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:17,029 INFO L93 Difference]: Finished difference Result 15687 states and 23455 transitions. [2022-11-02 20:33:17,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:33:17,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 556 [2022-11-02 20:33:17,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:17,047 INFO L225 Difference]: With dead ends: 15687 [2022-11-02 20:33:17,047 INFO L226 Difference]: Without dead ends: 8116 [2022-11-02 20:33:17,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:17,056 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 60 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:17,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 657 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:33:17,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8116 states. [2022-11-02 20:33:17,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8116 to 7604. [2022-11-02 20:33:17,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7604 states, 7603 states have (on average 1.5023017230040774) internal successors, (11422), 7603 states have internal predecessors, (11422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:17,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7604 states to 7604 states and 11422 transitions. [2022-11-02 20:33:17,486 INFO L78 Accepts]: Start accepts. Automaton has 7604 states and 11422 transitions. Word has length 556 [2022-11-02 20:33:17,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:17,486 INFO L495 AbstractCegarLoop]: Abstraction has 7604 states and 11422 transitions. [2022-11-02 20:33:17,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:17,487 INFO L276 IsEmpty]: Start isEmpty. Operand 7604 states and 11422 transitions. [2022-11-02 20:33:17,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2022-11-02 20:33:17,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:17,502 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 15, 15, 15, 15, 15, 15, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 11, 11, 11, 11, 11, 11, 11, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 20:33:17,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-02 20:33:17,503 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:17,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:17,504 INFO L85 PathProgramCache]: Analyzing trace with hash -491957639, now seen corresponding path program 1 times [2022-11-02 20:33:17,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:17,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034790570] [2022-11-02 20:33:17,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:17,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:18,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3228 backedges. 1848 proven. 21 refuted. 0 times theorem prover too weak. 1359 trivial. 0 not checked. [2022-11-02 20:33:18,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:33:18,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034790570] [2022-11-02 20:33:18,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034790570] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:33:18,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876131217] [2022-11-02 20:33:18,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:18,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:33:18,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:33:18,638 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:33:18,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:33:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:20,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 2672 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:33:20,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:20,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3228 backedges. 2175 proven. 0 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2022-11-02 20:33:20,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:20,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876131217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:20,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:33:20,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-02 20:33:20,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085540151] [2022-11-02 20:33:20,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:20,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:33:20,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:33:20,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:33:20,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:33:20,594 INFO L87 Difference]: Start difference. First operand 7604 states and 11422 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:21,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:21,060 INFO L93 Difference]: Finished difference Result 16102 states and 24204 transitions. [2022-11-02 20:33:21,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:33:21,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 598 [2022-11-02 20:33:21,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:21,071 INFO L225 Difference]: With dead ends: 16102 [2022-11-02 20:33:21,071 INFO L226 Difference]: Without dead ends: 8521 [2022-11-02 20:33:21,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:33:21,077 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 154 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:21,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 377 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:33:21,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8521 states. [2022-11-02 20:33:21,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8521 to 8521. [2022-11-02 20:33:21,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8521 states, 8520 states have (on average 1.503169014084507) internal successors, (12807), 8520 states have internal predecessors, (12807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:21,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8521 states to 8521 states and 12807 transitions. [2022-11-02 20:33:21,438 INFO L78 Accepts]: Start accepts. Automaton has 8521 states and 12807 transitions. Word has length 598 [2022-11-02 20:33:21,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:21,439 INFO L495 AbstractCegarLoop]: Abstraction has 8521 states and 12807 transitions. [2022-11-02 20:33:21,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:21,439 INFO L276 IsEmpty]: Start isEmpty. Operand 8521 states and 12807 transitions. [2022-11-02 20:33:21,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2022-11-02 20:33:21,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:21,452 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 14, 14, 14, 14, 14, 14, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:21,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:21,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2022-11-02 20:33:21,653 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:21,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:21,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1880698354, now seen corresponding path program 1 times [2022-11-02 20:33:21,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:21,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618475124] [2022-11-02 20:33:21,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:21,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:22,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3127 backedges. 