./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem18_label27.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem18_label27.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9d0d45835f7a9f8cecd406d9f9780f895fd97bdea10b2732542f2cbe8a04ba7e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 17:01:50,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:01:50,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:01:50,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:01:50,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:01:50,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:01:50,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:01:50,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:01:50,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:01:50,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:01:50,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:01:50,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:01:50,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:01:50,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:01:50,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:01:50,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:01:50,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:01:50,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:01:50,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:01:50,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:01:50,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:01:50,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:01:50,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:01:50,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:01:50,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:01:50,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:01:50,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:01:50,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:01:50,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:01:50,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:01:50,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:01:50,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:01:50,128 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:01:50,129 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:01:50,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:01:50,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:01:50,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:01:50,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:01:50,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:01:50,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:01:50,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:01:50,144 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 17:01:50,178 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:01:50,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:01:50,182 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:01:50,182 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:01:50,183 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:01:50,183 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:01:50,184 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:01:50,184 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:01:50,185 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:01:50,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:01:50,186 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:01:50,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:01:50,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:01:50,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:01:50,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:01:50,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:01:50,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:01:50,188 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:01:50,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:01:50,189 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:01:50,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:01:50,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:01:50,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:01:50,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:01:50,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:01:50,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:01:50,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:01:50,191 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:01:50,191 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:01:50,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:01:50,192 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:01:50,192 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:01:50,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:01:50,193 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_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d0d45835f7a9f8cecd406d9f9780f895fd97bdea10b2732542f2cbe8a04ba7e [2022-11-21 17:01:50,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:01:50,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:01:50,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:01:50,576 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:01:50,577 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:01:50,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/eca-rers2012/Problem18_label27.c [2022-11-21 17:01:53,627 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:01:54,204 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:01:54,205 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/sv-benchmarks/c/eca-rers2012/Problem18_label27.c [2022-11-21 17:01:54,244 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/data/3fa521112/4c9d055d9bb347428c038f3530cc2b90/FLAG4f22d50e7 [2022-11-21 17:01:54,267 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/data/3fa521112/4c9d055d9bb347428c038f3530cc2b90 [2022-11-21 17:01:54,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:01:54,274 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:01:54,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:01:54,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:01:54,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:01:54,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:01:54" (1/1) ... [2022-11-21 17:01:54,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d23b743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:54, skipping insertion in model container [2022-11-21 17:01:54,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:01:54" (1/1) ... [2022-11-21 17:01:54,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:01:54,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:01:54,752 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/sv-benchmarks/c/eca-rers2012/Problem18_label27.c[3401,3414] [2022-11-21 17:01:55,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:01:55,735 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:01:55,770 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/sv-benchmarks/c/eca-rers2012/Problem18_label27.c[3401,3414] [2022-11-21 17:01:56,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:01:56,291 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:01:56,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:56 WrapperNode [2022-11-21 17:01:56,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:01:56,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:01:56,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:01:56,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:01:56,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:56" (1/1) ... [2022-11-21 17:01:56,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:56" (1/1) ... [2022-11-21 17:01:56,567 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4132 [2022-11-21 17:01:56,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:01:56,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:01:56,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:01:56,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:01:56,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:56" (1/1) ... [2022-11-21 17:01:56,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:56" (1/1) ... [2022-11-21 17:01:56,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:56" (1/1) ... [2022-11-21 17:01:56,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:56" (1/1) ... [2022-11-21 17:01:56,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:56" (1/1) ... [2022-11-21 17:01:56,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:56" (1/1) ... [2022-11-21 17:01:56,813 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:56" (1/1) ... [2022-11-21 17:01:56,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:56" (1/1) ... [2022-11-21 17:01:56,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:01:56,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:01:56,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:01:56,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:01:56,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:56" (1/1) ... [2022-11-21 17:01:56,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:01:56,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:01:56,896 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:01:56,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:01:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:01:56,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:01:56,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:01:56,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:01:57,054 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:01:57,057 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:02:01,560 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:02:01,572 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:02:01,573 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 17:02:01,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:02:01 BoogieIcfgContainer [2022-11-21 17:02:01,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:02:01,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:02:01,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:02:01,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:02:01,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:01:54" (1/3) ... [2022-11-21 17:02:01,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a522dca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:02:01, skipping insertion in model container [2022-11-21 17:02:01,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:56" (2/3) ... [2022-11-21 17:02:01,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a522dca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:02:01, skipping insertion in model container [2022-11-21 17:02:01,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:02:01" (3/3) ... [2022-11-21 17:02:01,585 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label27.c [2022-11-21 17:02:01,605 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:02:01,605 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 17:02:01,677 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:02:01,685 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;@4fa7fab3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:02:01,686 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 17:02:01,696 INFO L276 IsEmpty]: Start isEmpty. Operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:01,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-21 17:02:01,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:02:01,706 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] [2022-11-21 17:02:01,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:02:01,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:01,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1722039382, now seen corresponding path program 1 times [2022-11-21 17:02:01,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:01,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565827562] [2022-11-21 17:02:01,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:01,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:02,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:02,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565827562] [2022-11-21 17:02:02,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565827562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:02,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:02,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:02:02,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068766330] [2022-11-21 17:02:02,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:02,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:02:02,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:02,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:02:02,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:02:02,087 