./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc --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 3266bb9a560f42e93e7f83a070eaa64f467717133c7f2cf6394974f84eb01d92 --- 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-5e519f3 [2022-11-02 20:42:27,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:42:27,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:42:27,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:42:27,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:42:27,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:42:27,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:42:27,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:42:27,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:42:27,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:42:27,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:42:27,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:42:27,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:42:27,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:42:27,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:42:27,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:42:27,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:42:27,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:42:27,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:42:27,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:42:27,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:42:27,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:42:27,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:42:27,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:42:27,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:42:27,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:42:27,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:42:27,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:42:27,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:42:27,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:42:27,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:42:27,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:42:27,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:42:27,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:42:27,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:42:27,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:42:27,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:42:27,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:42:27,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:42:27,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:42:27,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:42:27,182 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:42:27,204 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:42:27,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:42:27,205 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:42:27,205 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:42:27,206 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:42:27,206 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:42:27,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:42:27,207 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:42:27,208 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:42:27,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:42:27,208 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:42:27,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:42:27,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:42:27,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:42:27,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:42:27,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:42:27,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:42:27,210 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:42:27,211 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:42:27,211 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:42:27,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:42:27,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:42:27,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:42:27,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:42:27,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:42:27,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:42:27,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:42:27,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:42:27,214 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:42:27,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:42:27,214 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:42:27,215 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:42:27,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:42:27,215 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_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3266bb9a560f42e93e7f83a070eaa64f467717133c7f2cf6394974f84eb01d92 [2022-11-02 20:42:27,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:42:27,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:42:27,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:42:27,613 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:42:27,614 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:42:27,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/eca-rers2012/Problem12_label09.c [2022-11-02 20:42:27,691 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/data/1ab558df2/aeecd60d5c334d9499142c6f5270a426/FLAG842f5802c [2022-11-02 20:42:28,642 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:42:28,643 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/sv-benchmarks/c/eca-rers2012/Problem12_label09.c [2022-11-02 20:42:28,674 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/data/1ab558df2/aeecd60d5c334d9499142c6f5270a426/FLAG842f5802c [2022-11-02 20:42:29,140 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/data/1ab558df2/aeecd60d5c334d9499142c6f5270a426 [2022-11-02 20:42:29,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:42:29,144 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:42:29,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:42:29,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:42:29,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:42:29,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:42:29" (1/1) ... [2022-11-02 20:42:29,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@211cbde5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:29, skipping insertion in model container [2022-11-02 20:42:29,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:42:29" (1/1) ... [2022-11-02 20:42:29,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:42:29,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:42:29,762 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/sv-benchmarks/c/eca-rers2012/Problem12_label09.c[8109,8122] [2022-11-02 20:42:30,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:42:30,853 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:42:30,895 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/sv-benchmarks/c/eca-rers2012/Problem12_label09.c[8109,8122] [2022-11-02 20:42:31,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:42:31,586 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:42:31,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:31 WrapperNode [2022-11-02 20:42:31,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:42:31,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:42:31,588 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:42:31,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:42:31,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:31" (1/1) ... [2022-11-02 20:42:31,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:31" (1/1) ... [2022-11-02 20:42:32,018 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-11-02 20:42:32,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:42:32,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:42:32,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:42:32,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:42:32,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:31" (1/1) ... [2022-11-02 20:42:32,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:31" (1/1) ... [2022-11-02 20:42:32,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:31" (1/1) ... [2022-11-02 20:42:32,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:31" (1/1) ... [2022-11-02 20:42:32,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:31" (1/1) ... [2022-11-02 20:42:32,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:31" (1/1) ... [2022-11-02 20:42:32,395 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:31" (1/1) ... [2022-11-02 20:42:32,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:31" (1/1) ... [2022-11-02 20:42:32,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:42:32,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:42:32,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:42:32,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:42:32,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:31" (1/1) ... [2022-11-02 20:42:32,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:42:32,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:42:32,681 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:42:32,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:42:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:42:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:42:32,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:42:32,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:42:32,993 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:42:32,995 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:42:38,405 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:42:38,428 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:42:38,429 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:42:38,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:42:38 BoogieIcfgContainer [2022-11-02 20:42:38,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:42:38,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:42:38,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:42:38,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:42:38,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:42:29" (1/3) ... [2022-11-02 20:42:38,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5726e73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:42:38, skipping insertion in model container [2022-11-02 20:42:38,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:31" (2/3) ... [2022-11-02 20:42:38,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5726e73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:42:38, skipping insertion in model container [2022-11-02 20:42:38,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:42:38" (3/3) ... [2022-11-02 20:42:38,444 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label09.c [2022-11-02 20:42:38,464 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:42:38,464 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:42:38,552 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:42:38,559 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;@9f5911, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:42:38,559 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:42:38,567 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 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) [2022-11-02 20:42:38,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 20:42:38,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:38,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:38,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:38,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:38,584 INFO L85 PathProgramCache]: Analyzing trace with hash -215114758, now seen corresponding path program 1 times [2022-11-02 20:42:38,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:38,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220033893] [2022-11-02 20:42:38,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:38,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:39,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:39,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:39,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220033893] [2022-11-02 20:42:39,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220033893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:39,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:39,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:42:39,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787905082] [2022-11-02 20:42:39,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:39,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:42:39,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:39,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:42:39,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:42:39,379 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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) [2022-11-02 20:42:48,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:48,475 INFO L93 Difference]: Finished difference Result 3143 states and 6131 transitions. [2022-11-02 20:42:48,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:42:48,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2022-11-02 20:42:48,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:48,520 INFO L225 Difference]: With dead ends: 3143 [2022-11-02 20:42:48,521 INFO L226 Difference]: Without dead ends: 2257 [2022-11-02 20:42:48,532 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 [2022-11-02 20:42:48,535 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 2192 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 5311 mSolverCounterSat, 1369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2192 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 6680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1369 IncrementalHoareTripleChecker+Valid, 5311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:48,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2192 Valid, 782 Invalid, 6680 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1369 Valid, 5311 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-11-02 20:42:48,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2022-11-02 20:42:48,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257. [2022-11-02 20:42:48,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.513741134751773) internal successors, (3415), 2256 states have internal predecessors, (3415), 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) [2022-11-02 20:42:48,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3415 transitions. [2022-11-02 20:42:48,675 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3415 transitions. Word has length 66 [2022-11-02 20:42:48,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:48,676 INFO L495 AbstractCegarLoop]: Abstraction has 2257 states and 3415 transitions. [2022-11-02 20:42:48,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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) [2022-11-02 20:42:48,677 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3415 transitions. [2022-11-02 20:42:48,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-02 20:42:48,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:48,686 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:42:48,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:42:48,687 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:48,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:48,688 INFO L85 PathProgramCache]: Analyzing trace with hash 216905129, now seen corresponding path program 1 times [2022-11-02 20:42:48,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:48,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305422650] [2022-11-02 20:42:48,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:48,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:49,164 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:49,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:49,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305422650] [2022-11-02 20:42:49,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305422650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:49,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:49,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:42:49,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955245175] [2022-11-02 20:42:49,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:49,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:42:49,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:49,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:42:49,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:42:49,171 INFO L87 Difference]: Start difference. First operand 2257 states and 3415 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 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) [2022-11-02 20:42:55,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:55,516 INFO L93 Difference]: Finished difference Result 6051 states and 9520 transitions. [2022-11-02 20:42:55,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:42:55,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 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 137 [2022-11-02 20:42:55,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:55,530 INFO L225 Difference]: With dead ends: 6051 [2022-11-02 20:42:55,531 INFO L226 Difference]: Without dead ends: 3759 [2022-11-02 20:42:55,534 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 [2022-11-02 20:42:55,535 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 690 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3804 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 4468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 3804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:55,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 711 Invalid, 4468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 3804 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-02 20:42:55,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2022-11-02 20:42:55,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3759. [2022-11-02 20:42:55,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 3758 states have (on average 1.3304949441192124) internal successors, (5000), 3758 states have internal predecessors, (5000), 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) [2022-11-02 20:42:55,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 5000 transitions. [2022-11-02 20:42:55,616 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 5000 transitions. Word has length 137 [2022-11-02 20:42:55,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:55,617 INFO L495 AbstractCegarLoop]: Abstraction has 3759 states and 5000 transitions. [2022-11-02 20:42:55,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 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) [2022-11-02 20:42:55,617 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 5000 transitions. [2022-11-02 20:42:55,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-11-02 20:42:55,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:55,621 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:55,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:42:55,622 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:55,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:55,622 INFO L85 PathProgramCache]: Analyzing trace with hash 619958633, now seen corresponding path program 1 times [2022-11-02 20:42:55,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:55,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977948626] [2022-11-02 20:42:55,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:55,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:56,360 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-02 20:42:56,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:56,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977948626] [2022-11-02 20:42:56,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977948626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:56,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:56,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:42:56,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771898311] [2022-11-02 20:42:56,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:56,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:42:56,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:56,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:42:56,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:42:56,367 INFO L87 Difference]: Start difference. First operand 3759 states and 5000 transitions. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 3 states have internal predecessors, (209), 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) [2022-11-02 20:43:01,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:01,325 INFO L93 Difference]: Finished difference Result 9057 states and 12624 transitions. [2022-11-02 20:43:01,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:43:01,326 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 3 states have internal predecessors, (209), 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 278 [2022-11-02 20:43:01,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:01,345 INFO L225 Difference]: With dead ends: 9057 [2022-11-02 20:43:01,346 INFO L226 Difference]: Without dead ends: 5263 [2022-11-02 20:43:01,350 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 [2022-11-02 20:43:01,351 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 776 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3717 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 4259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 3717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:01,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 324 Invalid, 4259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 3717 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-02 20:43:01,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5263 states. [2022-11-02 20:43:01,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5263 to 5261. [2022-11-02 20:43:01,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 1.3241444866920151) internal successors, (6965), 5260 states have internal predecessors, (6965), 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) [2022-11-02 20:43:01,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 6965 transitions. [2022-11-02 20:43:01,464 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 6965 transitions. Word has length 278 [2022-11-02 20:43:01,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:01,466 INFO L495 AbstractCegarLoop]: Abstraction has 5261 states and 6965 transitions. [2022-11-02 20:43:01,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 3 states have internal predecessors, (209), 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) [2022-11-02 20:43:01,467 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 6965 transitions. [2022-11-02 20:43:01,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-11-02 20:43:01,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:01,476 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:01,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:43:01,477 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:01,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:01,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1562743686, now seen corresponding path program 1 times [2022-11-02 20:43:01,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:01,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540712143] [2022-11-02 20:43:01,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:01,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:01,817 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:01,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:01,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540712143] [2022-11-02 20:43:01,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540712143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:01,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:01,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:43:01,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973109299] [2022-11-02 20:43:01,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:01,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:43:01,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:01,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:43:01,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:43:01,821 INFO L87 Difference]: Start difference. First operand 5261 states and 6965 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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) [2022-11-02 20:43:06,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:06,024 INFO L93 Difference]: Finished difference Result 15026 states and 20134 transitions. [2022-11-02 20:43:06,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:43:06,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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 292 [2022-11-02 20:43:06,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:06,056 INFO L225 Difference]: With dead ends: 15026 [2022-11-02 20:43:06,056 INFO L226 Difference]: Without dead ends: 9767 [2022-11-02 20:43:06,062 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 [2022-11-02 20:43:06,063 INFO L413 NwaCegarLoop]: 1253 mSDtfsCounter, 675 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2630 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 3018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 2630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:06,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 1261 Invalid, 3018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 2630 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-02 20:43:06,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2022-11-02 20:43:06,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767. [2022-11-02 20:43:06,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.2974605775138235) internal successors, (12671), 9766 states have internal predecessors, (12671), 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) [2022-11-02 20:43:06,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 12671 transitions. [2022-11-02 20:43:06,263 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 12671 transitions. Word has length 292 [2022-11-02 20:43:06,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:06,264 INFO L495 AbstractCegarLoop]: Abstraction has 9767 states and 12671 transitions. [2022-11-02 20:43:06,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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) [2022-11-02 20:43:06,266 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 12671 transitions. [2022-11-02 20:43:06,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-11-02 20:43:06,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:06,272 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:06,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:43:06,273 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:06,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:06,274 INFO L85 PathProgramCache]: Analyzing trace with hash 735833552, now seen corresponding path program 1 times [2022-11-02 20:43:06,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:06,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525516358] [2022-11-02 20:43:06,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:06,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:06,556 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-02 20:43:06,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:06,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525516358] [2022-11-02 20:43:06,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525516358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:06,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:06,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:43:06,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540788100] [2022-11-02 20:43:06,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:06,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:43:06,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:06,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:43:06,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:43:06,561 INFO L87 Difference]: Start difference. First operand 9767 states and 12671 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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) [2022-11-02 20:43:10,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:10,947 INFO L93 Difference]: Finished difference Result 25540 states and 33979 transitions. [2022-11-02 20:43:10,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:43:10,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 296 [2022-11-02 20:43:10,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:11,000 INFO L225 Difference]: With dead ends: 25540 [2022-11-02 20:43:11,000 INFO L226 Difference]: Without dead ends: 15775 [2022-11-02 20:43:11,012 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 [2022-11-02 20:43:11,013 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 703 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2275 mSolverCounterSat, 637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 2912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 2275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:11,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 529 Invalid, 2912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [637 Valid, 2275 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-02 20:43:11,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15775 states. [2022-11-02 20:43:11,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15775 to 15775. [2022-11-02 20:43:11,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15775 states, 15774 states have (on average 1.2829339419297578) internal successors, (20237), 15774 states have internal predecessors, (20237), 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) [2022-11-02 20:43:11,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15775 states to 15775 states and 20237 transitions. [2022-11-02 20:43:11,365 INFO L78 Accepts]: Start accepts. Automaton has 15775 states and 20237 transitions. Word has length 296 [2022-11-02 20:43:11,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:11,366 INFO L495 AbstractCegarLoop]: Abstraction has 15775 states and 20237 transitions. [2022-11-02 20:43:11,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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) [2022-11-02 20:43:11,366 INFO L276 IsEmpty]: Start isEmpty. Operand 15775 states and 20237 transitions. [2022-11-02 20:43:11,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-11-02 20:43:11,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:11,373 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:11,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:43:11,373 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:11,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:11,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1714844996, now seen corresponding path program 1 times [2022-11-02 20:43:11,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:11,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074234600] [2022-11-02 20:43:11,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:11,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:11,683 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-02 20:43:11,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:11,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074234600] [2022-11-02 20:43:11,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074234600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:11,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:11,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:43:11,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738761799] [2022-11-02 20:43:11,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:11,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:43:11,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:11,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:43:11,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:43:11,686 INFO L87 Difference]: Start difference. First operand 15775 states and 20237 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 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) [2022-11-02 20:43:15,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:15,644 INFO L93 Difference]: Finished difference Result 44315 states and 57482 transitions. [2022-11-02 20:43:15,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:43:15,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 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 304 [2022-11-02 20:43:15,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:15,708 INFO L225 Difference]: With dead ends: 44315 [2022-11-02 20:43:15,708 INFO L226 Difference]: Without dead ends: 28542 [2022-11-02 20:43:15,724 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 [2022-11-02 20:43:15,725 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 689 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1967 mSolverCounterSat, 841 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 2808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 841 IncrementalHoareTripleChecker+Valid, 1967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:15,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 423 Invalid, 2808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [841 Valid, 1967 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-02 20:43:15,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28542 states. [2022-11-02 20:43:16,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28542 to 25538. [2022-11-02 20:43:16,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25538 states, 25537 states have (on average 1.2187022751302032) internal successors, (31122), 25537 states have internal predecessors, (31122), 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) [2022-11-02 20:43:16,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25538 states to 25538 states and 31122 transitions. [2022-11-02 20:43:16,136 INFO L78 Accepts]: Start accepts. Automaton has 25538 states and 31122 transitions. Word has length 304 [2022-11-02 20:43:16,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:16,137 INFO L495 AbstractCegarLoop]: Abstraction has 25538 states and 31122 transitions. [2022-11-02 20:43:16,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 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) [2022-11-02 20:43:16,138 INFO L276 IsEmpty]: Start isEmpty. Operand 25538 states and 31122 transitions. [2022-11-02 20:43:16,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2022-11-02 20:43:16,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:16,145 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:16,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:43:16,146 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:16,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:16,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1805460738, now seen corresponding path program 1 times [2022-11-02 20:43:16,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:16,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646161357] [2022-11-02 20:43:16,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:16,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:16,910 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-02 20:43:16,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:16,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646161357] [2022-11-02 20:43:16,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646161357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:16,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:16,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:43:16,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426777124] [2022-11-02 20:43:16,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:16,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:43:16,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:16,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:43:16,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:43:16,913 INFO L87 Difference]: Start difference. First operand 25538 states and 31122 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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) [2022-11-02 20:43:20,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:20,356 INFO L93 Difference]: Finished difference Result 61588 states and 73943 transitions. [2022-11-02 20:43:20,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:43:20,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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 343 [2022-11-02 20:43:20,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:20,426 INFO L225 Difference]: With dead ends: 61588 [2022-11-02 20:43:20,426 INFO L226 Difference]: Without dead ends: 36052 [2022-11-02 20:43:20,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:43:20,452 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 768 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2318 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 2739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 2318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:20,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 209 Invalid, 2739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 2318 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-02 20:43:20,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36052 states. [2022-11-02 20:43:20,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36052 to 31546. [2022-11-02 20:43:20,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31546 states, 31545 states have (on average 1.1842447297511491) internal successors, (37357), 31545 states have internal predecessors, (37357), 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) [2022-11-02 20:43:20,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31546 states to 31546 states and 37357 transitions. [2022-11-02 20:43:20,972 INFO L78 Accepts]: Start accepts. Automaton has 31546 states and 37357 transitions. Word has length 343 [2022-11-02 20:43:20,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:20,974 INFO L495 AbstractCegarLoop]: Abstraction has 31546 states and 37357 transitions. [2022-11-02 20:43:20,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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) [2022-11-02 20:43:20,974 INFO L276 IsEmpty]: Start isEmpty. Operand 31546 states and 37357 transitions. [2022-11-02 20:43:20,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2022-11-02 20:43:20,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:20,995 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:43:20,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:43:20,995 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:20,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:20,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1248766331, now seen corresponding path program 1 times [2022-11-02 20:43:20,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:20,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252151861] [2022-11-02 20:43:20,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:20,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:21,318 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 378 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-02 20:43:21,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:21,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252151861] [2022-11-02 20:43:21,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252151861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:21,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:21,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:43:21,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909184207] [2022-11-02 20:43:21,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:21,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:43:21,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:21,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:43:21,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:43:21,321 INFO L87 Difference]: Start difference. First operand 31546 states and 37357 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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) [2022-11-02 20:43:25,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:25,125 INFO L93 Difference]: Finished difference Result 78861 states and 93956 transitions. [2022-11-02 20:43:25,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:43:25,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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 399 [2022-11-02 20:43:25,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:25,194 INFO L225 Difference]: With dead ends: 78861 [2022-11-02 20:43:25,195 INFO L226 Difference]: Without dead ends: 47317 [2022-11-02 20:43:25,216 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 [2022-11-02 20:43:25,217 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 669 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2442 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 2904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 2442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:25,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 296 Invalid, 2904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 2442 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-02 20:43:25,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47317 states. [2022-11-02 20:43:25,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47317 to 46566. [2022-11-02 20:43:25,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46566 states, 46565 states have (on average 1.1781595619027165) internal successors, (54861), 46565 states have internal predecessors, (54861), 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) [2022-11-02 20:43:25,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46566 states to 46566 states and 54861 transitions. [2022-11-02 20:43:25,847 INFO L78 Accepts]: Start accepts. Automaton has 46566 states and 54861 transitions. Word has length 399 [2022-11-02 20:43:25,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:25,848 INFO L495 AbstractCegarLoop]: Abstraction has 46566 states and 54861 transitions. [2022-11-02 20:43:25,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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) [2022-11-02 20:43:25,849 INFO L276 IsEmpty]: Start isEmpty. Operand 46566 states and 54861 transitions. [2022-11-02 20:43:25,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2022-11-02 20:43:25,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:25,856 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-02 20:43:25,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:43:25,856 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:25,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:25,857 INFO L85 PathProgramCache]: Analyzing trace with hash 508886644, now seen corresponding path program 1 times [2022-11-02 20:43:25,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:25,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955525871] [2022-11-02 20:43:25,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:25,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:26,155 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-02 20:43:26,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:26,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955525871] [2022-11-02 20:43:26,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955525871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:26,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:26,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:43:26,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677555040] [2022-11-02 20:43:26,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:26,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:43:26,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:26,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:43:26,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:43:26,159 INFO L87 Difference]: Start difference. First operand 46566 states and 54861 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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) [2022-11-02 20:43:29,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:29,988 INFO L93 Difference]: Finished difference Result 112656 states and 134696 