1441 proven. 0 refuted. 0 times theorem prover too weak. 1686 trivial. 0 not checked. [2022-11-02 20:33:22,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:33:22,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618475124] [2022-11-02 20:33:22,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618475124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:22,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:22,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:22,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587367218] [2022-11-02 20:33:22,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:22,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:22,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:33:22,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:22,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:22,795 INFO L87 Difference]: Start difference. First operand 8521 states and 12807 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:24,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:33:25,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:25,426 INFO L93 Difference]: Finished difference Result 17481 states and 26170 transitions. [2022-11-02 20:33:25,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:33:25,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 601 [2022-11-02 20:33:25,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:25,436 INFO L225 Difference]: With dead ends: 17481 [2022-11-02 20:33:25,436 INFO L226 Difference]: Without dead ends: 8983 [2022-11-02 20:33:25,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:25,444 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 81 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:25,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 643 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 20:33:25,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8983 states. [2022-11-02 20:33:25,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8983 to 8521. [2022-11-02 20:33:25,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8521 states, 8520 states have (on average 1.501056338028169) internal successors, (12789), 8520 states have internal predecessors, (12789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:25,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8521 states to 8521 states and 12789 transitions. [2022-11-02 20:33:25,871 INFO L78 Accepts]: Start accepts. Automaton has 8521 states and 12789 transitions. Word has length 601 [2022-11-02 20:33:25,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:25,872 INFO L495 AbstractCegarLoop]: Abstraction has 8521 states and 12789 transitions. [2022-11-02 20:33:25,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:25,872 INFO L276 IsEmpty]: Start isEmpty. Operand 8521 states and 12789 transitions. [2022-11-02 20:33:25,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2022-11-02 20:33:25,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:25,887 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:25,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-02 20:33:25,888 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:25,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:25,889 INFO L85 PathProgramCache]: Analyzing trace with hash 104446311, now seen corresponding path program 1 times [2022-11-02 20:33:25,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:25,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143248981] [2022-11-02 20:33:25,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:25,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:26,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3529 backedges. 1681 proven. 0 refuted. 0 times theorem prover too weak. 1848 trivial. 0 not checked. [2022-11-02 20:33:26,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:33:26,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143248981] [2022-11-02 20:33:26,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143248981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:26,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:26,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:26,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086951641] [2022-11-02 20:33:26,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:26,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:26,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:33:26,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:26,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:26,737 INFO L87 Difference]: Start difference. First operand 8521 states and 12789 transitions. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:28,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:28,285 INFO L93 Difference]: Finished difference Result 17481 states and 26134 transitions. [2022-11-02 20:33:28,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:33:28,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 619 [2022-11-02 20:33:28,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:28,298 INFO L225 Difference]: With dead ends: 17481 [2022-11-02 20:33:28,298 INFO L226 Difference]: Without dead ends: 8983 [2022-11-02 20:33:28,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:28,304 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 71 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:28,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 641 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 20:33:28,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8983 states. [2022-11-02 20:33:28,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8983 to 8521. [2022-11-02 20:33:28,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8521 states, 8520 states have (on average 1.498943661971831) internal successors, (12771), 8520 states have internal predecessors, (12771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:28,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8521 states to 8521 states and 12771 transitions. [2022-11-02 20:33:28,600 INFO L78 Accepts]: Start accepts. Automaton has 8521 states and 12771 transitions. Word has length 619 [2022-11-02 20:33:28,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:28,601 INFO L495 AbstractCegarLoop]: Abstraction has 8521 states and 12771 transitions. [2022-11-02 20:33:28,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:28,601 INFO L276 IsEmpty]: Start isEmpty. Operand 8521 states and 12771 transitions. [2022-11-02 20:33:28,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2022-11-02 20:33:28,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:28,616 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 15, 15, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:28,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-02 20:33:28,617 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:28,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:28,618 INFO L85 PathProgramCache]: Analyzing trace with hash 2144528921, now seen corresponding path program 1 times [2022-11-02 20:33:28,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:28,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366136255] [2022-11-02 20:33:28,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:28,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:29,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3586 backedges. 