./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c77adeba6cdfcefcbb31bf939774adeb705a38d7ca9279d598a2176e2713682c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:52:44,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:52:44,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:52:44,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:52:44,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:52:44,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:52:44,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:52:44,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:52:44,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:52:44,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:52:44,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:52:45,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:52:45,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:52:45,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:52:45,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:52:45,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:52:45,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:52:45,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:52:45,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:52:45,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:52:45,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:52:45,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:52:45,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:52:45,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:52:45,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:52:45,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:52:45,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:52:45,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:52:45,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:52:45,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:52:45,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:52:45,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:52:45,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:52:45,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:52:45,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:52:45,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:52:45,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:52:45,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:52:45,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:52:45,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:52:45,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:52:45,053 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:52:45,091 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:52:45,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:52:45,092 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:52:45,092 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:52:45,093 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:52:45,094 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:52:45,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:52:45,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:52:45,095 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:52:45,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:52:45,096 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:52:45,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:52:45,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:52:45,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:52:45,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:52:45,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:52:45,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:52:45,097 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:52:45,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:52:45,097 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:52:45,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:52:45,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:52:45,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:52:45,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:52:45,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:52:45,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:52:45,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:52:45,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:52:45,099 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:52:45,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:52:45,100 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:52:45,100 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:52:45,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:52:45,100 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_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c77adeba6cdfcefcbb31bf939774adeb705a38d7ca9279d598a2176e2713682c [2022-11-18 20:52:45,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:52:45,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:52:45,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:52:45,379 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:52:45,380 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:52:45,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-1.c [2022-11-18 20:52:45,455 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/data/dbc98d925/fc387ba889014b7ea30010f101469118/FLAG4556dfefa [2022-11-18 20:52:46,558 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:52:46,559 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-1.c [2022-11-18 20:52:46,608 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/data/dbc98d925/fc387ba889014b7ea30010f101469118/FLAG4556dfefa [2022-11-18 20:52:46,859 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/data/dbc98d925/fc387ba889014b7ea30010f101469118 [2022-11-18 20:52:46,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:52:46,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:52:46,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:52:46,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:52:46,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:52:46,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:52:46" (1/1) ... [2022-11-18 20:52:46,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fd02f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:46, skipping insertion in model container [2022-11-18 20:52:46,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:52:46" (1/1) ... [2022-11-18 20:52:46,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:52:47,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:52:49,553 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-1.c[381679,381692] [2022-11-18 20:52:49,582 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-1.c[383339,383352] [2022-11-18 20:52:49,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:52:49,776 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:52:50,986 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-1.c[381679,381692] [2022-11-18 20:52:50,991 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-1.c[383339,383352] [2022-11-18 20:52:51,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:52:51,081 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:52:51,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:51 WrapperNode [2022-11-18 20:52:51,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:52:51,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:52:51,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:52:51,083 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:52:51,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:51" (1/1) ... [2022-11-18 20:52:51,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:51" (1/1) ... [2022-11-18 20:52:51,617 INFO L138 Inliner]: procedures = 48, calls = 47, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 12619 [2022-11-18 20:52:51,618 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:52:51,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:52:51,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:52:51,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:52:51,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:51" (1/1) ... [2022-11-18 20:52:51,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:51" (1/1) ... [2022-11-18 20:52:51,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:51" (1/1) ... [2022-11-18 20:52:51,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:51" (1/1) ... [2022-11-18 20:52:52,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:51" (1/1) ... [2022-11-18 20:52:52,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:51" (1/1) ... [2022-11-18 20:52:52,110 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:51" (1/1) ... [2022-11-18 20:52:52,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:51" (1/1) ... [2022-11-18 20:52:52,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:52:52,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:52:52,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:52:52,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:52:52,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:51" (1/1) ... [2022-11-18 20:52:52,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:52:52,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:52:52,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:52:52,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:52:52,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:52:52,570 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-18 20:52:52,570 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-18 20:52:52,570 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-18 20:52:52,570 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-18 20:52:52,571 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-18 20:52:52,571 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-18 20:52:52,571 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-18 20:52:52,571 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-18 20:52:52,571 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-18 20:52:52,571 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-18 20:52:52,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:52:52,572 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-18 20:52:52,572 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-18 20:52:52,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:52:52,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:52:52,752 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:52:52,768 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:53:01,559 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:53:01,586 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:53:01,587 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 20:53:01,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:53:01 BoogieIcfgContainer [2022-11-18 20:53:01,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:53:01,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:53:01,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:53:01,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:53:01,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:52:46" (1/3) ... [2022-11-18 20:53:01,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5147d81c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:53:01, skipping insertion in model container [2022-11-18 20:53:01,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:51" (2/3) ... [2022-11-18 20:53:01,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5147d81c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:53:01, skipping insertion in model container [2022-11-18 20:53:01,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:53:01" (3/3) ... [2022-11-18 20:53:01,600 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.02.cil-1.c [2022-11-18 20:53:01,622 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:53:01,622 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 20:53:01,731 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:53:01,739 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;@56ceb19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:53:01,739 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 20:53:01,753 INFO L276 IsEmpty]: Start isEmpty. Operand has 2315 states, 2290 states have (on average 1.8572052401746726) internal successors, (4253), 2293 states have internal predecessors, (4253), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-18 20:53:01,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 20:53:01,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:01,766 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] [2022-11-18 20:53:01,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:01,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:01,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1170312139, now seen corresponding path program 1 times [2022-11-18 20:53:01,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:01,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850802271] [2022-11-18 20:53:01,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:01,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:02,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:53:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:02,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:53:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:02,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:53:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:02,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:53:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:02,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:53:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:02,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:02,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:02,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850802271] [2022-11-18 20:53:02,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850802271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:02,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:02,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:53:02,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872621415] [2022-11-18 20:53:02,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:02,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:53:02,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:02,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:53:02,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:53:02,366 INFO L87 Difference]: Start difference. First operand has 2315 states, 2290 states have (on average 1.8572052401746726) internal successors, (4253), 2293 states have internal predecessors, (4253), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:53:03,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:03,608 INFO L93 Difference]: Finished difference Result 4802 states and 8845 transitions. [2022-11-18 20:53:03,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:53:03,611 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-11-18 20:53:03,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:03,638 INFO L225 Difference]: With dead ends: 4802 [2022-11-18 20:53:03,639 INFO L226 Difference]: Without dead ends: 2427 [2022-11-18 20:53:03,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:53:03,650 INFO L413 NwaCegarLoop]: 4168 mSDtfsCounter, 4436 mSDsluCounter, 12428 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4445 SdHoareTripleChecker+Valid, 16596 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:53:03,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4445 Valid, 16596 Invalid, 714 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:53:03,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2022-11-18 20:53:03,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 2364. [2022-11-18 20:53:03,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2364 states, 2322 states have (on average 1.8333333333333333) internal successors, (4257), 2325 states have internal predecessors, (4257), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2022-11-18 20:53:03,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2364 states to 2364 states and 4314 transitions. [2022-11-18 20:53:03,785 INFO L78 Accepts]: Start accepts. Automaton has 2364 states and 4314 transitions. Word has length 68 [2022-11-18 20:53:03,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:03,785 INFO L495 AbstractCegarLoop]: Abstraction has 2364 states and 4314 transitions. [2022-11-18 20:53:03,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:53:03,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2364 states and 4314 transitions. [2022-11-18 20:53:03,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 20:53:03,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:03,789 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] [2022-11-18 20:53:03,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:53:03,790 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:03,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:03,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1597321137, now seen corresponding path program 1 times [2022-11-18 20:53:03,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:03,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052948925] [2022-11-18 20:53:03,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:03,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:03,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:53:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:03,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:53:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:03,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:53:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:04,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:53:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:04,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:53:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:04,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:04,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:04,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052948925] [2022-11-18 20:53:04,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052948925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:04,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:04,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:53:04,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987542124] [2022-11-18 20:53:04,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:04,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:53:04,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:04,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:53:04,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:53:04,044 INFO L87 Difference]: Start difference. First operand 2364 states and 4314 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:53:05,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:05,260 INFO L93 Difference]: Finished difference Result 2807 states and 4974 transitions. [2022-11-18 20:53:05,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:53:05,261 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-11-18 20:53:05,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:05,273 INFO L225 Difference]: With dead ends: 2807 [2022-11-18 20:53:05,273 INFO L226 Difference]: Without dead ends: 2574 [2022-11-18 20:53:05,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:53:05,277 INFO L413 NwaCegarLoop]: 4150 mSDtfsCounter, 4364 mSDsluCounter, 16427 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4373 SdHoareTripleChecker+Valid, 20577 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:53:05,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4373 Valid, 20577 Invalid, 997 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [43 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:53:05,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2022-11-18 20:53:05,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 2473. [2022-11-18 20:53:05,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2413 states have (on average 1.8188976377952757) internal successors, (4389), 2417 states have internal predecessors, (4389), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2022-11-18 20:53:05,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4470 transitions. [2022-11-18 20:53:05,359 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4470 transitions. Word has length 68 [2022-11-18 20:53:05,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:05,360 INFO L495 AbstractCegarLoop]: Abstraction has 2473 states and 4470 transitions. [2022-11-18 20:53:05,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:53:05,360 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4470 transitions. [2022-11-18 20:53:05,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 20:53:05,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:05,363 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] [2022-11-18 20:53:05,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:53:05,363 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:05,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:05,364 INFO L85 PathProgramCache]: Analyzing trace with hash -721302131, now seen corresponding path program 1 times [2022-11-18 20:53:05,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:05,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404417320] [2022-11-18 20:53:05,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:05,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:05,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:53:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:05,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:53:05,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:05,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:53:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:05,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:53:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:05,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:53:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:05,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:05,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:05,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404417320] [2022-11-18 20:53:05,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404417320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:05,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:05,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:53:05,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411798649] [2022-11-18 20:53:05,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:05,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:53:05,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:05,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:53:05,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:53:05,619 INFO L87 Difference]: Start difference. First operand 2473 states and 4470 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:53:06,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:06,810 INFO L93 Difference]: Finished difference Result 3193 states and 5538 transitions. [2022-11-18 20:53:06,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:53:06,811 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-11-18 20:53:06,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:06,824 INFO L225 Difference]: With dead ends: 3193 [2022-11-18 20:53:06,824 INFO L226 Difference]: Without dead ends: 2851 [2022-11-18 20:53:06,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:53:06,827 INFO L413 NwaCegarLoop]: 4092 mSDtfsCounter, 4402 mSDsluCounter, 16249 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4411 SdHoareTripleChecker+Valid, 20341 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:53:06,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4411 Valid, 20341 Invalid, 903 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:53:06,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2022-11-18 20:53:06,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 2692. [2022-11-18 20:53:06,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2596 states have (on average 1.7927580893682589) internal successors, (4654), 2602 states have internal predecessors, (4654), 60 states have call successors, (60), 30 states have call predecessors, (60), 34 states have return successors, (73), 63 states have call predecessors, (73), 60 states have call successors, (73) [2022-11-18 20:53:06,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4787 transitions. [2022-11-18 20:53:06,930 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4787 transitions. Word has length 68 [2022-11-18 20:53:06,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:06,931 INFO L495 AbstractCegarLoop]: Abstraction has 2692 states and 4787 transitions. [2022-11-18 20:53:06,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:53:06,932 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4787 transitions. [2022-11-18 20:53:06,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 20:53:06,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:06,939 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] [2022-11-18 20:53:06,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:53:06,939 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:06,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:06,940 INFO L85 PathProgramCache]: Analyzing trace with hash -277401457, now seen corresponding path program 1 times [2022-11-18 20:53:06,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:06,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214379761] [2022-11-18 20:53:06,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:06,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:07,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:53:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:07,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:53:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:07,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:53:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:07,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:53:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:07,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:53:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:07,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:07,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:07,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214379761] [2022-11-18 20:53:07,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214379761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:07,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:07,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:53:07,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615104240] [2022-11-18 20:53:07,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:07,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:53:07,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:07,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:53:07,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:53:07,169 INFO L87 Difference]: Start difference. First operand 2692 states and 4787 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:53:08,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:08,488 INFO L93 Difference]: Finished difference Result 4037 states and 6769 transitions. [2022-11-18 20:53:08,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:53:08,491 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-11-18 20:53:08,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:08,507 INFO L225 Difference]: With dead ends: 4037 [2022-11-18 20:53:08,507 INFO L226 Difference]: Without dead ends: 3476 [2022-11-18 20:53:08,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:53:08,511 INFO L413 NwaCegarLoop]: 4145 mSDtfsCounter, 4374 mSDsluCounter, 16416 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4382 SdHoareTripleChecker+Valid, 20561 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:53:08,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4382 Valid, 20561 Invalid, 1090 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:53:08,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3476 states. [2022-11-18 20:53:08,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3476 to 3104. [2022-11-18 20:53:08,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 2940 states have (on average 1.7530612244897958) internal successors, (5154), 2950 states have internal predecessors, (5154), 100 states have call successors, (100), 54 states have call predecessors, (100), 62 states have return successors, (135), 107 states have call predecessors, (135), 100 states have call successors, (135) [2022-11-18 20:53:08,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5389 transitions. [2022-11-18 20:53:08,645 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5389 transitions. Word has length 68 [2022-11-18 20:53:08,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:08,646 INFO L495 AbstractCegarLoop]: Abstraction has 3104 states and 5389 transitions. [2022-11-18 20:53:08,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:53:08,646 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5389 transitions. [2022-11-18 20:53:08,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 20:53:08,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:08,648 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] [2022-11-18 20:53:08,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:53:08,648 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:08,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:08,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1988979729, now seen corresponding path program 1 times [2022-11-18 20:53:08,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:08,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559387938] [2022-11-18 20:53:08,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:08,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:08,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:53:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:08,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:53:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:08,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:53:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:08,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:53:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:08,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:53:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:08,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:08,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:08,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559387938] [2022-11-18 20:53:08,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559387938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:08,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:08,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:53:08,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113233841] [2022-11-18 20:53:08,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:08,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:53:08,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:08,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:53:08,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:53:08,768 INFO L87 Difference]: Start difference. First operand 3104 states and 5389 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:53:10,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:10,045 INFO L93 Difference]: Finished difference Result 5435 states and 8809 transitions. [2022-11-18 20:53:10,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:53:10,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-11-18 20:53:10,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:10,066 INFO L225 Difference]: With dead ends: 5435 [2022-11-18 20:53:10,066 INFO L226 Difference]: Without dead ends: 4462 [2022-11-18 20:53:10,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:53:10,072 INFO L413 NwaCegarLoop]: 4146 mSDtfsCounter, 4376 mSDsluCounter, 16419 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4388 SdHoareTripleChecker+Valid, 20565 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:53:10,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4388 Valid, 20565 Invalid, 953 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:53:10,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4462 states. [2022-11-18 20:53:10,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4462 to 3941. [2022-11-18 20:53:10,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3941 states, 3645 states have (on average 1.696570644718793) internal successors, (6184), 3663 states have internal predecessors, (6184), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2022-11-18 20:53:10,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3941 states to 3941 states and 6633 transitions. [2022-11-18 20:53:10,273 INFO L78 Accepts]: Start accepts. Automaton has 3941 states and 6633 transitions. Word has length 68 [2022-11-18 20:53:10,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:10,273 INFO L495 AbstractCegarLoop]: Abstraction has 3941 states and 6633 transitions. [2022-11-18 20:53:10,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:53:10,273 INFO L276 IsEmpty]: Start isEmpty. Operand 3941 states and 6633 transitions. [2022-11-18 20:53:10,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 20:53:10,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:10,276 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] [2022-11-18 20:53:10,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:53:10,276 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:10,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:10,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1507899471, now seen corresponding path program 1 times [2022-11-18 20:53:10,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:10,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689881987] [2022-11-18 20:53:10,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:10,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:10,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:53:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:10,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:53:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:10,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:53:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:10,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:53:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:10,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:53:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:10,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:10,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:10,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689881987] [2022-11-18 20:53:10,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689881987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:10,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:10,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:53:10,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154147682] [2022-11-18 20:53:10,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:10,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:53:10,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:10,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:53:10,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:53:10,369 INFO L87 Difference]: Start difference. First operand 3941 states and 6633 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:53:11,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:11,502 INFO L93 Difference]: Finished difference Result 7278 states and 11576 transitions. [2022-11-18 20:53:11,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:53:11,503 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-11-18 20:53:11,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:11,530 INFO L225 Difference]: With dead ends: 7278 [2022-11-18 20:53:11,530 INFO L226 Difference]: Without dead ends: 5469 [2022-11-18 20:53:11,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:53:11,539 INFO L413 NwaCegarLoop]: 4172 mSDtfsCounter, 4503 mSDsluCounter, 12242 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4528 SdHoareTripleChecker+Valid, 16414 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:53:11,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4528 Valid, 16414 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:53:11,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5469 states. [2022-11-18 20:53:11,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5469 to 4882. [2022-11-18 20:53:11,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4882 states, 4428 states have (on average 1.6456639566395663) internal successors, (7287), 4463 states have internal predecessors, (7287), 272 states have call successors, (272), 156 states have call predecessors, (272), 180 states have return successors, (397), 278 states have call predecessors, (397), 272 states have call successors, (397) [2022-11-18 20:53:11,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4882 states to 4882 states and 7956 transitions. [2022-11-18 20:53:11,895 INFO L78 Accepts]: Start accepts. Automaton has 4882 states and 7956 transitions. Word has length 68 [2022-11-18 20:53:11,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:11,896 INFO L495 AbstractCegarLoop]: Abstraction has 4882 states and 7956 transitions. [2022-11-18 20:53:11,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:53:11,896 INFO L276 IsEmpty]: Start isEmpty. Operand 4882 states and 7956 transitions. [2022-11-18 20:53:11,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-18 20:53:11,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:11,905 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:11,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:53:11,905 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:11,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:11,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1262348608, now seen corresponding path program 1 times [2022-11-18 20:53:11,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:11,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951597738] [2022-11-18 20:53:11,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:11,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:11,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:53:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:11,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:53:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:12,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:53:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:12,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:53:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:12,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:53:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:12,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:53:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:12,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 20:53:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:12,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 20:53:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:12,104 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 20:53:12,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:12,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951597738] [2022-11-18 20:53:12,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951597738] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:53:12,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757742761] [2022-11-18 20:53:12,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:12,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:12,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:53:12,110 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:53:12,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:53:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:12,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:53:12,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:12,332 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 20:53:12,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:53:12,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757742761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:12,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:53:12,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-18 20:53:12,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925544488] [2022-11-18 20:53:12,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:12,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:53:12,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:12,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:53:12,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:53:12,335 INFO L87 Difference]: Start difference. First operand 4882 states and 7956 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:53:12,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:12,901 INFO L93 Difference]: Finished difference Result 10239 states and 15790 transitions. [2022-11-18 20:53:12,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:53:12,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 110 [2022-11-18 20:53:12,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:12,967 INFO L225 Difference]: With dead ends: 10239 [2022-11-18 20:53:12,967 INFO L226 Difference]: Without dead ends: 7489 [2022-11-18 20:53:12,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:53:12,985 INFO L413 NwaCegarLoop]: 4150 mSDtfsCounter, 4098 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4098 SdHoareTripleChecker+Valid, 4309 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:53:12,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4098 Valid, 4309 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:53:12,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7489 states. [2022-11-18 20:53:13,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7489 to 7435. [2022-11-18 20:53:13,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7435 states, 6567 states have (on average 1.5784985533729252) internal successors, (10366), 6635 states have internal predecessors, (10366), 510 states have call successors, (510), 308 states have call predecessors, (510), 356 states have return successors, (745), 507 states have call predecessors, (745), 510 states have call successors, (745) [2022-11-18 20:53:13,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7435 states to 7435 states and 11621 transitions. [2022-11-18 20:53:13,594 INFO L78 Accepts]: Start accepts. Automaton has 7435 states and 11621 transitions. Word has length 110 [2022-11-18 20:53:13,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:13,595 INFO L495 AbstractCegarLoop]: Abstraction has 7435 states and 11621 transitions. [2022-11-18 20:53:13,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:53:13,595 INFO L276 IsEmpty]: Start isEmpty. Operand 7435 states and 11621 transitions. [2022-11-18 20:53:13,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-18 20:53:13,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:13,605 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:13,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:53:13,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:13,811 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:13,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:13,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1095009120, now seen corresponding path program 1 times [2022-11-18 20:53:13,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:13,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272700867] [2022-11-18 20:53:13,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:13,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:13,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:53:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:13,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:53:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:13,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:53:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:13,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:53:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:13,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:53:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:13,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:53:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:13,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 20:53:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:13,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 20:53:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:13,984 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 20:53:13,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:13,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272700867] [2022-11-18 20:53:13,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272700867] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:53:13,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048821859] [2022-11-18 20:53:13,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:13,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:13,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:53:13,986 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:53:14,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:53:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:14,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:53:14,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:14,140 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:53:14,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:53:14,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048821859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:14,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:53:14,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-18 20:53:14,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810279428] [2022-11-18 20:53:14,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:14,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:53:14,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:14,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:53:14,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:53:14,144 INFO L87 Difference]: Start difference. First operand 7435 states and 11621 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 20:53:14,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:14,875 INFO L93 Difference]: Finished difference Result 17751 states and 26795 transitions. [2022-11-18 20:53:14,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:53:14,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 110 [2022-11-18 20:53:14,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:14,920 INFO L225 Difference]: With dead ends: 17751 [2022-11-18 20:53:14,920 INFO L226 Difference]: Without dead ends: 12449 [2022-11-18 20:53:14,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:53:14,937 INFO L413 NwaCegarLoop]: 4299 mSDtfsCounter, 154 mSDsluCounter, 4138 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 8437 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:53:14,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 8437 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:53:14,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12449 states. [2022-11-18 20:53:15,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12449 to 12449. [2022-11-18 20:53:15,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12449 states, 10768 states have (on average 1.5169947994056463) internal successors, (16335), 10885 states have internal predecessors, (16335), 975 states have call successors, (975), 608 states have call predecessors, (975), 704 states have return successors, (1596), 987 states have call predecessors, (1596), 975 states have call successors, (1596) [2022-11-18 20:53:15,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12449 states to 12449 states and 18906 transitions. [2022-11-18 20:53:15,657 INFO L78 Accepts]: Start accepts. Automaton has 12449 states and 18906 transitions. Word has length 110 [2022-11-18 20:53:15,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:15,658 INFO L495 AbstractCegarLoop]: Abstraction has 12449 states and 18906 transitions. [2022-11-18 20:53:15,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 20:53:15,659 INFO L276 IsEmpty]: Start isEmpty. Operand 12449 states and 18906 transitions. [2022-11-18 20:53:15,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-18 20:53:15,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:15,745 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:15,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:53:15,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:15,946 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:15,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:15,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1627368555, now seen corresponding path program 1 times [2022-11-18 20:53:15,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:15,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784671236] [2022-11-18 20:53:15,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:15,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:16,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:53:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:16,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:53:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:16,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:53:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:16,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:53:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:16,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:53:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:16,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:53:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:16,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 20:53:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:16,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 20:53:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:16,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 20:53:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:16,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-18 20:53:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:16,120 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 20:53:16,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:16,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784671236] [2022-11-18 20:53:16,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784671236] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:53:16,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011352298] [2022-11-18 20:53:16,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:16,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:16,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:53:16,123 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:53:16,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:53:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:16,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:53:16,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:16,436 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:53:16,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:53:16,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011352298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:16,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:53:16,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-18 20:53:16,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712702063] [2022-11-18 20:53:16,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:16,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:53:16,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:16,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:53:16,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:53:16,439 INFO L87 Difference]: Start difference. First operand 12449 states and 18906 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 20:53:17,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:17,525 INFO L93 Difference]: Finished difference Result 32641 states and 48463 transitions. [2022-11-18 20:53:17,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:53:17,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 142 [2022-11-18 20:53:17,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:17,619 INFO L225 Difference]: With dead ends: 32641 [2022-11-18 20:53:17,619 INFO L226 Difference]: Without dead ends: 22329 [2022-11-18 20:53:17,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:53:17,660 INFO L413 NwaCegarLoop]: 4159 mSDtfsCounter, 4056 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4056 SdHoareTripleChecker+Valid, 4318 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:53:17,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4056 Valid, 4318 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:53:17,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22329 states. [2022-11-18 20:53:19,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22329 to 22119. [2022-11-18 20:53:19,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22119 states, 18858 states have (on average 1.4761374482978047) internal successors, (27837), 19089 states have internal predecessors, (27837), 1869 states have call successors, (1869), 1198 states have call predecessors, (1869), 1390 states have return successors, (3038), 1863 states have call predecessors, (3038), 1869 states have call successors, (3038) [2022-11-18 20:53:19,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22119 states to 22119 states and 32744 transitions. [2022-11-18 20:53:19,271 INFO L78 Accepts]: Start accepts. Automaton has 22119 states and 32744 transitions. Word has length 142 [2022-11-18 20:53:19,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:19,271 INFO L495 AbstractCegarLoop]: Abstraction has 22119 states and 32744 transitions. [2022-11-18 20:53:19,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 20:53:19,272 INFO L276 IsEmpty]: Start isEmpty. Operand 22119 states and 32744 transitions. [2022-11-18 20:53:19,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-18 20:53:19,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:19,328 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:19,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:53:19,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:19,538 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:19,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:19,539 INFO L85 PathProgramCache]: Analyzing trace with hash -2072719309, now seen corresponding path program 1 times [2022-11-18 20:53:19,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:19,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988079755] [2022-11-18 20:53:19,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:19,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:19,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:53:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:19,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:53:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:19,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:53:19,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:19,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:53:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:19,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:53:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:19,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 20:53:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:19,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 20:53:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:19,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 20:53:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:19,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 20:53:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:19,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 20:53:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:19,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-18 20:53:19,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:19,732 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-18 20:53:19,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:19,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988079755] [2022-11-18 20:53:19,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988079755] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:53:19,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191861018] [2022-11-18 20:53:19,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:19,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:19,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:53:19,735 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:53:19,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:53:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:19,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:53:19,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:20,008 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:53:20,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:53:20,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191861018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:20,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:53:20,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-18 20:53:20,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011371012] [2022-11-18 20:53:20,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:20,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:53:20,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:20,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:53:20,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:53:20,011 INFO L87 Difference]: Start difference. First operand 22119 states and 32744 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 20:53:21,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:21,479 INFO L93 Difference]: Finished difference Result 44457 states and 65784 transitions. [2022-11-18 20:53:21,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:53:21,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 159 [2022-11-18 20:53:21,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:21,562 INFO L225 Difference]: With dead ends: 44457 [2022-11-18 20:53:21,562 INFO L226 Difference]: Without dead ends: 24473 [2022-11-18 20:53:21,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:53:21,613 INFO L413 NwaCegarLoop]: 4137 mSDtfsCounter, 4075 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4075 SdHoareTripleChecker+Valid, 4171 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:53:21,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4075 Valid, 4171 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:53:21,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24473 states. [2022-11-18 20:53:22,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24473 to 24473. [2022-11-18 20:53:22,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24473 states, 21000 states have (on average 1.4191904761904761) internal successors, (29803), 21231 states have internal predecessors, (29803), 1923 states have call successors, (1923), 1356 states have call predecessors, (1923), 1548 states have return successors, (3106), 1917 states have call predecessors, (3106), 1923 states have call successors, (3106) [2022-11-18 20:53:23,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24473 states to 24473 states and 34832 transitions. [2022-11-18 20:53:23,048 INFO L78 Accepts]: Start accepts. Automaton has 24473 states and 34832 transitions. Word has length 159 [2022-11-18 20:53:23,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:23,048 INFO L495 AbstractCegarLoop]: Abstraction has 24473 states and 34832 transitions. [2022-11-18 20:53:23,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 20:53:23,049 INFO L276 IsEmpty]: Start isEmpty. Operand 24473 states and 34832 transitions. [2022-11-18 20:53:23,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-18 20:53:23,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:23,110 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:23,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:53:23,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:53:23,316 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:23,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:23,316 INFO L85 PathProgramCache]: Analyzing trace with hash -830749066, now seen corresponding path program 1 times [2022-11-18 20:53:23,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:23,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453053441] [2022-11-18 20:53:23,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:23,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:23,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:53:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:23,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:53:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:23,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:53:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:23,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:53:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:23,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:53:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:23,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 20:53:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:23,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 20:53:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:23,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 20:53:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:23,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 20:53:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:23,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 20:53:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:23,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-18 20:53:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:23,491 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-18 20:53:23,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:23,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453053441] [2022-11-18 20:53:23,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453053441] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:53:23,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776975591] [2022-11-18 20:53:23,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:23,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:23,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:53:23,494 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:53:23,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:53:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:23,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:53:23,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:23,701 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-18 20:53:23,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:53:23,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776975591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:23,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:53:23,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-18 20:53:23,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856831595] [2022-11-18 20:53:23,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:23,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:53:23,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:23,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:53:23,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:53:23,705 INFO L87 Difference]: Start difference. First operand 24473 states and 34832 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-18 20:53:25,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:25,484 INFO L93 Difference]: Finished difference Result 41324 states and 58008 transitions. [2022-11-18 20:53:25,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:53:25,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 159 [2022-11-18 20:53:25,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:25,603 INFO L225 Difference]: With dead ends: 41324 [2022-11-18 20:53:25,603 INFO L226 Difference]: Without dead ends: 26013 [2022-11-18 20:53:25,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:53:25,646 INFO L413 NwaCegarLoop]: 4159 mSDtfsCounter, 4088 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4088 SdHoareTripleChecker+Valid, 4325 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:53:25,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4088 Valid, 4325 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:53:25,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26013 states. [2022-11-18 20:53:27,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26013 to 25873. [2022-11-18 