./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_clnt.blast.02.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c863c734-d4d6-46a8-a82c-2585895edab7/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c863c734-d4d6-46a8-a82c-2585895edab7/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c863c734-d4d6-46a8-a82c-2585895edab7/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c863c734-d4d6-46a8-a82c-2585895edab7/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_clnt.blast.02.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c863c734-d4d6-46a8-a82c-2585895edab7/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c863c734-d4d6-46a8-a82c-2585895edab7/bin/uautomizer-J5u9QxTXDZ --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 b0edcf84130f28de31dd252113e98a7277e8f803d45945a4e4ab5373cd867bd6 --- 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-dbf71c6-m [2022-10-17 10:40:17,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:40:17,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:40:17,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:40:17,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:40:17,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:40:17,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:40:17,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:40:17,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:40:17,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:40:17,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:40:17,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:40:17,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:40:17,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:40:17,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:40:17,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:40:17,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:40:17,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:40:17,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:40:17,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:40:17,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:40:17,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:40:17,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:40:17,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:40:17,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:40:17,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:40:17,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:40:17,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:40:17,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:40:17,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:40:17,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:40:17,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:40:17,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:40:17,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:40:17,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:40:17,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:40:17,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:40:17,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:40:17,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:40:17,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:40:17,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:40:17,984 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c863c734-d4d6-46a8-a82c-2585895edab7/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:40:18,042 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:40:18,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:40:18,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:40:18,044 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:40:18,044 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:40:18,045 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:40:18,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:40:18,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:40:18,046 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:40:18,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:40:18,047 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:40:18,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:40:18,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:40:18,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:40:18,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:40:18,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:40:18,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:40:18,049 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:40:18,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:40:18,050 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:40:18,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:40:18,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:40:18,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:40:18,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:40:18,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:40:18,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:40:18,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:40:18,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:40:18,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:40:18,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:40:18,052 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:40:18,052 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:40:18,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:40:18,053 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_c863c734-d4d6-46a8-a82c-2585895edab7/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c863c734-d4d6-46a8-a82c-2585895edab7/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0edcf84130f28de31dd252113e98a7277e8f803d45945a4e4ab5373cd867bd6 [2022-10-17 10:40:18,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:40:18,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:40:18,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:40:18,351 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:40:18,353 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:40:18,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c863c734-d4d6-46a8-a82c-2585895edab7/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/openssl/s3_clnt.blast.02.i.cil-2.c [2022-10-17 10:40:18,432 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c863c734-d4d6-46a8-a82c-2585895edab7/bin/uautomizer-J5u9QxTXDZ/data/92de28450/c319dfad113a44c292c00b6e641eb31a/FLAG64819834a [2022-10-17 10:40:19,005 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:40:19,006 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c863c734-d4d6-46a8-a82c-2585895edab7/sv-benchmarks/c/openssl/s3_clnt.blast.02.i.cil-2.c [2022-10-17 10:40:19,027 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c863c734-d4d6-46a8-a82c-2585895edab7/bin/uautomizer-J5u9QxTXDZ/data/92de28450/c319dfad113a44c292c00b6e641eb31a/FLAG64819834a [2022-10-17 10:40:19,267 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c863c734-d4d6-46a8-a82c-2585895edab7/bin/uautomizer-J5u9QxTXDZ/data/92de28450/c319dfad113a44c292c00b6e641eb31a [2022-10-17 10:40:19,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:40:19,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:40:19,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:40:19,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:40:19,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:40:19,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:40:19" (1/1) ... [2022-10-17 10:40:19,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3814b92c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:19, skipping insertion in model container [2022-10-17 10:40:19,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:40:19" (1/1) ... [2022-10-17 10:40:19,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:40:19,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:40:19,727 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_c863c734-d4d6-46a8-a82c-2585895edab7/sv-benchmarks/c/openssl/s3_clnt.blast.02.i.cil-2.c[65398,65411] [2022-10-17 10:40:19,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:40:19,750 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:40:19,852 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_c863c734-d4d6-46a8-a82c-2585895edab7/sv-benchmarks/c/openssl/s3_clnt.blast.02.i.cil-2.c[65398,65411] [2022-10-17 10:40:19,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:40:19,886 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:40:19,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:19 WrapperNode [2022-10-17 10:40:19,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:40:19,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:40:19,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:40:19,888 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:40:19,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:19" (1/1) ... [2022-10-17 10:40:19,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:19" (1/1) ... [2022-10-17 10:40:20,006 INFO L138 Inliner]: procedures = 31, calls = 217, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 718 [2022-10-17 10:40:20,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:40:20,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:40:20,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:40:20,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:40:20,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:19" (1/1) ... [2022-10-17 10:40:20,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:19" (1/1) ... [2022-10-17 10:40:20,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:19" (1/1) ... [2022-10-17 10:40:20,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:19" (1/1) ... [2022-10-17 10:40:20,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:19" (1/1) ... [2022-10-17 10:40:20,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:19" (1/1) ... [2022-10-17 10:40:20,115 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:19" (1/1) ... [2022-10-17 10:40:20,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:19" (1/1) ... [2022-10-17 10:40:20,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:40:20,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:40:20,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:40:20,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:40:20,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:19" (1/1) ... [2022-10-17 10:40:20,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:40:20,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c863c734-d4d6-46a8-a82c-2585895edab7/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:40:20,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c863c734-d4d6-46a8-a82c-2585895edab7/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:40:20,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c863c734-d4d6-46a8-a82c-2585895edab7/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:40:20,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:40:20,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:40:20,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:40:20,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:40:20,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:40:20,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:40:20,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:40:20,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:40:20,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:40:20,487 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:40:20,490 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:40:20,511 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-17 10:40:23,570 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2022-10-17 10:40:23,570 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2022-10-17 10:40:23,571 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:40:23,579 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:40:23,579 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:40:23,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:40:23 BoogieIcfgContainer [2022-10-17 10:40:23,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:40:23,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:40:23,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:40:23,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:40:23,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:40:19" (1/3) ... [2022-10-17 10:40:23,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@629bcc7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:40:23, skipping insertion in model container [2022-10-17 10:40:23,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:19" (2/3) ... [2022-10-17 10:40:23,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@629bcc7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:40:23, skipping insertion in model container [2022-10-17 10:40:23,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:40:23" (3/3) ... [2022-10-17 10:40:23,590 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.02.i.cil-2.c [2022-10-17 10:40:23,609 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:40:23,610 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:40:23,666 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:40:23,673 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;@627e0f8c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:40:23,673 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:40:23,678 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 127 states have (on average 1.7086614173228347) internal successors, (217), 128 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:40:23,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-17 10:40:23,686 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:40:23,687 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] [2022-10-17 10:40:23,687 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:40:23,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:40:23,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1457695037, now seen corresponding path program 1 times [2022-10-17 10:40:23,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:40:23,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483247765] [2022-10-17 10:40:23,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:40:23,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:40:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:40:25,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:40:25,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:40:25,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483247765] [2022-10-17 10:40:25,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483247765] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:40:25,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:40:25,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:40:25,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165196863] [2022-10-17 10:40:25,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:40:25,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:40:25,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:40:25,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:40:25,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:40:25,363 INFO L87 Difference]: Start difference. First operand has 129 states, 127 states have (on average 1.7086614173228347) internal successors, (217), 128 states have internal predecessors, (217), 0 states have call successors, (0), 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 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:40:27,394 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 [] [2022-10-17 10:40:27,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:40:27,690 INFO L93 Difference]: Finished difference Result 255 states and 430 transitions. [2022-10-17 10:40:27,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:40:27,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-10-17 10:40:27,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:40:27,704 INFO L225 Difference]: With dead ends: 255 [2022-10-17 10:40:27,704 INFO L226 Difference]: Without dead ends: 116 [2022-10-17 10:40:27,711 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 [2022-10-17 10:40:27,721 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 7 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:40:27,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 530 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-10-17 10:40:27,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-10-17 10:40:27,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2022-10-17 10:40:27,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.5087719298245614) internal successors, (172), 114 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:40:27,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 172 transitions. [2022-10-17 10:40:27,772 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 172 transitions. Word has length 24 [2022-10-17 10:40:27,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:40:27,773 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 172 transitions. [2022-10-17 10:40:27,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:40:27,773 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 172 transitions. [2022-10-17 10:40:27,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-10-17 10:40:27,775 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:40:27,776 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] [2022-10-17 10:40:27,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:40:27,776 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:40:27,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:40:27,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1001988123, now seen corresponding path program 1 times [2022-10-17 10:40:27,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:40:27,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913488470] [2022-10-17 10:40:27,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:40:27,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:40:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:40:28,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 10:40:28,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:40:28,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913488470] [2022-10-17 10:40:28,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913488470] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:40:28,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:40:28,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:40:28,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723299757] [2022-10-17 10:40:28,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:40:28,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:40:28,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:40:28,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:40:28,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:40:28,192 INFO L87 Difference]: Start difference. First operand 115 states and 172 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:40:28,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:40:28,232 INFO L93 Difference]: Finished difference Result 320 states and 482 transitions. [2022-10-17 10:40:28,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:40:28,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-10-17 10:40:28,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:40:28,236 INFO L225 Difference]: With dead ends: 320 [2022-10-17 10:40:28,236 INFO L226 Difference]: Without dead ends: 215 [2022-10-17 10:40:28,237 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 [2022-10-17 10:40:28,238 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 123 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:40:28,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 311 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:40:28,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-10-17 10:40:28,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2022-10-17 10:40:28,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.4906542056074767) internal successors, (319), 214 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:40:28,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 319 transitions. [2022-10-17 10:40:28,266 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 319 transitions. Word has length 38 [2022-10-17 10:40:28,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:40:28,267 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 319 transitions. [2022-10-17 10:40:28,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:40:28,267 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 319 transitions. [2022-10-17 10:40:28,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-10-17 10:40:28,270 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:40:28,270 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-10-17 10:40:28,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:40:28,270 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:40:28,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:40:28,271 INFO L85 PathProgramCache]: Analyzing trace with hash 996888307, now seen corresponding path program 1 times [2022-10-17 10:40:28,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:40:28,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959344823] [2022-10-17 10:40:28,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:40:28,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:40:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:40:28,634 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 10:40:28,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:40:28,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959344823] [2022-10-17 10:40:28,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959344823] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:40:28,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:40:28,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:40:28,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016137962] [2022-10-17 10:40:28,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:40:28,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:40:28,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:40:28,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:40:28,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:40:28,637 INFO L87 Difference]: Start difference. First operand 215 states and 319 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:40:30,650 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 [] [2022-10-17 10:40:30,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:40:30,706 INFO L93 Difference]: Finished difference Result 420 states and 630 transitions. [2022-10-17 10:40:30,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:40:30,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 53 [2022-10-17 10:40:30,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:40:30,710 INFO L225 Difference]: With dead ends: 420 [2022-10-17 10:40:30,711 INFO L226 Difference]: Without dead ends: 315 [2022-10-17 10:40:30,712 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 [2022-10-17 10:40:30,713 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 124 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:40:30,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 460 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-10-17 10:40:30,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-10-17 10:40:30,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2022-10-17 10:40:30,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.484076433121019) internal successors, (466), 314 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:40:30,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 466 transitions. [2022-10-17 10:40:30,739 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 466 transitions. Word has length 53 [2022-10-17 10:40:30,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:40:30,739 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 466 transitions. [2022-10-17 10:40:30,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:40:30,740 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 466 transitions. [2022-10-17 10:40:30,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-10-17 10:40:30,744 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:40:30,744 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-17 10:40:30,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:40:30,745 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:40:30,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:40:30,746 INFO L85 PathProgramCache]: Analyzing trace with hash -973367758, now seen corresponding path program 1 times [2022-10-17 10:40:30,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:40:30,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138790888] [2022-10-17 10:40:30,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:40:30,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:40:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:40:31,653 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-17 10:40:31,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:40:31,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138790888] [2022-10-17 10:40:31,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138790888] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:40:31,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:40:31,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:40:31,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590054029] [2022-10-17 10:40:31,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:40:31,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:40:31,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:40:31,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:40:31,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:40:31,662 INFO L87 Difference]: Start difference. First operand 315 states and 466 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:40:33,676 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 [] [2022-10-17 10:40:34,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:40:34,166 INFO L93 Difference]: Finished difference Result 891 states and 1325 transitions. [2022-10-17 10:40:34,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:40:34,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 71 [2022-10-17 10:40:34,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:40:34,174 INFO L225 Difference]: With dead ends: 891 [2022-10-17 10:40:34,178 INFO L226 Difference]: Without dead ends: 586 [2022-10-17 10:40:34,182 