1931 proven. 46 refuted. 0 times theorem prover too weak. 1609 trivial. 0 not checked. [2022-11-02 20:33:29,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:33:29,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366136255] [2022-11-02 20:33:29,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366136255] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:33:29,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375643548] [2022-11-02 20:33:29,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:29,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:33:29,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:33:29,606 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:33:29,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:33:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:31,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 2689 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-02 20:33:31,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:31,355 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-02 20:33:31,418 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:33:31,418 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-11-02 20:33:31,467 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-11-02 20:33:31,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-02 20:33:31,610 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-02 20:33:31,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3586 backedges. 1926 proven. 126 refuted. 0 times theorem prover too weak. 1534 trivial. 0 not checked. [2022-11-02 20:33:31,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:31,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3586 backedges. 1947 proven. 0 refuted. 0 times theorem prover too weak. 1639 trivial. 0 not checked. [2022-11-02 20:33:31,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375643548] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:33:31,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:33:31,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 8] total 10 [2022-11-02 20:33:31,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280665712] [2022-11-02 20:33:31,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:31,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:31,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:33:31,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:31,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:33:31,794 INFO L87 Difference]: Start difference. First operand 8521 states and 12771 transitions. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:33,112 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 [] [2022-11-02 20:33:34,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:34,044 INFO L93 Difference]: Finished difference Result 18216 states and 27145 transitions. [2022-11-02 20:33:34,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:33:34,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 619 [2022-11-02 20:33:34,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:34,054 INFO L225 Difference]: With dead ends: 18216 [2022-11-02 20:33:34,054 INFO L226 Difference]: Without dead ends: 9718 [2022-11-02 20:33:34,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1245 GetRequests, 1236 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:33:34,060 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 116 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:34,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 481 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-02 20:33:34,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9718 states. [2022-11-02 20:33:34,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9718 to 8532. [2022-11-02 20:33:34,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8532 states, 8531 states have (on average 1.498300316492791) internal successors, (12782), 8531 states have internal predecessors, (12782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:34,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8532 states to 8532 states and 12782 transitions. [2022-11-02 20:33:34,416 INFO L78 Accepts]: Start accepts. Automaton has 8532 states and 12782 transitions. Word has length 619 [2022-11-02 20:33:34,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:34,417 INFO L495 AbstractCegarLoop]: Abstraction has 8532 states and 12782 transitions. [2022-11-02 20:33:34,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:34,417 INFO L276 IsEmpty]: Start isEmpty. Operand 8532 states and 12782 transitions. [2022-11-02 20:33:34,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2022-11-02 20:33:34,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:34,427 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 15, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:34,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:34,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_188a1bb4-5d70-40e8-bc4d-4a6c04b04eee/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-11-02 20:33:34,628 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:34,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:34,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1851564773, now seen corresponding path program 1 times [2022-11-02 20:33:34,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:34,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570728951] [2022-11-02 20:33:34,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:34,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3568 backedges. 1701 proven. 0 refuted. 0 times theorem prover too weak. 1867 trivial. 0 not checked. [2022-11-02 20:33:35,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:33:35,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570728951] [2022-11-02 20:33:35,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570728951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:35,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:35,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:35,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612027630] [2022-11-02 20:33:35,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:35,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:35,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:33:35,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:35,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:35,479 INFO L87 Difference]: Start difference. First operand 8532 states and 12782 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:37,489 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 [] [2022-11-02 20:33:38,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:38,235 INFO L93 Difference]: Finished difference Result 17431 states and 26018 transitions. [2022-11-02 20:33:38,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:33:38,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 622 [2022-11-02 20:33:38,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:38,244 INFO L225 Difference]: With dead ends: 17431 [2022-11-02 20:33:38,245 INFO L226 Difference]: Without dead ends: 8922 [2022-11-02 20:33:38,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:38,251 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 65 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:38,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 633 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-02 20:33:38,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8922 states. [2022-11-02 20:33:38,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8922 to 8532. [2022-11-02 20:33:38,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8532 states, 8531 states have (on average 1.4961903645528074) internal successors, (12764), 8531 states have internal predecessors, (12764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:38,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8532 states to 8532 states and 12764 transitions. [2022-11-02 20:33:38,692 INFO L78 Accepts]: Start accepts. Automaton has 8532 states and 12764 transitions. Word has length 622 [2022-11-02 20:33:38,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:38,692 INFO L495 AbstractCegarLoop]: Abstraction has 8532 states and 12764 transitions. [2022-11-02 20:33:38,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:38,693 INFO L276 IsEmpty]: Start isEmpty. Operand 8532 states and 12764 transitions. [2022-11-02 20:33:38,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2022-11-02 20:33:38,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:38,702 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 15, 15, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:38,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-02 20:33:38,702 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:38,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:38,704 INFO L85 PathProgramCache]: Analyzing trace with hash 777098214, now seen corresponding path program 1 times [2022-11-02 20:33:38,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:38,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687933572] [2022-11-02 20:33:38,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:38,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:39,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3601 backedges. 1836 proven. 0 refuted. 0 times theorem prover too weak. 1765 trivial. 0 not checked. [2022-11-02 20:33:39,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:33:39,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687933572] [2022-11-02 20:33:39,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687933572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:39,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:39,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:39,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102676626] [2022-11-02 20:33:39,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:39,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:39,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:33:39,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:39,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:39,376 INFO L87 Difference]: Start difference. First operand 8532 states and 12764 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:41,393 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 [] [2022-11-02 20:33:42,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:42,024 INFO L93 Difference]: Finished difference Result 17855 states and 26667 transitions. [2022-11-02 20:33:42,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:33:42,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 622 [2022-11-02 20:33:42,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:42,034 INFO L225 Difference]: With dead ends: 17855 [2022-11-02 20:33:42,034 INFO L226 Difference]: Without dead ends: 9346 [2022-11-02 20:33:42,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:42,042 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 36 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:42,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 587 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 181 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-02 20:33:42,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9346 states. [2022-11-02 20:33:42,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9346 to 9000. [2022-11-02 20:33:42,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9000 states, 8999 states have (on average 1.4963884876097344) internal successors, (13466), 8999 states have internal predecessors, (13466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:42,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 13466 transitions. [2022-11-02 20:33:42,439 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 13466 transitions. Word has length 622 [2022-11-02 20:33:42,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:42,439 INFO L495 AbstractCegarLoop]: Abstraction has 9000 states and 13466 transitions. [2022-11-02 20:33:42,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:42,439 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 13466 transitions. [2022-11-02 20:33:42,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2022-11-02 20:33:42,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:42,454 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 12, 12, 12, 12, 12, 12, 12, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:42,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-02 20:33:42,455 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:42,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:42,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1689715661, now seen corresponding path program 1 times [2022-11-02 20:33:42,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:42,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946105466] [2022-11-02 20:33:42,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:42,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:45,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3895 backedges. 1991 proven. 0 refuted. 0 times theorem prover too weak. 1904 trivial. 0 not checked. [2022-11-02 20:33:45,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:33:45,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946105466] [2022-11-02 20:33:45,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946105466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:45,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:45,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:33:45,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155152821] [2022-11-02 20:33:45,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:45,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:33:45,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:33:45,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:33:45,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:45,880 INFO L87 Difference]: Start difference. First operand 9000 states and 13466 transitions. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:47,898 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 [] [2022-11-02 20:33:49,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:49,990 INFO L93 Difference]: Finished difference Result 22163 states and 33133 transitions. [2022-11-02 20:33:49,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:33:49,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 640 [2022-11-02 20:33:49,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:50,004 INFO L225 Difference]: With dead ends: 22163 [2022-11-02 20:33:50,005 INFO L226 Difference]: Without dead ends: 13186 [2022-11-02 20:33:50,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:33:50,013 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 112 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:50,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 948 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 481 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-11-02 20:33:50,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13186 states. [2022-11-02 20:33:50,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13186 to 9970. [2022-11-02 20:33:50,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9970 states, 9969 states have (on average 1.490921857759053) internal successors, (14863), 9969 states have internal predecessors, (14863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:50,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9970 states to 9970 states and 14863 transitions. [2022-11-02 20:33:50,441 INFO L78 Accepts]: Start accepts. Automaton has 9970 states and 14863 transitions. Word has length 640 [2022-11-02 20:33:50,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:50,442 INFO L495 AbstractCegarLoop]: Abstraction has 9970 states and 14863 transitions. [2022-11-02 20:33:50,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:50,442 INFO L276 IsEmpty]: Start isEmpty. Operand 9970 states and 14863 transitions. [2022-11-02 20:33:50,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2022-11-02 20:33:50,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:50,460 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:50,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-11-02 20:33:50,461 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:50,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:50,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1862113509, now seen corresponding path program 1 times [2022-11-02 20:33:50,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:50,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764920677] [2022-11-02 20:33:50,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:50,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:51,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3691 backedges. 1898 proven. 0 refuted. 0 times theorem prover too weak. 1793 trivial. 0 not checked. [2022-11-02 20:33:51,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:33:51,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764920677] [2022-11-02 20:33:51,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764920677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:51,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:51,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:51,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517443940] [2022-11-02 20:33:51,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:51,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:51,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:33:51,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:51,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:51,427 INFO L87 Difference]: Start difference. First operand 9970 states and 14863 transitions. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:53,443 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 [] [2022-11-02 20:33:54,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:54,151 INFO L93 Difference]: Finished difference Result 20449 states and 30437 transitions. [2022-11-02 20:33:54,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:33:54,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 640 [2022-11-02 20:33:54,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:54,161 INFO L225 Difference]: With dead ends: 20449 [2022-11-02 20:33:54,161 INFO L226 Difference]: Without dead ends: 10502 [2022-11-02 20:33:54,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:54,168 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 47 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:54,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 598 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 204 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-02 20:33:54,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10502 states. [2022-11-02 20:33:54,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10502 to 9970. [2022-11-02 20:33:54,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9970 states, 9969 states have (on average 1.4889156384792859) internal successors, (14843), 9969 states have internal predecessors, (14843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:54,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9970 states to 9970 states and 14843 transitions. [2022-11-02 20:33:54,568 INFO L78 Accepts]: Start accepts. Automaton has 9970 states and 14843 transitions. Word has length 640 [2022-11-02 20:33:54,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:54,568 INFO L495 AbstractCegarLoop]: Abstraction has 9970 states and 14843 transitions. [2022-11-02 20:33:54,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:54,569 INFO L276 IsEmpty]: Start isEmpty. Operand 9970 states and 14843 transitions. [2022-11-02 20:33:54,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2022-11-02 20:33:54,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:54,579 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:54,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-11-02 20:33:54,580 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:54,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:54,580 INFO L85 PathProgramCache]: Analyzing trace with hash 819285376, now seen corresponding path program 1 times [2022-11-02 20:33:54,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:54,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697115210] [2022-11-02 20:33:54,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:54,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:55,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3871 backedges. 2015 proven. 0 refuted. 0 times theorem prover too weak. 1856 trivial. 0 not checked. [2022-11-02 20:33:55,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:33:55,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697115210] [2022-11-02 20:33:55,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697115210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:55,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:55,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:55,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334992255] [2022-11-02 20:33:55,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:55,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:55,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:33:55,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:55,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:55,570 INFO L87 Difference]: Start difference. First operand 9970 states and 14843 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:56,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:56,968 INFO L93 Difference]: Finished difference Result 21029 states and 31237 transitions. [2022-11-02 20:33:56,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:33:56,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 640 [2022-11-02 20:33:56,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:56,980 INFO L225 Difference]: With dead ends: 21029 [2022-11-02 20:33:56,980 INFO L226 Difference]: Without dead ends: 11082 [2022-11-02 20:33:56,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:56,987 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 41 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:56,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 619 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:33:56,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11082 states. [2022-11-02 20:33:57,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11082 to 10610. [2022-11-02 20:33:57,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10610 states, 10609 states have (on average 1.489584315204072) internal successors, (15803), 10609 states have internal predecessors, (15803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:57,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10610 states to 10610 states and 15803 transitions. [2022-11-02 20:33:57,424 INFO L78 Accepts]: Start accepts. Automaton has 10610 states and 15803 transitions. Word has length 640 [2022-11-02 20:33:57,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:57,425 INFO L495 AbstractCegarLoop]: Abstraction has 10610 states and 15803 transitions. [2022-11-02 20:33:57,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:57,425 INFO L276 IsEmpty]: Start isEmpty. Operand 10610 states and 15803 transitions. [2022-11-02 20:33:57,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2022-11-02 20:33:57,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:57,436 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 12, 12, 12, 12, 12, 12, 12, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:57,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-11-02 20:33:57,436 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:57,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:57,437 INFO L85 PathProgramCache]: Analyzing trace with hash 430388367, now seen corresponding path program 1 times [2022-11-02 20:33:57,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:57,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829402867] [2022-11-02 20:33:57,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:57,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:02,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3895 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3895 trivial. 0 not checked. [2022-11-02 20:34:02,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:02,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829402867] [2022-11-02 20:34:02,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829402867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:02,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:02,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:34:02,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131062893] [2022-11-02 20:34:02,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:02,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:02,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:02,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:02,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:02,344 INFO L87 Difference]: Start difference. First operand 10610 states and 15803 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:05,042 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 [] [2022-11-02 20:34:05,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:05,734 INFO L93 Difference]: Finished difference Result 21217 states and 31602 transitions. [2022-11-02 20:34:05,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:34:05,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 640 [2022-11-02 20:34:05,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:05,745 INFO L225 Difference]: With dead ends: 21217 [2022-11-02 20:34:05,745 INFO L226 Difference]: Without dead ends: 10610 [2022-11-02 20:34:05,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:34:05,752 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 7 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:05,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 703 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-11-02 20:34:05,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10610 states. [2022-11-02 20:34:06,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10610 to 10610. [2022-11-02 20:34:06,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10610 states, 10609 states have (on average 1.4894900556131587) internal successors, (15802), 10609 states have internal predecessors, (15802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:06,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10610 states to 10610 states and 15802 transitions. [2022-11-02 20:34:06,070 INFO L78 Accepts]: Start accepts. Automaton has 10610 states and 15802 transitions. Word has length 640 [2022-11-02 20:34:06,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:06,070 INFO L495 AbstractCegarLoop]: Abstraction has 10610 states and 15802 transitions. [2022-11-02 20:34:06,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:06,071 INFO L276 IsEmpty]: Start isEmpty. Operand 10610 states and 15802 transitions. [2022-11-02 20:34:06,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2022-11-02 20:34:06,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:06,081 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 12, 12, 12, 12, 12, 12, 12, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:06,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-11-02 20:34:06,081 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:06,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:06,081 INFO L85 PathProgramCache]: Analyzing trace with hash -582769715, now seen corresponding path program 1 times [2022-11-02 20:34:06,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:06,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719048080] [2022-11-02 20:34:06,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:06,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:07,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat