./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label35.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32d7a7e-9f8b-490e-b57e-06397cb85e1b/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32d7a7e-9f8b-490e-b57e-06397cb85e1b/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32d7a7e-9f8b-490e-b57e-06397cb85e1b/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32d7a7e-9f8b-490e-b57e-06397cb85e1b/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label35.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32d7a7e-9f8b-490e-b57e-06397cb85e1b/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32d7a7e-9f8b-490e-b57e-06397cb85e1b/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e81bbc4430f76a90c5e02a887d03761648c221c2fd9f1be76d3af26cf9b24c3e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:45:27,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:45:27,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:45:28,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:45:28,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:45:28,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:45:28,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:45:28,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:45:28,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:45:28,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:45:28,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:45:28,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:45:28,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:45:28,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:45:28,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:45:28,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:45:28,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:45:28,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:45:28,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:45:28,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:45:28,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:45:28,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:45:28,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:45:28,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:45:28,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:45:28,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:45:28,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:45:28,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:45:28,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:45:28,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:45:28,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:45:28,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:45:28,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:45:28,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:45:28,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:45:28,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:45:28,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:45:28,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:45:28,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:45:28,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:45:28,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:45:28,079 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32d7a7e-9f8b-490e-b57e-06397cb85e1b/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:45:28,110 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:45:28,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:45:28,111 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:45:28,111 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:45:28,112 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:45:28,113 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:45:28,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:45:28,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:45:28,114 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:45:28,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:45:28,115 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:45:28,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:45:28,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:45:28,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:45:28,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:45:28,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:45:28,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:45:28,118 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:45:28,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:45:28,118 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:45:28,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:45:28,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:45:28,120 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:45:28,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:45:28,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:45:28,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:45:28,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:45:28,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:45:28,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:45:28,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:45:28,123 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:45:28,123 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:45:28,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:45:28,124 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_f32d7a7e-9f8b-490e-b57e-06397cb85e1b/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32d7a7e-9f8b-490e-b57e-06397cb85e1b/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e81bbc4430f76a90c5e02a887d03761648c221c2fd9f1be76d3af26cf9b24c3e [2022-10-17 10:45:28,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:45:28,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:45:28,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:45:28,461 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:45:28,462 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:45:28,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32d7a7e-9f8b-490e-b57e-06397cb85e1b/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/eca-rers2012/Problem17_label35.c [2022-10-17 10:45:28,554 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32d7a7e-9f8b-490e-b57e-06397cb85e1b/bin/uautomizer-J5u9QxTXDZ/data/8be51b3a9/a0b4045aca8548c697830f5c23d87aa9/FLAGb3b6f5360 [2022-10-17 10:45:29,311 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:45:29,312 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32d7a7e-9f8b-490e-b57e-06397cb85e1b/sv-benchmarks/c/eca-rers2012/Problem17_label35.c [2022-10-17 10:45:29,338 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32d7a7e-9f8b-490e-b57e-06397cb85e1b/bin/uautomizer-J5u9QxTXDZ/data/8be51b3a9/a0b4045aca8548c697830f5c23d87aa9/FLAGb3b6f5360 [2022-10-17 10:45:29,428 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32d7a7e-9f8b-490e-b57e-06397cb85e1b/bin/uautomizer-J5u9QxTXDZ/data/8be51b3a9/a0b4045aca8548c697830f5c23d87aa9 [2022-10-17 10:45:29,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:45:29,435 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:45:29,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:45:29,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:45:29,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:45:29,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:45:29" (1/1) ... [2022-10-17 10:45:29,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5589099a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:29, skipping insertion in model container [2022-10-17 10:45:29,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:45:29" (1/1) ... [2022-10-17 10:45:29,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:45:29,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:45:29,862 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32d7a7e-9f8b-490e-b57e-06397cb85e1b/sv-benchmarks/c/eca-rers2012/Problem17_label35.c[1267,1280] [2022-10-17 10:45:30,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:45:30,891 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:45:30,910 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32d7a7e-9f8b-490e-b57e-06397cb85e1b/sv-benchmarks/c/eca-rers2012/Problem17_label35.c[1267,1280] [2022-10-17 10:45:31,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:45:31,614 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:45:31,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:31 WrapperNode [2022-10-17 10:45:31,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:45:31,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:45:31,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:45:31,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:45:31,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:31" (1/1) ... [2022-10-17 10:45:31,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:31" (1/1) ... [2022-10-17 10:45:32,015 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-10-17 10:45:32,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:45:32,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:45:32,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:45:32,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:45:32,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:31" (1/1) ... [2022-10-17 10:45:32,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:31" (1/1) ... [2022-10-17 10:45:32,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:31" (1/1) ... [2022-10-17 10:45:32,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:31" (1/1) ... [2022-10-17 10:45:32,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:31" (1/1) ... [2022-10-17 10:45:32,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:31" (1/1) ... [2022-10-17 10:45:32,410 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:31" (1/1) ... [2022-10-17 10:45:32,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:31" (1/1) ... [2022-10-17 10:45:32,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:45:32,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:45:32,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:45:32,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:45:32,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:31" (1/1) ... [2022-10-17 10:45:32,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:45:32,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32d7a7e-9f8b-490e-b57e-06397cb85e1b/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:45:32,497 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32d7a7e-9f8b-490e-b57e-06397cb85e1b/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:45:32,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32d7a7e-9f8b-490e-b57e-06397cb85e1b/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:45:32,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:45:32,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:45:32,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:45:32,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:45:32,612 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:45:32,614 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:45:37,712 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:45:37,730 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:45:37,730 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:45:37,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:45:37 BoogieIcfgContainer [2022-10-17 10:45:37,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:45:37,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:45:37,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:45:37,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:45:37,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:45:29" (1/3) ... [2022-10-17 10:45:37,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33651a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:45:37, skipping insertion in model container [2022-10-17 10:45:37,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:45:31" (2/3) ... [2022-10-17 10:45:37,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33651a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:45:37, skipping insertion in model container [2022-10-17 10:45:37,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:45:37" (3/3) ... [2022-10-17 10:45:37,745 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label35.c [2022-10-17 10:45:37,767 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:45:37,767 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:45:37,849 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:45:37,860 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;@19b31cf1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:45:37,861 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:45:37,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:37,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 10:45:37,876 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:45:37,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:45:37,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:45:37,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:45:37,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1810726993, now seen corresponding path program 1 times [2022-10-17 10:45:37,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:45:37,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561348964] [2022-10-17 10:45:37,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:45:37,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:45:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:45:38,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:45:38,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:45:38,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561348964] [2022-10-17 10:45:38,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561348964] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:45:38,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:45:38,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:45:38,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169634725] [2022-10-17 10:45:38,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:45:38,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:45:38,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:45:38,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:45:38,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:45:38,152 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:42,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:45:42,536 INFO L93 Difference]: Finished difference Result 1644 states and 3029 transitions. [2022-10-17 10:45:42,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:45:42,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-10-17 10:45:42,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:45:42,568 INFO L225 Difference]: With dead ends: 1644 [2022-10-17 10:45:42,568 INFO L226 Difference]: Without dead ends: 977 [2022-10-17 10:45:42,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:45:42,579 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 481 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:45:42,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 503 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-10-17 10:45:42,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-10-17 10:45:42,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 971. [2022-10-17 10:45:42,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5536082474226804) internal successors, (1507), 970 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:42,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1507 transitions. [2022-10-17 10:45:42,735 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1507 transitions. Word has length 7 [2022-10-17 10:45:42,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:45:42,737 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1507 transitions. [2022-10-17 10:45:42,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:42,738 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1507 transitions. [2022-10-17 10:45:42,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-10-17 10:45:42,747 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:45:42,748 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:45:42,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:45:42,749 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:45:42,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:45:42,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1811797306, now seen corresponding path program 1 times [2022-10-17 10:45:42,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:45:42,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581716809] [2022-10-17 10:45:42,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:45:42,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:45:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:45:43,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:45:43,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:45:43,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581716809] [2022-10-17 10:45:43,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581716809] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:45:43,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:45:43,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:45:43,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410933221] [2022-10-17 10:45:43,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:45:43,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:45:43,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:45:43,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:45:43,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:45:43,206 INFO L87 Difference]: Start difference. First operand 971 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:46,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:45:46,661 INFO L93 Difference]: Finished difference Result 2813 states and 4381 transitions. [2022-10-17 10:45:46,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:45:46,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-10-17 10:45:46,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:45:46,676 INFO L225 Difference]: With dead ends: 2813 [2022-10-17 10:45:46,677 INFO L226 Difference]: Without dead ends: 1844 [2022-10-17 10:45:46,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:45:46,687 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 405 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:45:46,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 579 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-10-17 10:45:46,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-10-17 10:45:46,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1841. [2022-10-17 10:45:46,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.35) internal successors, (2484), 1840 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:46,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2484 transitions. [2022-10-17 10:45:46,768 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2484 transitions. Word has length 74 [2022-10-17 10:45:46,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:45:46,772 INFO L495 AbstractCegarLoop]: Abstraction has 1841 states and 2484 transitions. [2022-10-17 10:45:46,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:46,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2484 transitions. [2022-10-17 10:45:46,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-10-17 10:45:46,778 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:45:46,779 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:45:46,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:45:46,782 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:45:46,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:45:46,796 INFO L85 PathProgramCache]: Analyzing trace with hash 261240196, now seen corresponding path program 1 times [2022-10-17 10:45:46,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:45:46,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228126165] [2022-10-17 10:45:46,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:45:46,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:45:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:45:47,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:45:47,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:45:47,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228126165] [2022-10-17 10:45:47,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228126165] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:45:47,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:45:47,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:45:47,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658518092] [2022-10-17 10:45:47,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:45:47,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:45:47,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:45:47,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:45:47,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:45:47,117 INFO L87 Difference]: Start difference. First operand 1841 states and 2484 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:50,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:45:50,396 INFO L93 Difference]: Finished difference Result 4552 states and 6282 transitions. [2022-10-17 10:45:50,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:45:50,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-10-17 10:45:50,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:45:50,414 INFO L225 Difference]: With dead ends: 4552 [2022-10-17 10:45:50,414 INFO L226 Difference]: Without dead ends: 2713 [2022-10-17 10:45:50,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:45:50,419 INFO L413 NwaCegarLoop]: 818 mSDtfsCounter, 500 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:45:50,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 886 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-10-17 10:45:50,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2022-10-17 10:45:50,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2711. [2022-10-17 10:45:50,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2710 states have (on average 1.3003690036900368) internal successors, (3524), 2710 states have internal predecessors, (3524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:50,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3524 transitions. [2022-10-17 10:45:50,495 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3524 transitions. Word has length 77 [2022-10-17 10:45:50,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:45:50,496 INFO L495 AbstractCegarLoop]: Abstraction has 2711 states and 3524 transitions. [2022-10-17 10:45:50,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:50,497 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3524 transitions. [2022-10-17 10:45:50,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-10-17 10:45:50,500 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:45:50,501 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:45:50,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:45:50,501 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:45:50,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:45:50,502 INFO L85 PathProgramCache]: Analyzing trace with hash -154130228, now seen corresponding path program 1 times [2022-10-17 10:45:50,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:45:50,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276921147] [2022-10-17 10:45:50,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:45:50,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:45:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:45:50,831 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-10-17 10:45:50,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:45:50,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276921147] [2022-10-17 10:45:50,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276921147] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:45:50,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:45:50,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:45:50,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508805939] [2022-10-17 10:45:50,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:45:50,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:45:50,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:45:50,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:45:50,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:45:50,839 INFO L87 Difference]: Start difference. First operand 2711 states and 3524 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:53,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:45:53,616 INFO L93 Difference]: Finished difference Result 7984 states and 10361 transitions. [2022-10-17 10:45:53,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:45:53,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-10-17 10:45:53,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:45:53,642 INFO L225 Difference]: With dead ends: 7984 [2022-10-17 10:45:53,642 INFO L226 Difference]: Without dead ends: 4421 [2022-10-17 10:45:53,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:45:53,649 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:45:53,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-10-17 10:45:53,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2022-10-17 10:45:53,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 3571. [2022-10-17 10:45:53,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3571 states, 3570 states have (on average 1.1775910364145659) internal successors, (4204), 3570 states have internal predecessors, (4204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:53,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3571 states to 3571 states and 4204 transitions. [2022-10-17 10:45:53,748 INFO L78 Accepts]: Start accepts. Automaton has 3571 states and 4204 transitions. Word has length 146 [2022-10-17 10:45:53,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:45:53,748 INFO L495 AbstractCegarLoop]: Abstraction has 3571 states and 4204 transitions. [2022-10-17 10:45:53,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:53,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3571 states and 4204 transitions. [2022-10-17 10:45:53,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-10-17 10:45:53,761 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:45:53,762 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2022-10-17 10:45:53,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:45:53,762 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:45:53,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:45:53,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1380063534, now seen corresponding path program 1 times [2022-10-17 10:45:53,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:45:53,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776225888] [2022-10-17 10:45:53,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:45:53,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:45:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:45:54,114 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:45:54,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:45:54,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776225888] [2022-10-17 10:45:54,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776225888] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:45:54,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:45:54,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:45:54,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747131083] [2022-10-17 10:45:54,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:45:54,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:45:54,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:45:54,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:45:54,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:45:54,124 INFO L87 Difference]: Start difference. First operand 3571 states and 4204 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:56,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:45:56,622 INFO L93 Difference]: Finished difference Result 9273 states and 11087 transitions. [2022-10-17 10:45:56,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:45:56,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2022-10-17 10:45:56,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:45:56,653 INFO L225 Difference]: With dead ends: 9273 [2022-10-17 10:45:56,653 INFO L226 Difference]: Without dead ends: 5704 [2022-10-17 10:45:56,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:45:56,660 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:45:56,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-10-17 10:45:56,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5704 states. [2022-10-17 10:45:56,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5704 to 5704. [2022-10-17 10:45:56,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5704 states, 5703 states have (on average 1.1595651411537786) internal successors, (6613), 5703 states have internal predecessors, (6613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:56,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 6613 transitions. [2022-10-17 10:45:56,824 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 6613 transitions. Word has length 159 [2022-10-17 10:45:56,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:45:56,825 INFO L495 AbstractCegarLoop]: Abstraction has 5704 states and 6613 transitions. [2022-10-17 10:45:56,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:45:56,825 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 6613 transitions. [2022-10-17 10:45:56,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-10-17 10:45:56,828 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:45:56,828 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2022-10-17 10:45:56,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:45:56,829 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:45:56,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:45:56,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1627235923, now seen corresponding path program 1 times [2022-10-17 10:45:56,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:45:56,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718628581] [2022-10-17 10:45:56,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:45:56,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:45:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:45:57,041 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-10-17 10:45:57,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:45:57,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718628581] [2022-10-17 10:45:57,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718628581] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:45:57,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:45:57,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:45:57,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187991435] [2022-10-17 10:45:57,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:45:57,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:45:57,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:45:57,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:45:57,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:45:57,045 INFO L87 Difference]: Start difference. First operand 5704 states and 6613 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)