INFO L87 Difference]: Start difference. First operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 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 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:06,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:02:06,944 INFO L93 Difference]: Finished difference Result 2221 states and 4282 transitions. [2022-11-21 17:02:06,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:02:06,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-11-21 17:02:06,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:02:06,990 INFO L225 Difference]: With dead ends: 2221 [2022-11-21 17:02:06,993 INFO L226 Difference]: Without dead ends: 1384 [2022-11-21 17:02:07,006 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 [2022-11-21 17:02:07,013 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 765 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-21 17:02:07,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 487 Invalid, 2786 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [717 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-21 17:02:07,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2022-11-21 17:02:07,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1384. [2022-11-21 17:02:07,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 1.5994215473608098) internal successors, (2212), 1383 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:07,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2212 transitions. [2022-11-21 17:02:07,141 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2212 transitions. Word has length 30 [2022-11-21 17:02:07,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:02:07,142 INFO L495 AbstractCegarLoop]: Abstraction has 1384 states and 2212 transitions. [2022-11-21 17:02:07,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:07,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2212 transitions. [2022-11-21 17:02:07,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-21 17:02:07,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:02:07,146 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:07,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:02:07,146 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:02:07,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:07,148 INFO L85 PathProgramCache]: Analyzing trace with hash 615426746, now seen corresponding path program 1 times [2022-11-21 17:02:07,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:07,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760204626] [2022-11-21 17:02:07,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:07,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:07,354 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:07,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:07,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760204626] [2022-11-21 17:02:07,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760204626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:07,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:07,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:02:07,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808785979] [2022-11-21 17:02:07,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:07,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:02:07,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:07,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:02:07,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:02:07,360 INFO L87 Difference]: Start difference. First operand 1384 states and 2212 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:11,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:02:11,447 INFO L93 Difference]: Finished difference Result 4146 states and 6631 transitions. [2022-11-21 17:02:11,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:02:11,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-11-21 17:02:11,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:02:11,460 INFO L225 Difference]: With dead ends: 4146 [2022-11-21 17:02:11,460 INFO L226 Difference]: Without dead ends: 2764 [2022-11-21 17:02:11,468 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 [2022-11-21 17:02:11,470 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 714 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 2619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:02:11,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 529 Invalid, 2619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-21 17:02:11,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2022-11-21 17:02:11,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2764. [2022-11-21 17:02:11,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2763 states have (on average 1.3503438291711907) internal successors, (3731), 2763 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:11,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3731 transitions. [2022-11-21 17:02:11,550 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3731 transitions. Word has length 95 [2022-11-21 17:02:11,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:02:11,552 INFO L495 AbstractCegarLoop]: Abstraction has 2764 states and 3731 transitions. [2022-11-21 17:02:11,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:11,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3731 transitions. [2022-11-21 17:02:11,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-21 17:02:11,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:02:11,571 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:11,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:02:11,575 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:02:11,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:11,575 INFO L85 PathProgramCache]: Analyzing trace with hash -407061005, now seen corresponding path program 1 times [2022-11-21 17:02:11,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:11,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907210466] [2022-11-21 17:02:11,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:11,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:12,508 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-21 17:02:12,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:12,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907210466] [2022-11-21 17:02:12,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907210466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:12,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:12,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:02:12,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111092851] [2022-11-21 17:02:12,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:12,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:02:12,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:12,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:02:12,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:02:12,515 INFO L87 Difference]: Start difference. First operand 2764 states and 3731 transitions. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:18,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:02:18,218 INFO L93 Difference]: Finished difference Result 7596 states and 9794 transitions. [2022-11-21 17:02:18,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:02:18,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 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 213 [2022-11-21 17:02:18,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:02:18,234 INFO L225 Difference]: With dead ends: 7596 [2022-11-21 17:02:18,235 INFO L226 Difference]: Without dead ends: 4834 [2022-11-21 17:02:18,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:02:18,239 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 1873 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4348 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 4465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 4348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:02:18,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1873 Valid, 641 Invalid, 4465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 4348 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-21 17:02:18,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4834 states. [2022-11-21 17:02:18,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4834 to 4144. [2022-11-21 17:02:18,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4144 states, 4143 states have (on average 1.2698527636978034) internal successors, (5261), 4143 states have internal predecessors, (5261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:18,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4144 states to 4144 states and 5261 transitions. [2022-11-21 17:02:18,325 INFO L78 Accepts]: Start accepts. Automaton has 4144 states and 5261 transitions. Word has length 213 [2022-11-21 17:02:18,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:02:18,326 INFO L495 AbstractCegarLoop]: Abstraction has 4144 states and 5261 transitions. [2022-11-21 17:02:18,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:18,327 INFO L276 IsEmpty]: Start isEmpty. Operand 4144 states and 5261 transitions. [2022-11-21 17:02:18,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-21 17:02:18,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:02:18,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:18,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:02:18,333 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:02:18,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:18,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1785907472, now seen corresponding path program 1 times [2022-11-21 17:02:18,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:18,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178033992] [2022-11-21 17:02:18,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:18,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:18,806 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:18,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:18,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178033992] [2022-11-21 17:02:18,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178033992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:18,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:18,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:02:18,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769502774] [2022-11-21 17:02:18,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:18,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:02:18,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:18,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:02:18,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:02:18,811 INFO L87 Difference]: Start difference. First operand 4144 states and 5261 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:23,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:02:23,062 INFO L93 Difference]: Finished difference Result 12426 states and 15778 transitions. [2022-11-21 17:02:23,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:02:23,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 329 [2022-11-21 17:02:23,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:02:23,091 INFO L225 Difference]: With dead ends: 12426 [2022-11-21 17:02:23,091 INFO L226 Difference]: Without dead ends: 8284 [2022-11-21 17:02:23,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:02:23,098 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 693 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1991 mSolverCounterSat, 991 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 2982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 991 IncrementalHoareTripleChecker+Valid, 1991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:02:23,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 148 Invalid, 2982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [991 Valid, 1991 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-21 17:02:23,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8284 states. [2022-11-21 17:02:23,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8284 to 7594. [2022-11-21 17:02:23,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7594 states, 7593 states have (on average 1.2641907019623337) internal successors, (9599), 7593 states have internal predecessors, (9599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:23,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7594 states to 7594 states and 9599 transitions. [2022-11-21 17:02:23,324 INFO L78 Accepts]: Start accepts. Automaton has 7594 states and 9599 transitions. Word has length 329 [2022-11-21 17:02:23,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:02:23,328 INFO L495 AbstractCegarLoop]: Abstraction has 7594 states and 9599 transitions. [2022-11-21 17:02:23,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:23,329 INFO L276 IsEmpty]: Start isEmpty. Operand 7594 states and 9599 transitions. [2022-11-21 17:02:23,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-11-21 17:02:23,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:02:23,338 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:23,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:02:23,339 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:02:23,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:23,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1809393790, now seen corresponding path program 1 times [2022-11-21 17:02:23,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:23,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336896041] [2022-11-21 17:02:23,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:23,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:23,809 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-21 17:02:23,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:23,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336896041] [2022-11-21 17:02:23,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336896041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:23,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:23,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:02:23,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495236860] [2022-11-21 17:02:23,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:23,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:02:23,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:23,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:02:23,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:02:23,815 INFO L87 Difference]: Start difference. First operand 7594 states and 9599 transitions. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 2 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:27,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:02:27,367 INFO L93 Difference]: Finished difference Result 20706 states and 26458 transitions. [2022-11-21 17:02:27,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:02:27,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 2 states have internal predecessors, (331), 0 states have call successors, (0), 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 414 [2022-11-21 17:02:27,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:02:27,435 INFO L225 Difference]: With dead ends: 20706 [2022-11-21 17:02:27,435 INFO L226 Difference]: Without dead ends: 13114 [2022-11-21 17:02:27,443 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 [2022-11-21 17:02:27,446 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 497 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1937 mSolverCounterSat, 1073 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 3010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1073 IncrementalHoareTripleChecker+Valid, 1937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:02:27,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 116 Invalid, 3010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1073 Valid, 1937 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-21 17:02:27,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13114 states. [2022-11-21 17:02:27,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13114 to 12424. [2022-11-21 17:02:27,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12424 states, 12423 states have (on average 1.2751348305562265) internal successors, (15841), 12423 states have internal predecessors, (15841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:27,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12424 states to 12424 states and 15841 transitions. [2022-11-21 17:02:27,750 INFO L78 Accepts]: Start accepts. Automaton has 12424 states and 15841 transitions. Word has length 414 [2022-11-21 17:02:27,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:02:27,753 INFO L495 AbstractCegarLoop]: Abstraction has 12424 states and 15841 transitions. [2022-11-21 17:02:27,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 2 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:27,757 INFO L276 IsEmpty]: Start isEmpty. Operand 12424 states and 15841 transitions. [2022-11-21 17:02:27,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2022-11-21 17:02:27,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:02:27,767 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:27,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:02:27,768 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:02:27,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:27,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1146126951, now seen corresponding path program 1 times [2022-11-21 17:02:27,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:27,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861319936] [2022-11-21 17:02:27,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:27,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:28,284 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-21 17:02:28,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:28,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861319936] [2022-11-21 17:02:28,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861319936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:28,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:28,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:02:28,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252873540] [2022-11-21 17:02:28,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:28,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:02:28,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:28,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:02:28,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:02:28,287 INFO L87 Difference]: Start difference. First operand 12424 states and 15841 transitions. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:32,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:02:32,242 INFO L93 Difference]: Finished difference Result 30366 states and 38271 transitions. [2022-11-21 17:02:32,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:02:32,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 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 415 [2022-11-21 17:02:32,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:02:32,282 INFO L225 Difference]: With dead ends: 30366 [2022-11-21 17:02:32,282 INFO L226 Difference]: Without dead ends: 17944 [2022-11-21 17:02:32,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:02:32,298 INFO L413 NwaCegarLoop]: 1293 mSDtfsCounter, 663 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2366 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 2780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 2366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:02:32,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 1300 Invalid, 2780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 2366 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-21 17:02:32,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17944 states. [2022-11-21 17:02:32,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17944 to 17944. [2022-11-21 17:02:32,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17944 states, 17943 states have (on average 1.2132307863790894) internal successors, (21769), 17943 states have internal predecessors, (21769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:32,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17944 states to 17944 states and 21769 transitions. [2022-11-21 17:02:32,804 INFO L78 Accepts]: Start accepts. Automaton has 17944 states and 21769 transitions. Word has length 415 [2022-11-21 17:02:32,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:02:32,805 INFO L495 AbstractCegarLoop]: Abstraction has 17944 states and 21769 transitions. [2022-11-21 17:02:32,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:32,806 INFO L276 IsEmpty]: Start isEmpty. Operand 17944 states and 21769 transitions. [2022-11-21 17:02:32,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2022-11-21 17:02:32,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:02:32,817 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:32,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:02:32,817 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:02:32,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:32,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1448398219, now seen corresponding path program 1 times [2022-11-21 17:02:32,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:32,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637625979] [2022-11-21 17:02:32,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:32,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:33,650 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:33,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:33,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637625979] [2022-11-21 17:02:33,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637625979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:33,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:33,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:02:33,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007765970] [2022-11-21 17:02:33,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:33,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:02:33,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:33,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:02:33,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:02:33,654 INFO L87 Difference]: Start difference. First operand 17944 states and 21769 transitions. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:37,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:02:37,633 INFO L93 Difference]: Finished difference Result 41406 states and 50412 transitions. [2022-11-21 17:02:37,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:02:37,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 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 436 [2022-11-21 17:02:37,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:02:37,690 INFO L225 Difference]: With dead ends: 41406 [2022-11-21 17:02:37,690 INFO L226 Difference]: Without dead ends: 23464 [2022-11-21 17:02:37,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:02:37,711 INFO L413 NwaCegarLoop]: 1088 mSDtfsCounter, 586 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2218 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 2535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 2218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:02:37,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 1095 Invalid, 2535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 2218 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-21 17:02:37,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23464 states. [2022-11-21 17:02:38,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23464 to 22774. [2022-11-21 17:02:38,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22774 states, 22773 states have (on average 1.1927721424493918) internal successors, (27163), 22773 states have internal predecessors, (27163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:38,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22774 states to 22774 states and 27163 transitions. [2022-11-21 17:02:38,242 INFO L78 Accepts]: Start accepts. Automaton has 22774 states and 27163 transitions. Word has length 436 [2022-11-21 17:02:38,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:02:38,244 INFO L495 AbstractCegarLoop]: Abstraction has 22774 states and 27163 transitions. [2022-11-21 17:02:38,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:38,244 INFO L276 IsEmpty]: Start isEmpty. Operand 22774 states and 27163 transitions. [2022-11-21 17:02:38,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2022-11-21 17:02:38,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:02:38,257 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:38,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:02:38,257 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:02:38,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:38,258 INFO L85 PathProgramCache]: Analyzing trace with hash -923099618, now seen corresponding path program 1 times [2022-11-21 17:02:38,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:38,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740494111] [2022-11-21 17:02:38,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:38,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:39,011 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:39,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:39,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740494111] [2022-11-21 17:02:39,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740494111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:39,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:39,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:02:39,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190377829] [2022-11-21 17:02:39,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:39,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:02:39,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:39,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:02:39,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:02:39,015 INFO L87 Difference]: Start difference. First operand 22774 states and 27163 transitions. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:43,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:02:43,129 INFO L93 Difference]: Finished difference Result 48996 states and 58500 transitions. [2022-11-21 17:02:43,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:02:43,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 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 443 [2022-11-21 17:02:43,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:02:43,198 INFO L225 Difference]: With dead ends: 48996 [2022-11-21 17:02:43,198 INFO L226 Difference]: Without dead ends: 26224 [2022-11-21 17:02:43,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:02:43,224 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 584 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 2678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 2419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:02:43,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 636 Invalid, 2678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-21 17:02:43,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26224 states. [2022-11-21 17:02:43,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26224 to 26224. [2022-11-21 17:02:43,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26224 states, 26223 states have (on average 1.1795370476299432) internal successors, (30931), 26223 states have internal predecessors, (30931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:43,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26224 states to 26224 states and 30931 transitions. [2022-11-21 17:02:43,771 INFO L78 Accepts]: Start accepts. Automaton has 26224 states and 30931 transitions. Word has length 443 [2022-11-21 17:02:43,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:02:43,772 INFO L495 AbstractCegarLoop]: Abstraction has 26224 states and 30931 transitions. [2022-11-21 17:02:43,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:43,773 INFO L276 IsEmpty]: Start isEmpty. Operand 26224 states and 30931 transitions. [2022-11-21 17:02:43,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2022-11-21 17:02:43,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:02:43,789 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:43,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:02:43,792 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:02:43,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:43,793 INFO L85 PathProgramCache]: Analyzing trace with hash -237194847, now seen corresponding path program 1 times [2022-11-21 17:02:43,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:43,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824868803] [2022-11-21 17:02:43,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:43,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 411 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-21 17:02:44,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:44,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824868803] [2022-11-21 17:02:44,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824868803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:44,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:44,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:02:44,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391459521] [2022-11-21 17:02:44,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:44,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:02:44,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:44,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:02:44,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:02:44,543 INFO L87 Difference]: Start difference. First operand 26224 states and 30931 transitions. Second operand has 4 states, 4 states have (on average 89.0) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:47,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:02:47,953 INFO L93 Difference]: Finished difference Result 54569 states and 64019 transitions. [2022-11-21 17:02:47,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:02:47,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.0) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 469 [2022-11-21 17:02:47,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:02:48,020 INFO L225 Difference]: With dead ends: 54569 [2022-11-21 17:02:48,021 INFO L226 Difference]: Without dead ends: 28294 [2022-11-21 17:02:48,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:02:48,038 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 531 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2590 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 2590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:02:48,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 636 Invalid, 2971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 2590 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-21 17:02:48,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28294 states. [2022-11-21 17:02:48,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28294 to 28294. [2022-11-21 17:02:48,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28294 states, 28293 states have (on average 1.1284063195843494) internal successors, (31926), 28293 states have internal predecessors, (31926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:48,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28294 states to 28294 states and 31926 transitions. [2022-11-21 17:02:48,447 INFO L78 Accepts]: Start accepts. Automaton has 28294 states and 31926 transitions. Word has length 469 [2022-11-21 17:02:48,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:02:48,452 INFO L495 AbstractCegarLoop]: Abstraction has 28294 states and 31926 transitions. [2022-11-21 17:02:48,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.0) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:48,453 INFO L276 IsEmpty]: Start isEmpty. Operand 28294 states and 31926 transitions. [2022-11-21 17:02:48,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2022-11-21 17:02:48,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:02:48,471 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:48,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:02:48,471 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:02:48,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:48,473 INFO L85 PathProgramCache]: Analyzing trace with hash -84053950, now seen corresponding path program 1 times [2022-11-21 17:02:48,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:48,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620758141] [2022-11-21 17:02:48,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:48,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:49,497 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 410 proven. 0 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2022-11-21 17:02:49,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:49,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620758141] [2022-11-21 17:02:49,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620758141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:49,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:49,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:02:49,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778683944] [2022-11-21 17:02:49,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:49,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:02:49,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:49,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:02:49,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:02:49,501 INFO L87 Difference]: Start difference. First operand 28294 states and 31926 transitions. Second operand has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:52,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:02:52,814 INFO L93 Difference]: Finished difference Result 55896 states and 63156 transitions. [2022-11-21 17:02:52,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:02:52,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 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 1037 [2022-11-21 17:02:52,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:02:52,860 INFO L225 Difference]: With dead ends: 55896 [2022-11-21 17:02:52,860 INFO L226 Difference]: Without dead ends: 27604 [2022-11-21 17:02:52,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:02:52,880 INFO L413 NwaCegarLoop]: 1084 mSDtfsCounter, 587 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1882 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 2282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 1882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:02:52,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 1091 Invalid, 2282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 1882 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-21 17:02:52,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27604 states. [2022-11-21 17:02:53,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27604 to 27604. [2022-11-21 17:02:53,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27604 states, 27603 states have (on average 1.0922001231750171) internal successors, (30148), 27603 states have internal predecessors, (30148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:53,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27604 states to 27604 states and 30148 transitions. [2022-11-21 17:02:53,419 INFO L78 Accepts]: Start accepts. Automaton has 27604 states and 30148 transitions. Word has length 1037 [2022-11-21 17:02:53,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:02:53,421 INFO L495 AbstractCegarLoop]: Abstraction has 27604 states and 30148 transitions. [2022-11-21 17:02:53,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:53,422 INFO L276 IsEmpty]: Start isEmpty. Operand 27604 states and 30148 transitions. [2022-11-21 17:02:53,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1040 [2022-11-21 17:02:53,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:02:53,471 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:53,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 17:02:53,472 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:02:53,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:53,473 INFO L85 PathProgramCache]: Analyzing trace with hash 589029969, now seen corresponding path program 1 times [2022-11-21 17:02:53,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:53,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618269640] [2022-11-21 17:02:53,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:53,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:55,802 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2022-11-21 17:02:55,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:55,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618269640] [2022-11-21 17:02:55,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618269640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:55,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:55,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:02:55,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71912354] [2022-11-21 17:02:55,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:55,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:02:55,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:55,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:02:55,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:02:55,806 INFO L87 Difference]: Start difference. First operand 27604 states and 30148 transitions. Second operand has 5 states, 5 states have (on average 123.6) internal successors, (618), 5 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:59,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:02:59,538 INFO L93 Difference]: Finished difference Result 65712 states and 72468 transitions. [2022-11-21 17:02:59,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:02:59,539 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 123.6) internal successors, (618), 5 states have internal predecessors, (618), 0 states have call successors, (0), 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 1039 [2022-11-21 17:02:59,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:02:59,577 INFO L225 Difference]: With dead ends: 65712 [2022-11-21 17:02:59,577 INFO L226 Difference]: Without dead ends: 31900 [2022-11-21 17:02:59,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:02:59,592 INFO L413 NwaCegarLoop]: 1093 mSDtfsCounter, 712 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 3375 mSolverCounterSat, 730 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 4105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 730 IncrementalHoareTripleChecker+Valid, 3375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:02:59,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 1117 Invalid, 4105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [730 Valid, 3375 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-21 17:02:59,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31900 states. [2022-11-21 17:02:59,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31900 to 30364. [2022-11-21 17:02:59,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30364 states, 30363 states have (on average 1.0528603892895958) internal successors, (31968), 30363 states have internal predecessors, (31968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:59,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30364 states to 30364 states and 31968 transitions. [2022-11-21 17:02:59,949 INFO L78 Accepts]: Start accepts. Automaton has 30364 states and 31968 transitions. Word has length 1039 [2022-11-21 17:02:59,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:02:59,950 INFO L495 AbstractCegarLoop]: Abstraction has 30364 states and 31968 transitions. [2022-11-21 17:02:59,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.6) internal successors, (618), 5 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:59,951 INFO L276 IsEmpty]: Start isEmpty. Operand 30364 states and 31968 transitions. [2022-11-21 17:02:59,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1119 [2022-11-21 17:02:59,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:02:59,967 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:59,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 17:02:59,967 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:02:59,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:59,968 INFO L85 PathProgramCache]: Analyzing trace with hash -261123617, now seen corresponding path program 1 times [2022-11-21 17:02:59,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:59,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947654616] [2022-11-21 17:02:59,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:59,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:02,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1236 backedges. 500 proven. 650 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-21 17:03:02,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:02,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947654616] [2022-11-21 17:03:02,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947654616] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:03:02,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875441733] [2022-11-21 17:03:02,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:02,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:03:02,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:03:02,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:03:02,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:03:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:03,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:03:03,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:03:03,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1236 backedges. 474 proven. 0 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2022-11-21 17:03:03,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:03:03,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875441733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:03:03,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:03:03,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-21 17:03:03,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909729080] [2022-11-21 17:03:03,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:03:03,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:03:03,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:03,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:03:03,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:03:03,345 INFO L87 Difference]: Start difference. First operand 30364 states and 31968 transitions. Second operand has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:06,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:03:06,163 INFO L93 Difference]: Finished difference Result 71076 states and 75465 transitions. [2022-11-21 17:03:06,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:03:06,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 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 1118 [2022-11-21 17:03:06,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:03:06,206 INFO L225 Difference]: With dead ends: 71076 [2022-11-21 17:03:06,207 INFO L226 Difference]: Without dead ends: 40714 [2022-11-21 17:03:06,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1124 GetRequests, 1118 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:03:06,226 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 654 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1745 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 2004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:03:06,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 163 Invalid, 2004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1745 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-21 17:03:06,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40714 states. [2022-11-21 17:03:06,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40714 to 40714. [2022-11-21 17:03:06,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40714 states, 40713 states have (on average 1.0548719082356988) internal successors, (42947), 40713 states have internal predecessors, (42947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:06,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40714 states to 40714 states and 42947 transitions. [2022-11-21 17:03:06,804 INFO L78 Accepts]: Start accepts. Automaton has 40714 states and 42947 transitions. Word has length 1118 [2022-11-21 17:03:06,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:03:06,805 INFO L495 AbstractCegarLoop]: Abstraction has 40714 states and 42947 transitions. [2022-11-21 17:03:06,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:06,805 INFO L276 IsEmpty]: Start isEmpty. Operand 40714 states and 42947 transitions. [2022-11-21 17:03:06,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1158 [2022-11-21 17:03:06,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:03:06,824 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:03:06,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:03:07,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-21 17:03:07,032 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:03:07,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:07,033 INFO L85 PathProgramCache]: Analyzing trace with hash 487120714, now seen corresponding path program 1 times [2022-11-21 17:03:07,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:07,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712469280] [2022-11-21 17:03:07,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:07,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:08,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 812 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2022-11-21 17:03:08,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:08,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712469280] [2022-11-21 17:03:08,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712469280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:03:08,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:03:08,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:03:08,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280810139] [2022-11-21 17:03:08,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:03:08,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:03:08,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:08,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:03:08,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:03:08,636 INFO L87 Difference]: Start difference. First operand 40714 states and 42947 transitions. Second operand has 4 states, 4 states have (on average 206.75) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:12,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:03:12,302 INFO L93 Difference]: Finished difference Result 81426 states and 85892 transitions. [2022-11-21 17:03:12,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:03:12,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 206.75) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 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 1157 [2022-11-21 17:03:12,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:03:12,357 INFO L225 Difference]: With dead ends: 81426 [2022-11-21 17:03:12,357 INFO L226 Difference]: Without dead ends: 40714 [2022-11-21 17:03:12,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:03:12,377 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 991 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2660 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 2951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 2660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:03:12,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 69 Invalid, 2951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 2660 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-21 17:03:12,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40714 states. [2022-11-21 17:03:12,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40714 to 40714. [2022-11-21 17:03:12,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40714 states, 40713 states have (on average 1.0546262864441334) internal successors, (42937), 40713 states have internal predecessors, (42937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:12,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40714 states to 40714 states and 42937 transitions. [2022-11-21 17:03:12,784 INFO L78 Accepts]: Start accepts. Automaton has 40714 states and 42937 transitions. Word has length 1157 [2022-11-21 17:03:12,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:03:12,785 INFO L495 AbstractCegarLoop]: Abstraction has 40714 states and 42937 transitions. [2022-11-21 17:03:12,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 206.75) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:12,786 INFO L276 IsEmpty]: Start isEmpty. Operand 40714 states and 42937 transitions. [2022-11-21 17:03:12,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1189 [2022-11-21 17:03:12,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:03:12,805 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:03:12,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 17:03:12,805 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:03:12,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:12,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1816786544, now seen corresponding path program 1 times [2022-11-21 17:03:12,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:12,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550883450] [2022-11-21 17:03:12,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:12,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:13,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1398 backedges. 634 proven. 