20:53:27,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25873 states, 22288 states have (on average 1.3940685570710696) internal successors, (31071), 22519 states have internal predecessors, (31071), 1943 states have call successors, (1943), 1448 states have call predecessors, (1943), 1640 states have return successors, (3218), 1937 states have call predecessors, (3218), 1943 states have call successors, (3218) [2022-11-18 20:53:27,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25873 states to 25873 states and 36232 transitions. [2022-11-18 20:53:27,403 INFO L78 Accepts]: Start accepts. Automaton has 25873 states and 36232 transitions. Word has length 159 [2022-11-18 20:53:27,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:27,404 INFO L495 AbstractCegarLoop]: Abstraction has 25873 states and 36232 transitions. [2022-11-18 20:53:27,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-18 20:53:27,404 INFO L276 IsEmpty]: Start isEmpty. Operand 25873 states and 36232 transitions. [2022-11-18 20:53:27,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-18 20:53:27,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:27,480 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:27,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:53:27,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:27,685 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:27,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:27,685 INFO L85 PathProgramCache]: Analyzing trace with hash -609804947, now seen corresponding path program 1 times [2022-11-18 20:53:27,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:27,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405046144] [2022-11-18 20:53:27,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:27,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:27,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:53:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:27,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:53:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:27,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:53:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:27,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:53:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:27,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:53:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:27,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:53:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:27,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:53:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:27,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 20:53:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:27,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-18 20:53:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:27,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 20:53:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:27,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-18 20:53:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:27,880 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-18 20:53:27,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:27,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405046144] [2022-11-18 20:53:27,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405046144] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:53:27,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651277747] [2022-11-18 20:53:27,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:27,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:27,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:53:27,882 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:53:27,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:53:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:28,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:53:28,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:28,087 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 20:53:28,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:53:28,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651277747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:28,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:53:28,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-18 20:53:28,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287093979] [2022-11-18 20:53:28,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:28,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:53:28,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:28,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:53:28,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:53:28,091 INFO L87 Difference]: Start difference. First operand 25873 states and 36232 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-18 20:53:30,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:30,417 INFO L93 Difference]: Finished difference Result 70245 states and 97750 transitions. [2022-11-18 20:53:30,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:53:30,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2022-11-18 20:53:30,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:30,593 INFO L225 Difference]: With dead ends: 70245 [2022-11-18 20:53:30,594 INFO L226 Difference]: Without dead ends: 46511 [2022-11-18 20:53:30,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:53:30,638 INFO L413 NwaCegarLoop]: 4172 mSDtfsCounter, 4102 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4102 SdHoareTripleChecker+Valid, 4334 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:53:30,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4102 Valid, 4334 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:53:30,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46511 states. [2022-11-18 20:53:33,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46511 to 45781. [2022-11-18 20:53:33,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45781 states, 39030 states have (on average 1.3636945939021266) internal successors, (53225), 39491 states have internal predecessors, (53225), 3677 states have call successors, (3677), 2688 states have call predecessors, (3677), 3072 states have return successors, (7178), 3665 states have call predecessors, (7178), 3677 states have call successors, (7178) [2022-11-18 20:53:33,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45781 states to 45781 states and 64080 transitions. [2022-11-18 20:53:33,882 INFO L78 Accepts]: Start accepts. Automaton has 45781 states and 64080 transitions. Word has length 160 [2022-11-18 20:53:33,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:33,882 INFO L495 AbstractCegarLoop]: Abstraction has 45781 states and 64080 transitions. [2022-11-18 20:53:33,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-18 20:53:33,883 INFO L276 IsEmpty]: Start isEmpty. Operand 45781 states and 64080 transitions. [2022-11-18 20:53:33,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-18 20:53:33,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:33,986 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:34,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:53:34,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 20:53:34,192 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:34,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:34,192 INFO L85 PathProgramCache]: Analyzing trace with hash -757749610, now seen corresponding path program 1 times [2022-11-18 20:53:34,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:34,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051564604] [2022-11-18 20:53:34,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:34,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:34,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:53:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:34,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:53:34,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:34,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:53:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:34,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:53:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:34,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:53:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:34,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:53:34,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:34,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:53:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:34,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 20:53:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:34,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 20:53:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:34,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 20:53:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:34,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-18 20:53:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:34,528 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-18 20:53:34,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:34,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051564604] [2022-11-18 20:53:34,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051564604] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:53:34,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405753472] [2022-11-18 20:53:34,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:34,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:34,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:53:34,531 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:53:34,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:53:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:34,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:53:34,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:34,780 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 20:53:34,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:53:34,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405753472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:34,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:53:34,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-18 20:53:34,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683753344] [2022-11-18 20:53:34,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:34,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:53:34,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:34,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:53:34,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:53:34,783 INFO L87 Difference]: Start difference. First operand 45781 states and 64080 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 20:53:37,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:37,365 INFO L93 Difference]: Finished difference Result 75161 states and 105873 transitions. [2022-11-18 20:53:37,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:53:37,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 160 [2022-11-18 20:53:37,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:37,617 INFO L225 Difference]: With dead ends: 75161 [2022-11-18 20:53:37,617 INFO L226 Difference]: Without dead ends: 40527 [2022-11-18 20:53:37,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:53:37,680 INFO L413 NwaCegarLoop]: 4136 mSDtfsCounter, 4089 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4089 SdHoareTripleChecker+Valid, 4169 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:53:37,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4089 Valid, 4169 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:53:37,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40527 states. [2022-11-18 20:53:40,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40527 to 29943. [2022-11-18 20:53:40,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29943 states, 25784 states have (on average 1.3390862550418865) internal successors, (34527), 26025 states have internal predecessors, (34527), 2245 states have call successors, (2245), 1720 states have call predecessors, (2245), 1912 states have return successors, (3934), 2229 states have call predecessors, (3934), 2245 states have call successors, (3934) [2022-11-18 20:53:40,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29943 states to 29943 states and 40706 transitions. [2022-11-18 20:53:40,421 INFO L78 Accepts]: Start accepts. Automaton has 29943 states and 40706 transitions. Word has length 160 [2022-11-18 20:53:40,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:40,421 INFO L495 AbstractCegarLoop]: Abstraction has 29943 states and 40706 transitions. [2022-11-18 20:53:40,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 20:53:40,421 INFO L276 IsEmpty]: Start isEmpty. Operand 29943 states and 40706 transitions. [2022-11-18 20:53:40,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-18 20:53:40,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:40,479 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:40,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-18 20:53:40,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 20:53:40,684 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:40,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:40,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1793650834, now seen corresponding path program 1 times [2022-11-18 20:53:40,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:40,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877397955] [2022-11-18 20:53:40,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:40,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:40,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:53:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:40,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:53:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:40,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:53:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:40,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:53:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:40,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:53:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:40,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:53:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:40,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:53:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:40,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 20:53:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:40,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 20:53:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:40,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 20:53:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:40,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-18 20:53:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:40,861 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-18 20:53:40,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:40,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877397955] [2022-11-18 20:53:40,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877397955] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:53:40,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422425139] [2022-11-18 20:53:40,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:40,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:40,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:53:40,864 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:53:40,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:53:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:40,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:53:40,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:41,051 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 20:53:41,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:53:41,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422425139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:41,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:53:41,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-18 20:53:41,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157477221] [2022-11-18 20:53:41,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:41,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:53:41,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:41,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:53:41,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:53:41,054 INFO L87 Difference]: Start difference. First operand 29943 states and 40706 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-18 20:53:45,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:45,100 INFO L93 Difference]: Finished difference Result 82801 states and 112154 transitions. [2022-11-18 20:53:45,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:53:45,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2022-11-18 20:53:45,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:45,297 INFO L225 Difference]: With dead ends: 82801 [2022-11-18 20:53:45,297 INFO L226 Difference]: Without dead ends: 55005 [2022-11-18 20:53:45,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:53:45,368 INFO L413 NwaCegarLoop]: 4180 mSDtfsCounter, 4098 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4098 SdHoareTripleChecker+Valid, 4341 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:53:45,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4098 Valid, 4341 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:53:45,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55005 states. [2022-11-18 20:53:49,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55005 to 53491. [2022-11-18 20:53:49,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53491 states, 45624 states have (on average 1.3054751884972822) internal successors, (59561), 46105 states have internal predecessors, (59561), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 3600 states have return successors, (8740), 4233 states have call predecessors, (8740), 4265 states have call successors, (8740) [2022-11-18 20:53:49,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53491 states to 53491 states and 72566 transitions. [2022-11-18 20:53:49,706 INFO L78 Accepts]: Start accepts. Automaton has 53491 states and 72566 transitions. Word has length 160 [2022-11-18 20:53:49,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:49,706 INFO L495 AbstractCegarLoop]: Abstraction has 53491 states and 72566 transitions. [2022-11-18 20:53:49,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-18 20:53:49,707 INFO L276 IsEmpty]: Start isEmpty. Operand 53491 states and 72566 transitions. [2022-11-18 20:53:49,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-18 20:53:49,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:49,781 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:49,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:53:49,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a4c88c6-f387-455b-b74f-27a4075d6931/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 20:53:49,995 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:49,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:49,995 INFO L85 PathProgramCache]: Analyzing trace with hash -392345557, now seen corresponding path program 1 times [2022-11-18 20:53:49,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:49,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305804903] [2022-11-18 20:53:49,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:49,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:50,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:53:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:50,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:53:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:50,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:53:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:50,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:53:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:50,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:53:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:50,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:53:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:50,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:53:50,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:50,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 20:53:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:50,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-18 20:53:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:50,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 20:53:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:50,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-18 20:53:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:50,105 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-11-18 20:53:50,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:50,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305804903] [2022-11-18 20:53:50,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305804903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:50,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:50,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:53:50,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544838773] [2022-11-18 20:53:50,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:50,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:53:50,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:50,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:53:50,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:53:50,108 INFO L87 Difference]: Start difference. First operand 53491 states and 72566 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8)