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 [2022-10-17 10:40:34,185 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 107 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:40:34,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 265 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 210 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-10-17 10:40:34,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-10-17 10:40:34,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 387. [2022-10-17 10:40:34,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 1.5336787564766838) internal successors, (592), 386 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:40:34,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 592 transitions. [2022-10-17 10:40:34,261 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 592 transitions. Word has length 71 [2022-10-17 10:40:34,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:40:34,262 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 592 transitions. [2022-10-17 10:40:34,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:40:34,262 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 592 transitions. [2022-10-17 10:40:34,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-10-17 10:40:34,269 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:40:34,270 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-17 10:40:34,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:40:34,270 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:40:34,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:40:34,271 INFO L85 PathProgramCache]: Analyzing trace with hash -114315255, now seen corresponding path program 1 times [2022-10-17 10:40:34,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:40:34,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509860508] [2022-10-17 10:40:34,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:40:34,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:40:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:40:35,058 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-17 10:40:35,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:40:35,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509860508] [2022-10-17 10:40:35,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509860508] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:40:35,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:40:35,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:40:35,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43761387] [2022-10-17 10:40:35,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:40:35,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:40:35,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:40:35,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:40:35,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:40:35,063 INFO L87 Difference]: Start difference. First operand 387 states and 592 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) [2022-10-17 10:40:37,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:40:39,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:40:39,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:40:39,545 INFO L93 Difference]: Finished difference Result 941 states and 1438 transitions. [2022-10-17 10:40:39,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:40:39,546 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 72 [2022-10-17 10:40:39,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:40:39,550 INFO L225 Difference]: With dead ends: 941 [2022-10-17 10:40:39,550 INFO L226 Difference]: Without dead ends: 564 [2022-10-17 10:40:39,551 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 [2022-10-17 10:40:39,552 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 91 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:40:39,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 550 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 234 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2022-10-17 10:40:39,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-10-17 10:40:39,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 439. [2022-10-17 10:40:39,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 1.552511415525114) internal successors, (680), 438 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:40:39,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 680 transitions. [2022-10-17 10:40:39,578 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 680 transitions. Word has length 72 [2022-10-17 10:40:39,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:40:39,578 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 680 transitions. [2022-10-17 10:40:39,579 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) [2022-10-17 10:40:39,579 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 680 transitions. [2022-10-17 10:40:39,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-10-17 10:40:39,580 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:40:39,581 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-17 10:40:39,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:40:39,581 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:40:39,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:40:39,582 INFO L85 PathProgramCache]: Analyzing trace with hash 26233355, now seen corresponding path program 1 times [2022-10-17 10:40:39,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:40:39,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931315893] [2022-10-17 10:40:39,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:40:39,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:40:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:40:40,344 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-17 10:40:40,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:40:40,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931315893] [2022-10-17 10:40:40,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931315893] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:40:40,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:40:40,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:40:40,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755013637] [2022-10-17 10:40:40,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:40:40,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:40:40,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:40:40,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:40:40,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:40:40,350 INFO L87 Difference]: Start difference. First operand 439 states and 680 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) [2022-10-17 10:40:42,365 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 [] [2022-10-17 10:40:42,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:40:42,778 INFO L93 Difference]: Finished difference Result 1139 states and 1753 transitions. [2022-10-17 10:40:42,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:40:42,779 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 72 [2022-10-17 10:40:42,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:40:42,783 INFO L225 Difference]: With dead ends: 1139 [2022-10-17 10:40:42,784 INFO L226 Difference]: Without dead ends: 710 [2022-10-17 10:40:42,784 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 [2022-10-17 10:40:42,785 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 107 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:40:42,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 264 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 209 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-10-17 10:40:42,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-10-17 10:40:42,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 462. [2022-10-17 10:40:42,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 1.5704989154013016) internal successors, (724), 461 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) [2022-10-17 10:40:42,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 724 transitions. [2022-10-17 10:40:42,811 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 724 transitions. Word has length 72 [2022-10-17 10:40:42,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:40:42,811 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 724 transitions. [2022-10-17 10:40:42,812 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) [2022-10-17 10:40:42,812 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 724 transitions. [2022-10-17 10:40:42,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-10-17 10:40:42,813 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:40:42,814 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-10-17 10:40:42,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:40:42,814 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:40:42,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:40:42,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1848863885, now seen corresponding path program 1 times [2022-10-17 10:40:42,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:40:42,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803293196] [2022-10-17 10:40:42,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:40:42,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:40:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:40:43,516 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-17 10:40:43,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:40:43,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803293196] [2022-10-17 10:40:43,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803293196] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:40:43,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:40:43,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:40:43,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83114789] [2022-10-17 10:40:43,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:40:43,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:40:43,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:40:43,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:40:43,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:40:43,521 INFO L87 Difference]: Start difference. First operand 462 states and 724 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) [2022-10-17 10:40:45,534 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 [] [2022-10-17 10:40:47,548 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 [] [2022-10-17 10:40:48,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:40:48,035 INFO L93 Difference]: Finished difference Result 1091 states and 1700 transitions. [2022-10-17 10:40:48,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:40:48,036 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 92 [2022-10-17 10:40:48,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:40:48,040 INFO L225 Difference]: With dead ends: 1091 [2022-10-17 10:40:48,040 INFO L226 Difference]: Without dead ends: 639 [2022-10-17 10:40:48,041 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 [2022-10-17 10:40:48,042 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 93 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:40:48,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 550 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 234 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2022-10-17 10:40:48,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-10-17 10:40:48,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 508. [2022-10-17 10:40:48,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 507 states have (on average 1.581854043392505) internal successors, (802), 507 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:40:48,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 802 transitions. [2022-10-17 10:40:48,092 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 802 transitions. Word has length 92 [2022-10-17 10:40:48,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:40:48,093 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 802 transitions. [2022-10-17 10:40:48,093 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) [2022-10-17 10:40:48,093 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 802 transitions. [2022-10-17 10:40:48,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-10-17 10:40:48,095 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:40:48,095 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-10-17 10:40:48,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:40:48,096 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:40:48,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:40:48,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1552617073, now seen corresponding path program 1 times [2022-10-17 10:40:48,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:40:48,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018128778] [2022-10-17 10:40:48,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:40:48,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:40:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:40:48,770 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-17 10:40:48,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:40:48,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018128778] [2022-10-17 10:40:48,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018128778] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:40:48,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:40:48,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:40:48,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572124028] [2022-10-17 10:40:48,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:40:48,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:40:48,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:40:48,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:40:48,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:40:48,775 INFO L87 Difference]: Start difference. First operand 508 states and 802 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:40:50,787 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 [] [2022-10-17 10:40:52,800 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 [] [2022-10-17 10:40:53,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:40:53,129 INFO L93 Difference]: Finished difference Result 1091 states and 1717 transitions. [2022-10-17 10:40:53,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:40:53,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-10-17 10:40:53,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:40:53,134 INFO L225 Difference]: With dead ends: 1091 [2022-10-17 10:40:53,134 INFO L226 Difference]: Without dead ends: 593 [2022-10-17 10:40:53,135 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 [2022-10-17 10:40:53,136 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 40 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:40:53,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 494 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 146 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-10-17 10:40:53,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-10-17 10:40:53,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 548. [2022-10-17 10:40:53,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 547 states have (on average 1.5904936014625228) internal successors, (870), 547 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:40:53,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 870 transitions. [2022-10-17 10:40:53,197 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 870 transitions. Word has length 92 [2022-10-17 10:40:53,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:40:53,198 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 870 transitions. [2022-10-17 10:40:53,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:40:53,198 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 870 transitions. [2022-10-17 10:40:53,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-10-17 10:40:53,200 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:40:53,200 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:40:53,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:40:53,201 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:40:53,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:40:53,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1859686006, now seen corresponding path program 1 times [2022-10-17 10:40:53,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:40:53,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249658433] [2022-10-17 10:40:53,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:40:53,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:40:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:40:53,919 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-17 10:40:53,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:40:53,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249658433] [2022-10-17 10:40:53,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249658433] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:40:53,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:40:53,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:40:53,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384399320] [2022-10-17 10:40:53,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:40:53,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:40:53,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:40:53,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:40:53,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:40:53,922 INFO L87 Difference]: Start difference. First operand 548 states and 870 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)