2 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2022-11-21 17:03:13,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:13,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550883450] [2022-11-21 17:03:13,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550883450] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:03:13,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607099890] [2022-11-21 17:03:13,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:13,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:03:13,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:03:13,761 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:03:13,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:03:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:14,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:03:14,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:03:14,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1398 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 1259 trivial. 0 not checked. [2022-11-21 17:03:14,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:03:14,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607099890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:03:14,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:03:14,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-21 17:03:14,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215639436] [2022-11-21 17:03:14,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:03:14,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:03:14,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:14,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:03:14,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:03:14,330 INFO L87 Difference]: Start difference. First operand 40714 states and 42937 transitions. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:16,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:03:16,919 INFO L93 Difference]: Finished difference Result 100746 states and 106767 transitions. [2022-11-21 17:03:16,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:03:16,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 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 1188 [2022-11-21 17:03:16,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:03:16,974 INFO L225 Difference]: With dead ends: 100746 [2022-11-21 17:03:16,974 INFO L226 Difference]: Without dead ends: 60034 [2022-11-21 17:03:16,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1192 GetRequests, 1188 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:03:16,999 INFO L413 NwaCegarLoop]: 866 mSDtfsCounter, 697 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1682 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 1682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:03:16,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 873 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 1682 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-21 17:03:17,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60034 states. [2022-11-21 17:03:17,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60034 to 58654. [2022-11-21 17:03:17,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58654 states, 58653 states have (on average 1.051165328286703) internal successors, (61654), 58653 states have internal predecessors, (61654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:17,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58654 states to 58654 states and 61654 transitions. [2022-11-21 17:03:17,835 INFO L78 Accepts]: Start accepts. Automaton has 58654 states and 61654 transitions. Word has length 1188 [2022-11-21 17:03:17,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:03:17,836 INFO L495 AbstractCegarLoop]: Abstraction has 58654 states and 61654 transitions. [2022-11-21 17:03:17,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:17,836 INFO L276 IsEmpty]: Start isEmpty. Operand 58654 states and 61654 transitions. [2022-11-21 17:03:17,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1203 [2022-11-21 17:03:17,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:03:17,849 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:03:17,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-21 17:03:18,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-21 17:03:18,063 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:03:18,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:18,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1055945293, now seen corresponding path program 1 times [2022-11-21 17:03:18,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:18,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28432606] [2022-11-21 17:03:18,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:18,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:18,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 1287 trivial. 0 not checked. [2022-11-21 17:03:18,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:18,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28432606] [2022-11-21 17:03:18,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28432606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:03:18,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:03:18,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:03:19,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966354835] [2022-11-21 17:03:19,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:03:19,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:03:19,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:19,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:03:19,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:03:19,003 INFO L87 Difference]: Start difference. First operand 58654 states and 61654 transitions. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:21,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:03:21,636 INFO L93 Difference]: Finished difference Result 135246 states and 142790 transitions. [2022-11-21 17:03:21,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:03:21,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 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 1202 [2022-11-21 17:03:21,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:03:21,848 INFO L225 Difference]: With dead ends: 135246 [2022-11-21 17:03:21,849 INFO L226 Difference]: Without dead ends: 76594 [2022-11-21 17:03:21,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:03:21,901 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 674 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:03:21,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 276 Invalid, 1929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1688 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-21 17:03:21,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76594 states. [2022-11-21 17:03:22,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76594 to 71764. [2022-11-21 17:03:22,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71764 states, 71763 states have (on average 1.0474339144127196) internal successors, (75167), 71763 states have internal predecessors, (75167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:22,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71764 states to 71764 states and 75167 transitions. [2022-11-21 17:03:22,653 INFO L78 Accepts]: Start accepts. Automaton has 71764 states and 75167 transitions. Word has length 1202 [2022-11-21 17:03:22,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:03:22,654 INFO L495 AbstractCegarLoop]: Abstraction has 71764 states and 75167 transitions. [2022-11-21 17:03:22,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:22,655 INFO L276 IsEmpty]: Start isEmpty. Operand 71764 states and 75167 transitions. [2022-11-21 17:03:22,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1245 [2022-11-21 17:03:22,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:03:22,668 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:03:22,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 17:03:22,668 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:03:22,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:22,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1752078724, now seen corresponding path program 1 times [2022-11-21 17:03:22,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:22,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632329003] [2022-11-21 17:03:22,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:22,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:24,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 405 proven. 694 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2022-11-21 17:03:24,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:24,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632329003] [2022-11-21 17:03:24,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632329003] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:03:24,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466930314] [2022-11-21 17:03:24,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:24,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:03:24,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:03:24,791 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:03:24,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 17:03:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:25,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:03:25,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:03:25,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 494 proven. 0 refuted. 0 times theorem prover too weak. 1002 trivial. 0 not checked. [2022-11-21 17:03:25,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:03:25,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466930314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:03:25,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:03:25,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-21 17:03:25,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940069155] [2022-11-21 17:03:25,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:03:25,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:03:25,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:25,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:03:25,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:03:25,400 INFO L87 Difference]: Start difference. First operand 71764 states and 75167 transitions. Second operand has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:28,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:03:28,144 INFO L93 Difference]: Finished difference Result 161466 states and 169936 transitions. [2022-11-21 17:03:28,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:03:28,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 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 1244 [2022-11-21 17:03:28,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:03:28,228 INFO L225 Difference]: With dead ends: 161466 [2022-11-21 17:03:28,228 INFO L226 Difference]: Without dead ends: 85564 [2022-11-21 17:03:28,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1249 GetRequests, 1244 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:03:28,254 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 624 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1650 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 1650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:03:28,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 881 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 1650 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-21 17:03:28,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85564 states. [2022-11-21 17:03:29,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85564 to 85564. [2022-11-21 17:03:29,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85564 states, 85563 states have (on average 1.046877739209705) internal successors, (89574), 85563 states have internal predecessors, (89574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:29,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85564 states to 85564 states and 89574 transitions. [2022-11-21 17:03:29,360 INFO L78 Accepts]: Start accepts. Automaton has 85564 states and 89574 transitions. Word has length 1244 [2022-11-21 17:03:29,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:03:29,361 INFO L495 AbstractCegarLoop]: Abstraction has 85564 states and 89574 transitions. [2022-11-21 17:03:29,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:29,361 INFO L276 IsEmpty]: Start isEmpty. Operand 85564 states and 89574 transitions. [2022-11-21 17:03:29,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1363 [2022-11-21 17:03:29,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:03:29,379 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:03:29,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:03:29,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-21 17:03:29,580 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:03:29,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:29,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1812289283, now seen corresponding path program 1 times [2022-11-21 17:03:29,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:29,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199532778] [2022-11-21 17:03:29,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:29,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:31,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1848 backedges. 842 proven. 0 refuted. 0 times theorem prover too weak. 1006 trivial. 0 not checked. [2022-11-21 17:03:31,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:31,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199532778] [2022-11-21 17:03:31,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199532778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:03:31,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:03:31,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:03:31,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231130634] [2022-11-21 17:03:31,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:03:31,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:03:31,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:31,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:03:31,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:03:31,027 INFO L87 Difference]: Start difference. First operand 85564 states and 89574 transitions. Second operand has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:33,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:03:33,587 INFO L93 Difference]: Finished difference Result 170436 states and 178455 transitions. [2022-11-21 17:03:33,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:03:33,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 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 1362 [2022-11-21 17:03:33,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:03:33,665 INFO L225 Difference]: With dead ends: 170436 [2022-11-21 17:03:33,665 INFO L226 Difference]: Without dead ends: 85564 [2022-11-21 17:03:33,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:03:33,697 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 501 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1663 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 1787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:03:33,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 934 Invalid, 1787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1663 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-21 17:03:33,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85564 states. [2022-11-21 17:03:34,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85564 to 84184. [2022-11-21 17:03:34,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84184 states, 84183 states have (on average 1.0425501585830868) internal successors, (87765), 84183 states have internal predecessors, (87765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:34,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84184 states to 84184 states and 87765 transitions. [2022-11-21 17:03:34,869 INFO L78 Accepts]: Start accepts. Automaton has 84184 states and 87765 transitions. Word has length 1362 [2022-11-21 17:03:34,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:03:34,870 INFO L495 AbstractCegarLoop]: Abstraction has 84184 states and 87765 transitions. [2022-11-21 17:03:34,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:34,871 INFO L276 IsEmpty]: Start isEmpty. Operand 84184 states and 87765 transitions. [2022-11-21 17:03:34,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1415 [2022-11-21 17:03:34,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:03:34,912 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:03:34,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 17:03:34,912 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:03:34,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:34,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1435573839, now seen corresponding path program 1 times [2022-11-21 17:03:34,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:34,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051917763] [2022-11-21 17:03:34,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:34,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:36,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1688 backedges. 702 proven. 0 refuted. 0 times theorem prover too weak. 986 trivial. 0 not checked. [2022-11-21 17:03:36,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:36,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051917763] [2022-11-21 17:03:36,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051917763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:03:36,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:03:36,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:03:36,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43947575] [2022-11-21 17:03:36,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:03:36,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:03:36,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:36,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:03:36,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:03:36,959 INFO L87 Difference]: Start difference. First operand 84184 states and 87765 transitions. Second operand has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:39,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:03:39,542 INFO L93 Difference]: Finished difference Result 167676 states and 174837 transitions. [2022-11-21 17:03:39,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:03:39,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1414 [2022-11-21 17:03:39,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:03:39,613 INFO L225 Difference]: With dead ends: 167676 [2022-11-21 17:03:39,613 INFO L226 Difference]: Without dead ends: 84184 [2022-11-21 17:03:39,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:03:39,633 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 587 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1676 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:03:39,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 746 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1676 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-21 17:03:39,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84184 states. [2022-11-21 17:03:40,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84184 to 84184. [2022-11-21 17:03:40,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84184 states, 84183 states have (on average 1.037656058824228) internal successors, (87353), 84183 states have internal predecessors, (87353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:40,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84184 states to 84184 states and 87353 transitions. [2022-11-21 17:03:40,649 INFO L78 Accepts]: Start accepts. Automaton has 84184 states and 87353 transitions. Word has length 1414 [2022-11-21 17:03:40,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:03:40,650 INFO L495 AbstractCegarLoop]: Abstraction has 84184 states and 87353 transitions. [2022-11-21 17:03:40,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:40,650 INFO L276 IsEmpty]: Start isEmpty. Operand 84184 states and 87353 transitions. [2022-11-21 17:03:40,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1488 [2022-11-21 17:03:40,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:03:40,696 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:03:40,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 17:03:40,696 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:03:40,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:40,697 INFO L85 PathProgramCache]: Analyzing trace with hash -588848989, now seen corresponding path program 1 times [2022-11-21 17:03:40,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:40,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030075516] [2022-11-21 17:03:40,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:40,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:42,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2479 backedges. 833 proven. 1353 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-11-21 17:03:42,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:42,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030075516] [2022-11-21 17:03:42,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030075516] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:03:42,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558093258] [2022-11-21 17:03:42,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:42,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:03:42,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:03:42,967 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:03:42,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 17:03:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:43,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 1751 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:03:43,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:03:44,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2479 backedges. 1447 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2022-11-21 17:03:44,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:03:44,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558093258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:03:44,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:03:44,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-21 17:03:44,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957584152] [2022-11-21 17:03:44,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:03:44,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:03:44,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:44,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:03:44,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:03:44,166 INFO L87 Difference]: Start difference. First operand 84184 states and 87353 transitions. Second operand has 3 states, 3 states have (on average 294.0) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:46,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:03:46,660 INFO L93 Difference]: Finished difference Result 166296 states and 172590 transitions. [2022-11-21 17:03:46,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:03:46,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 294.0) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 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 1487 [2022-11-21 17:03:46,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:03:46,738 INFO L225 Difference]: With dead ends: 166296 [2022-11-21 17:03:46,739 INFO L226 Difference]: Without dead ends: 82804 [2022-11-21 17:03:46,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1493 GetRequests, 1487 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:03:46,774 INFO L413 NwaCegarLoop]: 882 mSDtfsCounter, 425 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:03:46,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 889 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1606 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-21 17:03:46,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82804 states. [2022-11-21 17:03:47,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82804 to 79354. [2022-11-21 17:03:47,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79354 states, 79353 states have (on average 1.0266278527591899) internal successors, (81466), 79353 states have internal predecessors, (81466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:48,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79354 states to 79354 states and 81466 transitions. [2022-11-21 17:03:48,045 INFO L78 Accepts]: Start accepts. Automaton has 79354 states and 81466 transitions. Word has length 1487 [2022-11-21 17:03:48,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:03:48,046 INFO L495 AbstractCegarLoop]: Abstraction has 79354 states and 81466 transitions. [2022-11-21 17:03:48,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 294.0) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:48,047 INFO L276 IsEmpty]: Start isEmpty. Operand 79354 states and 81466 transitions. [2022-11-21 17:03:48,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1505 [2022-11-21 17:03:48,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:03:48,101 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:03:48,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 17:03:48,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1ade636-4296-406f-97d5-364599dcfeb3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:03:48,304 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:03:48,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:48,305 INFO L85 PathProgramCache]: Analyzing trace with hash -79090786, now seen corresponding path program 1 times [2022-11-21 17:03:48,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:48,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219800561] [2022-11-21 17:03:48,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:48,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:49,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2075 backedges. 498 proven. 0 refuted. 0 times theorem prover too weak. 1577 trivial. 0 not checked. [2022-11-21 17:03:49,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:49,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219800561] [2022-11-21 17:03:49,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219800561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:03:49,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:03:49,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:03:49,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039326323] [2022-11-21 17:03:49,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:03:49,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:03:49,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:49,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:03:49,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:03:49,493 INFO L87 Difference]: Start difference. First operand 79354 states and 81466 transitions. Second operand has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:51,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:03:51,947 INFO L93 Difference]: Finished difference Result 160086 states and 164329 transitions. [2022-11-21 17:03:51,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:03:51,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 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 1504 [2022-11-21 17:03:51,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:03:52,020 INFO L225 Difference]: With dead ends: 160086 [2022-11-21 17:03:52,021 INFO L226 Difference]: Without dead ends: 81424 [2022-11-21 17:03:52,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:03:52,055 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 619 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:03:52,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 70 Invalid, 1971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-21 17:03:52,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81424 states. [2022-11-21 17:03:53,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81424 to 79354. [2022-11-21 17:03:53,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79354 states, 79353 states have (on average 1.0260229606946176) internal successors, (81418), 79353 states have internal predecessors, (81418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:53,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79354 states to 79354 states and 81418 transitions. [2022-11-21 17:03:53,227 INFO L78 Accepts]: Start accepts. Automaton has 79354 states and 81418 transitions. Word has length 1504 [2022-11-21 17:03:53,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:03:53,228 INFO L495 AbstractCegarLoop]: Abstraction has 79354 states and 81418 transitions. [2022-11-21 17:03:53,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:53,228 INFO L276 IsEmpty]: Start isEmpty. Operand 79354 states and 81418 transitions. [2022-11-21 17:03:53,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1572 [2022-11-21 17:03:53,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:03:53,272 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:03:53,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 17:03:53,273 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:03:53,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:53,274 INFO L85 PathProgramCache]: Analyzing trace with hash 2076672547, now seen corresponding path program 1 times [2022-11-21 17:03:53,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:53,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203085731] [2022-11-21 17:03:53,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:53,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:54,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2276 backedges. 1833 proven. 0 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2022-11-21 17:03:54,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:54,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203085731] [2022-11-21 17:03:54,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203085731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:03:54,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:03:54,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:03:54,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22636697] [2022-11-21 17:03:54,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:03:54,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:03:54,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:54,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:03:54,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:03:54,782 INFO L87 Difference]: Start difference. First operand 79354 states and 81418 transitions. Second operand has 3 states, 3 states have (on average 386.3333333333333) internal successors, (1159), 3 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:57,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:03:57,779 INFO L93 Difference]: Finished difference Result 164916 states and 169355 transitions. [2022-11-21 17:03:57,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:03:57,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 386.3333333333333) internal successors, (1159), 3 states have internal predecessors, (1159), 0 states have call successors, (0), 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 1571 [2022-11-21 17:03:57,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:03:57,855 INFO L225 Difference]: With dead ends: 164916 [2022-11-21 17:03:57,855 INFO L226 Difference]: Without dead ends: 86254 [2022-11-21 17:03:57,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:03:57,882 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 340 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:03:57,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 205 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1736 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-21 17:03:57,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86254 states. [2022-11-21 17:03:58,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86254 to 84874. [2022-11-21 17:03:58,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84874 states, 84873 states have (on average 1.0223274775252436) internal successors, (86768), 84873 states have internal predecessors, (86768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:58,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84874 states to 84874 states and 86768 transitions. [2022-11-21 17:03:58,902 INFO L78 Accepts]: Start accepts. Automaton has 84874 states and 86768 transitions. Word has length 1571 [2022-11-21 17:03:58,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:03:58,902 INFO L495 AbstractCegarLoop]: Abstraction has 84874 states and 86768 transitions. [2022-11-21 17:03:58,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 386.3333333333333) internal successors, (1159), 3 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:58,903 INFO L276 IsEmpty]: Start isEmpty. Operand 84874 states and 86768 transitions. [2022-11-21 17:03:58,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1895 [2022-11-21 17:03:58,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:03:58,951 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:03:58,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 17:03:58,951 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:03:58,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:58,952 INFO L85 PathProgramCache]: Analyzing trace with hash -821382898, now seen corresponding path program 1 times [2022-11-21 17:03:58,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:58,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857498884] [2022-11-21 17:03:58,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:58,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:01,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3618 backedges. 2548 proven. 0 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2022-11-21 17:04:01,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:04:01,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857498884] [2022-11-21 17:04:01,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857498884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:04:01,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:04:01,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:04:01,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527868585] [2022-11-21 17:04:01,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:04:01,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:04:01,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:04:01,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:04:01,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:04:01,071 INFO L87 Difference]: Start difference. First operand 84874 states and 86768 transitions. Second operand has 3 states, 3 states have (on average 386.6666666666667) internal successors, (1160), 3 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:04,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:04:04,138 INFO L93 Difference]: Finished difference Result 187686 states and 192019 transitions. [2022-11-21 17:04:04,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:04:04,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 386.6666666666667) internal successors, (1160), 3 states have internal predecessors, (1160), 0 states have call successors, (0), 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 1894 [2022-11-21 17:04:04,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:04:04,236 INFO L225 Difference]: With dead ends: 187686 [2022-11-21 17:04:04,236 INFO L226 Difference]: Without dead ends: 103504 [2022-11-21 17:04:04,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:04:04,257 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 361 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1747 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 2004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 1747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:04:04,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 172 Invalid, 2004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 1747 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-21 17:04:04,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103504 states. [2022-11-21 17:04:05,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103504 to 100744. [2022-11-21 17:04:05,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100744 states, 100743 states have (on average 1.022413467933256) internal successors, (103001), 100743 states have internal predecessors, (103001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:05,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100744 states to 100744 states and 103001 transitions. [2022-11-21 17:04:05,416 INFO L78 Accepts]: Start accepts. Automaton has 100744 states and 103001 transitions. Word has length 1894 [2022-11-21 17:04:05,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:04:05,417 INFO L495 AbstractCegarLoop]: Abstraction has 100744 states and 103001 transitions. [2022-11-21 17:04:05,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 386.6666666666667) internal successors, (1160), 3 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:05,418 INFO L276 IsEmpty]: Start isEmpty. Operand 100744 states and 103001 transitions. [2022-11-21 17:04:05,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1930 [2022-11-21 17:04:05,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:04:05,470 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:05,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-21 17:04:05,470 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:04:05,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:05,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1140291391, now seen corresponding path program 1 times [2022-11-21 17:04:05,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:05,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773128124] [2022-11-21 17:04:05,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:05,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat