./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.06.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7067e321-fe18-4fca-a1da-107d0b0151f8/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7067e321-fe18-4fca-a1da-107d0b0151f8/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7067e321-fe18-4fca-a1da-107d0b0151f8/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7067e321-fe18-4fca-a1da-107d0b0151f8/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.06.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7067e321-fe18-4fca-a1da-107d0b0151f8/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7067e321-fe18-4fca-a1da-107d0b0151f8/bin/uautomizer-vX5HgA9Q3a --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 4ff0d99c6257365cafb7459615c8e1194d53bcc0d71dc100705abd4bb2d65c37 --- 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-b5237d8 [2022-11-21 17:04:36,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:04:36,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:04:36,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:04:36,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:04:36,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:04:36,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:04:36,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:04:36,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:04:36,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:04:36,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:04:36,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:04:36,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:04:36,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:04:36,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:04:36,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:04:36,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:04:36,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:04:36,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:04:36,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:04:36,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:04:36,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:04:36,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:04:36,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:04:36,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:04:36,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:04:36,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:04:36,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:04:36,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:04:36,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:04:37,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:04:37,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:04:37,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:04:37,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:04:37,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:04:37,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:04:37,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:04:37,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:04:37,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:04:37,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:04:37,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:04:37,007 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7067e321-fe18-4fca-a1da-107d0b0151f8/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 17:04:37,036 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:04:37,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:04:37,040 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:04:37,040 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:04:37,041 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:04:37,041 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:04:37,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:04:37,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:04:37,042 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:04:37,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:04:37,043 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:04:37,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:04:37,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:04:37,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:04:37,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:04:37,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:04:37,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:04:37,045 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:04:37,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:04:37,045 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:04:37,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:04:37,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:04:37,046 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:04:37,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:04:37,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:04:37,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:04:37,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:04:37,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:04:37,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:04:37,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:04:37,048 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:04:37,048 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:04:37,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:04:37,049 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_7067e321-fe18-4fca-a1da-107d0b0151f8/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7067e321-fe18-4fca-a1da-107d0b0151f8/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ff0d99c6257365cafb7459615c8e1194d53bcc0d71dc100705abd4bb2d65c37 [2022-11-21 17:04:37,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:04:37,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:04:37,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:04:37,412 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:04:37,413 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:04:37,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7067e321-fe18-4fca-a1da-107d0b0151f8/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/systemc/token_ring.06.cil-1.c [2022-11-21 17:04:40,588 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:04:40,807 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:04:40,808 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7067e321-fe18-4fca-a1da-107d0b0151f8/sv-benchmarks/c/systemc/token_ring.06.cil-1.c [2022-11-21 17:04:40,819 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7067e321-fe18-4fca-a1da-107d0b0151f8/bin/uautomizer-vX5HgA9Q3a/data/427779d58/f7a25e156db14953abdcc5159191dab2/FLAG4a02ef6ff [2022-11-21 17:04:40,841 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7067e321-fe18-4fca-a1da-107d0b0151f8/bin/uautomizer-vX5HgA9Q3a/data/427779d58/f7a25e156db14953abdcc5159191dab2 [2022-11-21 17:04:40,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:04:40,851 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:04:40,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:04:40,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:04:40,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:04:40,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:04:40" (1/1) ... [2022-11-21 17:04:40,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b01bfa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:40, skipping insertion in model container [2022-11-21 17:04:40,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:04:40" (1/1) ... [2022-11-21 17:04:40,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:04:40,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:04:41,144 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7067e321-fe18-4fca-a1da-107d0b0151f8/sv-benchmarks/c/systemc/token_ring.06.cil-1.c[671,684] [2022-11-21 17:04:41,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:04:41,301 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:04:41,317 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7067e321-fe18-4fca-a1da-107d0b0151f8/sv-benchmarks/c/systemc/token_ring.06.cil-1.c[671,684] [2022-11-21 17:04:41,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:04:41,390 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:04:41,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:41 WrapperNode [2022-11-21 17:04:41,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:04:41,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:04:41,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:04:41,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:04:41,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:41" (1/1) ... [2022-11-21 17:04:41,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:41" (1/1) ... [2022-11-21 17:04:41,460 INFO L138 Inliner]: procedures = 40, calls = 50, calls flagged for inlining = 23, calls inlined = 23, statements flattened = 510 [2022-11-21 17:04:41,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:04:41,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:04:41,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:04:41,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:04:41,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:41" (1/1) ... [2022-11-21 17:04:41,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:41" (1/1) ... [2022-11-21 17:04:41,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:41" (1/1) ... [2022-11-21 17:04:41,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:41" (1/1) ... [2022-11-21 17:04:41,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:41" (1/1) ... [2022-11-21 17:04:41,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:41" (1/1) ... [2022-11-21 17:04:41,526 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:41" (1/1) ... [2022-11-21 17:04:41,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:41" (1/1) ... [2022-11-21 17:04:41,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:04:41,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:04:41,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:04:41,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:04:41,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:41" (1/1) ... [2022-11-21 17:04:41,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:04:41,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7067e321-fe18-4fca-a1da-107d0b0151f8/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:04:41,582 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7067e321-fe18-4fca-a1da-107d0b0151f8/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:04:41,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7067e321-fe18-4fca-a1da-107d0b0151f8/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:04:41,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:04:41,626 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-21 17:04:41,626 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-21 17:04:41,626 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-21 17:04:41,627 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-21 17:04:41,628 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-21 17:04:41,628 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-21 17:04:41,628 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-21 17:04:41,629 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-21 17:04:41,629 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-21 17:04:41,630 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-21 17:04:41,630 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-21 17:04:41,630 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-21 17:04:41,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:04:41,630 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-21 17:04:41,631 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-21 17:04:41,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:04:41,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:04:41,746 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:04:41,748 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:04:42,496 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:04:42,505 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:04:42,505 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-21 17:04:42,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:04:42 BoogieIcfgContainer [2022-11-21 17:04:42,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:04:42,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:04:42,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:04:42,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:04:42,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:04:40" (1/3) ... [2022-11-21 17:04:42,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd73379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:04:42, skipping insertion in model container [2022-11-21 17:04:42,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:41" (2/3) ... [2022-11-21 17:04:42,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd73379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:04:42, skipping insertion in model container [2022-11-21 17:04:42,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:04:42" (3/3) ... [2022-11-21 17:04:42,516 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.06.cil-1.c [2022-11-21 17:04:42,535 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:04:42,535 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 17:04:42,589 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:04:42,595 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;@2a795289, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:04:42,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 17:04:42,603 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 209 states have (on average 1.6411483253588517) internal successors, (343), 213 states have internal predecessors, (343), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-21 17:04:42,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-21 17:04:42,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:04:42,626 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:42,627 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:04:42,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:42,634 INFO L85 PathProgramCache]: Analyzing trace with hash 750572517, now seen corresponding path program 1 times [2022-11-21 17:04:42,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:42,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402258194] [2022-11-21 17:04:42,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:42,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:42,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:42,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:04:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:43,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:04:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:43,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 17:04:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:43,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 17:04:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:43,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 17:04:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:43,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:43,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:04:43,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402258194] [2022-11-21 17:04:43,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402258194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:04:43,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:04:43,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:04:43,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978569046] [2022-11-21 17:04:43,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:04:43,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:04:43,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:04:43,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:04:43,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:04:43,244 INFO L87 Difference]: Start difference. First operand has 240 states, 209 states have (on average 1.6411483253588517) internal successors, (343), 213 states have internal predecessors, (343), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:04:44,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:04:44,615 INFO L93 Difference]: Finished difference Result 548 states and 896 transitions. [2022-11-21 17:04:44,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:04:44,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-21 17:04:44,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:04:44,648 INFO L225 Difference]: With dead ends: 548 [2022-11-21 17:04:44,648 INFO L226 Difference]: Without dead ends: 310 [2022-11-21 17:04:44,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:04:44,656 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 602 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:04:44,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 485 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 17:04:44,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-11-21 17:04:44,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 234. [2022-11-21 17:04:44,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 205 states have (on average 1.551219512195122) internal successors, (318), 207 states have internal predecessors, (318), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-21 17:04:44,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 360 transitions. [2022-11-21 17:04:44,740 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 360 transitions. Word has length 112 [2022-11-21 17:04:44,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:04:44,740 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 360 transitions. [2022-11-21 17:04:44,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:04:44,741 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 360 transitions. [2022-11-21 17:04:44,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-21 17:04:44,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:04:44,744 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:44,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:04:44,745 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:04:44,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:44,746 INFO L85 PathProgramCache]: Analyzing trace with hash 632131043, now seen corresponding path program 1 times [2022-11-21 17:04:44,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:44,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516759857] [2022-11-21 17:04:44,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:44,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:44,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:04:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:44,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:04:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:45,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 17:04:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:45,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 17:04:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:45,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 17:04:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:45,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:45,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:04:45,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516759857] [2022-11-21 17:04:45,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516759857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:04:45,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:04:45,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:04:45,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367796832] [2022-11-21 17:04:45,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:04:45,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:04:45,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:04:45,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:04:45,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:04:45,109 INFO L87 Difference]: Start difference. First operand 234 states and 360 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:04:47,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:04:47,189 INFO L93 Difference]: Finished difference Result 832 states and 1311 transitions. [2022-11-21 17:04:47,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 17:04:47,190 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-21 17:04:47,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:04:47,195 INFO L225 Difference]: With dead ends: 832 [2022-11-21 17:04:47,196 INFO L226 Difference]: Without dead ends: 612 [2022-11-21 17:04:47,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:04:47,199 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 887 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:04:47,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 831 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-21 17:04:47,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-11-21 17:04:47,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 459. [2022-11-21 17:04:47,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 408 states have (on average 1.5637254901960784) internal successors, (638), 411 states have internal predecessors, (638), 37 states have call successors, (37), 13 states have call predecessors, (37), 13 states have return successors, (38), 35 states have call predecessors, (38), 35 states have call successors, (38) [2022-11-21 17:04:47,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 713 transitions. [2022-11-21 17:04:47,292 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 713 transitions. Word has length 112 [2022-11-21 17:04:47,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:04:47,293 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 713 transitions. [2022-11-21 17:04:47,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:04:47,293 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 713 transitions. [2022-11-21 17:04:47,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-21 17:04:47,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:04:47,307 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:47,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:04:47,307 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:04:47,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:47,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1626383839, now seen corresponding path program 1 times [2022-11-21 17:04:47,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:47,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131498417] [2022-11-21 17:04:47,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:47,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:47,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:04:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:47,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:04:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:47,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 17:04:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:47,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 17:04:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:47,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 17:04:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:47,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:47,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:04:47,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131498417] [2022-11-21 17:04:47,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131498417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:04:47,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:04:47,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:04:47,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313610037] [2022-11-21 17:04:47,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:04:47,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:04:47,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:04:47,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:04:47,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:04:47,540 INFO L87 Difference]: Start difference. First operand 459 states and 713 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:04:50,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:04:50,014 INFO L93 Difference]: Finished difference Result 1365 states and 2151 transitions. [2022-11-21 17:04:50,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:04:50,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-21 17:04:50,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:04:50,024 INFO L225 Difference]: With dead ends: 1365 [2022-11-21 17:04:50,024 INFO L226 Difference]: Without dead ends: 920 [2022-11-21 17:04:50,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:04:50,027 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 896 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 2020 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 2075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:04:50,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 1544 Invalid, 2075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2020 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-21 17:04:50,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2022-11-21 17:04:50,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 669. [2022-11-21 17:04:50,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 596 states have (on average 1.5570469798657718) internal successors, (928), 600 states have internal predecessors, (928), 52 states have call successors, (52), 19 states have call predecessors, (52), 20 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2022-11-21 17:04:50,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 1035 transitions. [2022-11-21 17:04:50,120 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 1035 transitions. Word has length 112 [2022-11-21 17:04:50,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:04:50,120 INFO L495 AbstractCegarLoop]: Abstraction has 669 states and 1035 transitions. [2022-11-21 17:04:50,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:04:50,121 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 1035 transitions. [2022-11-21 17:04:50,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-21 17:04:50,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:04:50,123 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:50,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:04:50,124 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:04:50,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:50,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1317198239, now seen corresponding path program 1 times [2022-11-21 17:04:50,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:50,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666390903] [2022-11-21 17:04:50,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:50,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:50,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:04:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:50,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:04:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:50,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 17:04:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:50,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 17:04:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:50,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 17:04:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:50,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:50,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:04:50,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666390903] [2022-11-21 17:04:50,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666390903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:04:50,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:04:50,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:04:50,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152482259] [2022-11-21 17:04:50,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:04:50,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:04:50,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:04:50,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:04:50,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:04:50,386 INFO L87 Difference]: Start difference. First operand 669 states and 1035 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:04:52,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:04:52,836 INFO L93 Difference]: Finished difference Result 2150 states and 3381 transitions. [2022-11-21 17:04:52,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:04:52,837 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-21 17:04:52,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:04:52,845 INFO L225 Difference]: With dead ends: 2150 [2022-11-21 17:04:52,845 INFO L226 Difference]: Without dead ends: 1495 [2022-11-21 17:04:52,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:04:52,849 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 968 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 1783 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 1866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:04:52,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 1021 Invalid, 1866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1783 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-21 17:04:52,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2022-11-21 17:04:53,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1090. [2022-11-21 17:04:53,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 973 states have (on average 1.5508735868448098) internal successors, (1509), 979 states have internal predecessors, (1509), 82 states have call successors, (82), 31 states have call predecessors, (82), 34 states have return successors, (93), 83 states have call predecessors, (93), 80 states have call successors, (93) [2022-11-21 17:04:53,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1684 transitions. [2022-11-21 17:04:53,015 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1684 transitions. Word has length 112 [2022-11-21 17:04:53,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:04:53,017 INFO L495 AbstractCegarLoop]: Abstraction has 1090 states and 1684 transitions. [2022-11-21 17:04:53,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:04:53,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1684 transitions. [2022-11-21 17:04:53,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-21 17:04:53,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:04:53,020 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:53,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:04:53,021 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:04:53,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:53,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1358794143, now seen corresponding path program 1 times [2022-11-21 17:04:53,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:53,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014657951] [2022-11-21 17:04:53,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:53,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:53,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:04:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:53,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:04:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:53,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 17:04:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:53,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 17:04:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:53,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 17:04:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:53,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:53,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:04:53,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014657951] [2022-11-21 17:04:53,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014657951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:04:53,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:04:53,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:04:53,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164729078] [2022-11-21 17:04:53,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:04:53,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:04:53,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:04:53,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:04:53,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:04:53,287 INFO L87 Difference]: Start difference. First operand 1090 states and 1684 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:04:55,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:04:55,857 INFO L93 Difference]: Finished difference Result 3660 states and 5738 transitions. [2022-11-21 17:04:55,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:04:55,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-21 17:04:55,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:04:55,875 INFO L225 Difference]: With dead ends: 3660 [2022-11-21 17:04:55,875 INFO L226 Difference]: Without dead ends: 2584 [2022-11-21 17:04:55,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:04:55,890 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 894 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 1990 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 2047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:04:55,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 1542 Invalid, 2047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1990 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-21 17:04:55,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2022-11-21 17:04:56,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 1938. [2022-11-21 17:04:56,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1938 states, 1733 states have (on average 1.5470282746682054) internal successors, (2681), 1743 states have internal predecessors, (2681), 142 states have call successors, (142), 55 states have call predecessors, (142), 62 states have return successors, (175), 147 states have call predecessors, (175), 140 states have call successors, (175) [2022-11-21 17:04:56,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1938 states to 1938 states and 2998 transitions. [2022-11-21 17:04:56,121 INFO L78 Accepts]: Start accepts. Automaton has 1938 states and 2998 transitions. Word has length 112 [2022-11-21 17:04:56,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:04:56,121 INFO L495 AbstractCegarLoop]: Abstraction has 1938 states and 2998 transitions. [2022-11-21 17:04:56,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:04:56,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1938 states and 2998 transitions. [2022-11-21 17:04:56,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-21 17:04:56,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:04:56,124 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:56,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:04:56,125 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:04:56,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:56,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1330293853, now seen corresponding path program 1 times [2022-11-21 17:04:56,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:56,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188258181] [2022-11-21 17:04:56,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:56,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:56,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:04:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:56,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:04:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:56,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 17:04:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:56,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 17:04:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:56,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 17:04:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:56,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:56,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:04:56,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188258181] [2022-11-21 17:04:56,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188258181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:04:56,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:04:56,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:04:56,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948827140] [2022-11-21 17:04:56,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:04:56,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:04:56,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:04:56,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:04:56,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:04:56,352 INFO L87 Difference]: Start difference. First operand 1938 states and 2998 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:04:59,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:04:59,008 INFO L93 Difference]: Finished difference Result 6690 states and 10486 transitions. [2022-11-21 17:04:59,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:04:59,009 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-21 17:04:59,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:04:59,033 INFO L225 Difference]: With dead ends: 6690 [2022-11-21 17:04:59,033 INFO L226 Difference]: Without dead ends: 4766 [2022-11-21 17:04:59,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:04:59,041 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 893 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 1977 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 2034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-21 17:04:59,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 1542 Invalid, 2034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1977 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-21 17:04:59,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4766 states. [2022-11-21 17:04:59,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4766 to 3639. [2022-11-21 17:04:59,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3639 states, 3258 states have (on average 1.5441988950276244) internal successors, (5031), 3276 states have internal predecessors, (5031), 262 states have call successors, (262), 103 states have call predecessors, (262), 118 states have return successors, (357), 275 states have call predecessors, (357), 260 states have call successors, (357) [2022-11-21 17:04:59,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5650 transitions. [2022-11-21 17:04:59,521 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5650 transitions. Word has length 112 [2022-11-21 17:04:59,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:04:59,521 INFO L495 AbstractCegarLoop]: Abstraction has 3639 states and 5650 transitions. [2022-11-21 17:04:59,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:04:59,522 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5650 transitions. [2022-11-21 17:04:59,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-21 17:04:59,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:04:59,527 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:59,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:04:59,527 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:04:59,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:59,530 INFO L85 PathProgramCache]: Analyzing trace with hash -610288161, now seen corresponding path program 1 times [2022-11-21 17:04:59,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:59,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242041157] [2022-11-21 17:04:59,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:59,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:59,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:04:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:59,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:04:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:59,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 17:04:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:59,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 17:04:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:59,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 17:04:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:59,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:59,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:04:59,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242041157] [2022-11-21 17:04:59,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242041157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:04:59,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:04:59,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:04:59,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520894978] [2022-11-21 17:04:59,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:04:59,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:04:59,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:04:59,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:04:59,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:04:59,777 INFO L87 Difference]: Start difference. First operand 3639 states and 5650 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:05:02,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:05:02,981 INFO L93 Difference]: Finished difference Result 12749 states and 20040 transitions. [2022-11-21 17:05:02,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:05:02,981 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-21 17:05:02,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:05:03,036 INFO L225 Difference]: With dead ends: 12749 [2022-11-21 17:05:03,036 INFO L226 Difference]: Without dead ends: 9124 [2022-11-21 17:05:03,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:05:03,052 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 892 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 1964 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 2021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-21 17:05:03,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 1542 Invalid, 2021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1964 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-21 17:05:03,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9124 states. [2022-11-21 17:05:03,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9124 to 7056. [2022-11-21 17:05:03,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7056 states, 6323 states have (on average 1.5424640202435553) internal successors, (9753), 6357 states have internal predecessors, (9753), 502 states have call successors, (502), 199 states have call predecessors, (502), 230 states have return successors, (775), 531 states have call predecessors, (775), 500 states have call successors, (775) [2022-11-21 17:05:03,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7056 states to 7056 states and 11030 transitions. [2022-11-21 17:05:03,927 INFO L78 Accepts]: Start accepts. Automaton has 7056 states and 11030 transitions. Word has length 112 [2022-11-21 17:05:03,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:05:03,928 INFO L495 AbstractCegarLoop]: Abstraction has 7056 states and 11030 transitions. [2022-11-21 17:05:03,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:05:03,928 INFO L276 IsEmpty]: Start isEmpty. Operand 7056 states and 11030 transitions. [2022-11-21 17:05:03,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-21 17:05:03,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:05:03,935 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:05:03,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:05:03,935 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:05:03,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:05:03,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1266775069, now seen corresponding path program 1 times [2022-11-21 17:05:03,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:05:03,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489559531] [2022-11-21 17:05:03,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:05:03,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:05:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:04,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:05:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:04,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:05:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:04,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 17:05:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:04,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 17:05:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:04,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 17:05:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:04,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:05:04,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:05:04,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489559531] [2022-11-21 17:05:04,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489559531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:05:04,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:05:04,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:05:04,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7542375] [2022-11-21 17:05:04,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:05:04,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:05:04,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:05:04,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:05:04,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:05:04,134 INFO L87 Difference]: Start difference. First operand 7056 states and 11030 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:05:09,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:05:09,379 INFO L93 Difference]: Finished difference Result 27844 states and 43824 transitions. [2022-11-21 17:05:09,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 17:05:09,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-21 17:05:09,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:05:09,487 INFO L225 Difference]: With dead ends: 27844 [2022-11-21 17:05:09,488 INFO L226 Difference]: Without dead ends: 20802 [2022-11-21 17:05:09,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:05:09,514 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 1143 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 1944 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 1532 SdHoareTripleChecker+Invalid, 2006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:05:09,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1163 Valid, 1532 Invalid, 2006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1944 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-21 17:05:09,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20802 states. [2022-11-21 17:05:11,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20802 to 13825. [2022-11-21 17:05:11,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13825 states, 12420 states have (on average 1.5442028985507246) internal successors, (19179), 12486 states have internal predecessors, (19179), 950 states have call successors, (950), 391 states have call predecessors, (950), 454 states have return successors, (1741), 1011 states have call predecessors, (1741), 948 states have call successors, (1741) [2022-11-21 17:05:11,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13825 states to 13825 states and 21870 transitions. [2022-11-21 17:05:11,514 INFO L78 Accepts]: Start accepts. Automaton has 13825 states and 21870 transitions. Word has length 112 [2022-11-21 17:05:11,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:05:11,515 INFO L495 AbstractCegarLoop]: Abstraction has 13825 states and 21870 transitions. [2022-11-21 17:05:11,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:05:11,516 INFO L276 IsEmpty]: Start isEmpty. Operand 13825 states and 21870 transitions. [2022-11-21 17:05:11,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-21 17:05:11,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:05:11,529 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:05:11,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:05:11,530 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:05:11,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:05:11,530 INFO L85 PathProgramCache]: Analyzing trace with hash 496041503, now seen corresponding path program 1 times [2022-11-21 17:05:11,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:05:11,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144093215] [2022-11-21 17:05:11,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:05:11,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:05:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:11,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:05:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:11,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:05:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:11,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 17:05:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:11,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 17:05:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:11,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 17:05:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:11,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:05:11,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:05:11,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144093215] [2022-11-21 17:05:11,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144093215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:05:11,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:05:11,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:05:11,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539327329] [2022-11-21 17:05:11,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:05:11,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:05:11,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:05:11,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:05:11,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:05:11,818 INFO L87 Difference]: Start difference. First operand 13825 states and 21870 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:05:18,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:05:18,757 INFO L93 Difference]: Finished difference Result 54003 states and 85910 transitions. [2022-11-21 17:05:18,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 17:05:18,757 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-21 17:05:18,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:05:18,924 INFO L225 Difference]: With dead ends: 54003 [2022-11-21 17:05:18,924 INFO L226 Difference]: Without dead ends: 40192 [2022-11-21 17:05:18,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:05:18,984 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 942 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 2360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:05:18,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [954 Valid, 1528 Invalid, 2360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2301 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-21 17:05:19,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40192 states. [2022-11-21 17:05:21,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40192 to 26690. [2022-11-21 17:05:21,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26690 states, 23973 states have (on average 1.5396070579401826) internal successors, (36909), 24103 states have internal predecessors, (36909), 1814 states have call successors, (1814), 775 states have call predecessors, (1814), 902 states have return successors, (4127), 1939 states have call predecessors, (4127), 1812 states have call successors, (4127) [2022-11-21 17:05:21,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26690 states to 26690 states and 42850 transitions. [2022-11-21 17:05:21,960 INFO L78 Accepts]: Start accepts. Automaton has 26690 states and 42850 transitions. Word has length 112 [2022-11-21 17:05:21,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:05:21,961 INFO L495 AbstractCegarLoop]: Abstraction has 26690 states and 42850 transitions. [2022-11-21 17:05:21,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:05:21,962 INFO L276 IsEmpty]: Start isEmpty. Operand 26690 states and 42850 transitions. [2022-11-21 17:05:21,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-21 17:05:21,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:05:21,983 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:05:21,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:05:21,984 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:05:21,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:05:21,984 INFO L85 PathProgramCache]: Analyzing trace with hash -498652195, now seen corresponding path program 1 times [2022-11-21 17:05:21,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:05:21,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911352100] [2022-11-21 17:05:21,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:05:21,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:05:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:22,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:05:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:22,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:05:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:22,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 17:05:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:22,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 17:05:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:22,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 17:05:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:22,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:05:22,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:05:22,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911352100] [2022-11-21 17:05:22,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911352100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:05:22,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:05:22,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:05:22,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397547451] [2022-11-21 17:05:22,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:05:22,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:05:22,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:05:22,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:05:22,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:05:22,164 INFO L87 Difference]: Start difference. First operand 26690 states and 42850 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:05:34,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:05:34,039 INFO L93 Difference]: Finished difference Result 103218 states and 166620 transitions. [2022-11-21 17:05:34,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 17:05:34,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-11-21 17:05:34,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:05:34,406 INFO L225 Difference]: With dead ends: 103218 [2022-11-21 17:05:34,406 INFO L226 Difference]: Without dead ends: 76542 [2022-11-21 17:05:34,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:05:34,512 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 1063 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 1918 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1532 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-21 17:05:34,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 1532 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1918 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-21 17:05:34,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76542 states. [2022-11-21 17:05:40,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76542 to 52995. [2022-11-21 17:05:40,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52995 states, 47718 states have (on average 1.5420386436983948) internal successors, (73583), 47976 states have internal predecessors, (73583), 3478 states have call successors, (3478), 1543 states have call predecessors, (3478), 1798 states have return successors, (10293), 3731 states have call predecessors, (10293), 3476 states have call successors, (10293) [2022-11-21 17:05:40,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52995 states to 52995 states and 87354 transitions. [2022-11-21 17:05:40,545 INFO L78 Accepts]: Start accepts. Automaton has 52995 states and 87354 transitions. Word has length 112 [2022-11-21 17:05:40,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:05:40,545 INFO L495 AbstractCegarLoop]: Abstraction has 52995 states and 87354 transitions. [2022-11-21 17:05:40,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:05:40,546 INFO L276 IsEmpty]: Start isEmpty. Operand 52995 states and 87354 transitions. [2022-11-21 17:05:40,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-21 17:05:40,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:05:40,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:05:40,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 17:05:40,742 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:05:40,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:05:40,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1084928417, now seen corresponding path program 1 times [2022-11-21 17:05:40,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:05:40,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397617685] [2022-11-21 17:05:40,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:05:40,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:05:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:40,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:05:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:40,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:05:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:40,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 17:05:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:40,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 17:05:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:40,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 17:05:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:40,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:05:40,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:05:40,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397617685] [2022-11-21 17:05:40,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397617685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:05:40,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:05:40,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:05:40,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389016799] [2022-11-21 17:05:40,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:05:40,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:05:40,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:05:40,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:05:40,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:05:40,942 INFO L87 Difference]: Start difference. First operand 52995 states and 87354 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)