transitions. [2022-11-02 20:43:29,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:43:29,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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 405 [2022-11-02 20:43:29,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:30,079 INFO L225 Difference]: With dead ends: 112656 [2022-11-02 20:43:30,079 INFO L226 Difference]: Without dead ends: 66092 [2022-11-02 20:43:30,111 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 [2022-11-02 20:43:30,112 INFO L413 NwaCegarLoop]: 1239 mSDtfsCounter, 661 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2278 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 2711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 2278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:30,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 1247 Invalid, 2711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 2278 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-02 20:43:30,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66092 states. [2022-11-02 20:43:30,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66092 to 66092. [2022-11-02 20:43:30,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66092 states, 66091 states have (on average 1.1514729690880756) internal successors, (76102), 66091 states have internal predecessors, (76102), 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) [2022-11-02 20:43:30,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66092 states to 66092 states and 76102 transitions. [2022-11-02 20:43:30,993 INFO L78 Accepts]: Start accepts. Automaton has 66092 states and 76102 transitions. Word has length 405 [2022-11-02 20:43:30,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:30,994 INFO L495 AbstractCegarLoop]: Abstraction has 66092 states and 76102 transitions. [2022-11-02 20:43:30,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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) [2022-11-02 20:43:30,995 INFO L276 IsEmpty]: Start isEmpty. Operand 66092 states and 76102 transitions. [2022-11-02 20:43:31,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-11-02 20:43:31,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:31,003 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-02 20:43:31,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:43:31,003 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:31,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:31,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1238970092, now seen corresponding path program 1 times [2022-11-02 20:43:31,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:31,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378313893] [2022-11-02 20:43:31,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:31,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:31,319 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 376 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-02 20:43:31,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:31,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378313893] [2022-11-02 20:43:31,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378313893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:31,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:31,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:43:31,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139960705] [2022-11-02 20:43:31,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:31,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:43:31,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:31,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:43:31,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:43:31,322 INFO L87 Difference]: Start difference. First operand 66092 states and 76102 transitions. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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) [2022-11-02 20:43:35,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:35,689 INFO L93 Difference]: Finished difference Result 150957 states and 176239 transitions. [2022-11-02 20:43:35,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:43:35,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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 421 [2022-11-02 20:43:35,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:35,790 INFO L225 Difference]: With dead ends: 150957 [2022-11-02 20:43:35,790 INFO L226 Difference]: Without dead ends: 84867 [2022-11-02 20:43:35,819 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 [2022-11-02 20:43:35,820 INFO L413 NwaCegarLoop]: 1274 mSDtfsCounter, 673 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2233 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 2679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:35,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 1282 Invalid, 2679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2233 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-02 20:43:35,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84867 states. [2022-11-02 20:43:36,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84867 to 84867. [2022-11-02 20:43:36,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84867 states, 84866 states have (on average 1.134824311267174) internal successors, (96308), 84866 states have internal predecessors, (96308), 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) [2022-11-02 20:43:37,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84867 states to 84867 states and 96308 transitions. [2022-11-02 20:43:37,124 INFO L78 Accepts]: Start accepts. Automaton has 84867 states and 96308 transitions. Word has length 421 [2022-11-02 20:43:37,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:37,125 INFO L495 AbstractCegarLoop]: Abstraction has 84867 states and 96308 transitions. [2022-11-02 20:43:37,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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) [2022-11-02 20:43:37,125 INFO L276 IsEmpty]: Start isEmpty. Operand 84867 states and 96308 transitions. [2022-11-02 20:43:37,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2022-11-02 20:43:37,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:37,136 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-02 20:43:37,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:43:37,137 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:37,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:37,138 INFO L85 PathProgramCache]: Analyzing trace with hash -2134049438, now seen corresponding path program 1 times [2022-11-02 20:43:37,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:37,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965448920] [2022-11-02 20:43:37,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:37,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:38,303 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 285 proven. 99 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-02 20:43:38,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:38,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965448920] [2022-11-02 20:43:38,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965448920] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:43:38,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284276654] [2022-11-02 20:43:38,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:38,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:38,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:38,306 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:38,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:43:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:38,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:43:38,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:38,669 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2022-11-02 20:43:38,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:43:38,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284276654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:38,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:43:38,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-02 20:43:38,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447082460] [2022-11-02 20:43:38,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:38,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:43:38,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:38,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:43:38,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:43:38,672 INFO L87 Difference]: Start difference. First operand 84867 states and 96308 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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) [2022-11-02 20:43:43,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:43,215 INFO L93 Difference]: Finished difference Result 169732 states and 192614 transitions. [2022-11-02 20:43:43,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:43:43,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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 425 [2022-11-02 20:43:43,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:43,305 INFO L225 Difference]: With dead ends: 169732 [2022-11-02 20:43:43,305 INFO L226 Difference]: Without dead ends: 84867 [2022-11-02 20:43:43,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:43:43,360 INFO L413 NwaCegarLoop]: 1183 mSDtfsCounter, 718 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2403 mSolverCounterSat, 508 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 2911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 2403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:43,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 1191 Invalid, 2911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [508 Valid, 2403 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-02 20:43:43,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84867 states. [2022-11-02 20:43:44,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84867 to 81863. [2022-11-02 20:43:44,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81863 states, 81862 states have (on average 1.1201289975812954) internal successors, (91696), 81862 states have internal predecessors, (91696), 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) [2022-11-02 20:43:44,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81863 states to 81863 states and 91696 transitions. [2022-11-02 20:43:44,467 INFO L78 Accepts]: Start accepts. Automaton has 81863 states and 91696 transitions. Word has length 425 [2022-11-02 20:43:44,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:44,467 INFO L495 AbstractCegarLoop]: Abstraction has 81863 states and 91696 transitions. [2022-11-02 20:43:44,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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) [2022-11-02 20:43:44,468 INFO L276 IsEmpty]: Start isEmpty. Operand 81863 states and 91696 transitions. [2022-11-02 20:43:44,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2022-11-02 20:43:44,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:44,489 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:44,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 20:43:44,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-02 20:43:44,690 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:44,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:44,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1388120569, now seen corresponding path program 1 times [2022-11-02 20:43:44,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:44,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703579034] [2022-11-02 20:43:44,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:44,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:45,445 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 583 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-02 20:43:45,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:45,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703579034] [2022-11-02 20:43:45,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703579034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:45,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:45,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:43:45,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955046512] [2022-11-02 20:43:45,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:45,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:43:45,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:45,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:43:45,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:43:45,448 INFO L87 Difference]: Start difference. First operand 81863 states and 91696 transitions. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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) [2022-11-02 20:43:49,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:49,551 INFO L93 Difference]: Finished difference Result 204278 states and 228096 transitions. [2022-11-02 20:43:49,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:43:49,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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 540 [2022-11-02 20:43:49,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:49,672 INFO L225 Difference]: With dead ends: 204278 [2022-11-02 20:43:49,673 INFO L226 Difference]: Without dead ends: 117160 [2022-11-02 20:43:49,700 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 [2022-11-02 20:43:49,701 INFO L413 NwaCegarLoop]: 1302 mSDtfsCounter, 648 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2225 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 2642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 2225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:49,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 1310 Invalid, 2642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 2225 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-02 20:43:49,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117160 states. [2022-11-02 20:43:51,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117160 to 115658. [2022-11-02 20:43:51,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115658 states, 115657 states have (on average 1.0992676621389108) internal successors, (127138), 115657 states have internal predecessors, (127138), 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) [2022-11-02 20:43:51,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115658 states to 115658 states and 127138 transitions. [2022-11-02 20:43:51,254 INFO L78 Accepts]: Start accepts. Automaton has 115658 states and 127138 transitions. Word has length 540 [2022-11-02 20:43:51,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:51,255 INFO L495 AbstractCegarLoop]: Abstraction has 115658 states and 127138 transitions. [2022-11-02 20:43:51,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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) [2022-11-02 20:43:51,255 INFO L276 IsEmpty]: Start isEmpty. Operand 115658 states and 127138 transitions. [2022-11-02 20:43:51,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2022-11-02 20:43:51,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:51,266 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:51,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:43:51,267 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:51,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:51,267 INFO L85 PathProgramCache]: Analyzing trace with hash 50672567, now seen corresponding path program 1 times [2022-11-02 20:43:51,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:51,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665587251] [2022-11-02 20:43:51,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:51,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:52,932 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 577 proven. 229 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-02 20:43:52,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:52,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665587251] [2022-11-02 20:43:52,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665587251] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:43:52,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992626526] [2022-11-02 20:43:52,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:52,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:52,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:52,935 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:52,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:43:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:53,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:43:53,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:53,355 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 557 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2022-11-02 20:43:53,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:43:53,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992626526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:53,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:43:53,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-11-02 20:43:53,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775238457] [2022-11-02 20:43:53,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:53,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:43:53,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:53,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:43:53,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:43:53,358 INFO L87 Difference]: Start difference. First operand 115658 states and 127138 transitions. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 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) [2022-11-02 20:43:57,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:57,572 INFO L93 Difference]: Finished difference Result 230563 states and 253518 transitions. [2022-11-02 20:43:57,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:43:57,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 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 568 [2022-11-02 20:43:57,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:57,751 INFO L225 Difference]: With dead ends: 230563 [2022-11-02 20:43:57,752 INFO L226 Difference]: Without dead ends: 115658 [2022-11-02 20:43:57,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:43:57,810 INFO L413 NwaCegarLoop]: 1294 mSDtfsCounter, 680 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2082 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 2626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 2082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:57,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1302 Invalid, 2626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 2082 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-02 20:43:57,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115658 states. [2022-11-02 20:43:59,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115658 to 111152. [2022-11-02 20:43:59,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111152 states, 111151 states have (on average 1.0641559680074852) internal successors, (118282), 111151 states have internal predecessors, (118282), 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) [2022-11-02 20:43:59,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111152 states to 111152 states and 118282 transitions. [2022-11-02 20:43:59,379 INFO L78 Accepts]: Start accepts. Automaton has 111152 states and 118282 transitions. Word has length 568 [2022-11-02 20:43:59,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:59,379 INFO L495 AbstractCegarLoop]: Abstraction has 111152 states and 118282 transitions. [2022-11-02 20:43:59,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 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) [2022-11-02 20:43:59,380 INFO L276 IsEmpty]: Start isEmpty. Operand 111152 states and 118282 transitions. [2022-11-02 20:43:59,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2022-11-02 20:43:59,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:59,395 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:59,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-02 20:43:59,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-02 20:43:59,596 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:59,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:59,596 INFO L85 PathProgramCache]: Analyzing trace with hash -877566435, now seen corresponding path program 1 times [2022-11-02 20:43:59,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:59,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530161076] [2022-11-02 20:43:59,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:59,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:00,058 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 733 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-02 20:44:00,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:00,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530161076] [2022-11-02 20:44:00,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530161076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:00,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:00,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:44:00,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167225372] [2022-11-02 20:44:00,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:00,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:00,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:00,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:00,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:00,064 INFO L87 Difference]: Start difference. First operand 111152 states and 118282 transitions. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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) [2022-11-02 20:44:04,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:04,455 INFO L93 Difference]: Finished difference Result 226057 states and 240399 transitions. [2022-11-02 20:44:04,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:04,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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 596 [2022-11-02 20:44:04,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:04,570 INFO L225 Difference]: With dead ends: 226057 [2022-11-02 20:44:04,570 INFO L226 Difference]: Without dead ends: 115658 [2022-11-02 20:44:04,604 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 [2022-11-02 20:44:04,604 INFO L413 NwaCegarLoop]: 1175 mSDtfsCounter, 680 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2074 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 2665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:04,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1182 Invalid, 2665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2074 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-02 20:44:04,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115658 states. [2022-11-02 20:44:05,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115658 to 108148. [2022-11-02 20:44:05,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108148 states, 108147 states have (on average 1.0461224074639148) internal successors, (113135), 108147 states have internal predecessors, (113135), 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) [2022-11-02 20:44:06,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108148 states to 108148 states and 113135 transitions. [2022-11-02 20:44:06,112 INFO L78 Accepts]: Start accepts. Automaton has 108148 states and 113135 transitions. Word has length 596 [2022-11-02 20:44:06,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:06,112 INFO L495 AbstractCegarLoop]: Abstraction has 108148 states and 113135 transitions. [2022-11-02 20:44:06,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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) [2022-11-02 20:44:06,113 INFO L276 IsEmpty]: Start isEmpty. Operand 108148 states and 113135 transitions. [2022-11-02 20:44:06,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2022-11-02 20:44:06,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:06,548 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:06,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:44:06,549 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:06,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:06,549 INFO L85 PathProgramCache]: Analyzing trace with hash 28685963, now seen corresponding path program 1 times [2022-11-02 20:44:06,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:06,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980892034] [2022-11-02 20:44:06,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:06,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:07,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1034 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 779 trivial. 0 not checked. [2022-11-02 20:44:07,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:07,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980892034] [2022-11-02 20:44:07,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980892034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:07,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:07,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:44:07,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632066432] [2022-11-02 20:44:07,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:07,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:07,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:07,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:07,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:07,012 INFO L87 Difference]: Start difference. First operand 108148 states and 113135 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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) [2022-11-02 20:44:10,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:10,907 INFO L93 Difference]: Finished difference Result 235069 states and 246305 transitions. [2022-11-02 20:44:10,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:10,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 644 [2022-11-02 20:44:10,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:11,021 INFO L225 Difference]: With dead ends: 235069 [2022-11-02 20:44:11,021 INFO L226 Difference]: Without dead ends: 127674 [2022-11-02 20:44:11,060 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 [2022-11-02 20:44:11,061 INFO L413 NwaCegarLoop]: 1109 mSDtfsCounter, 808 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2160 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 2160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:11,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 1117 Invalid, 2547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 2160 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-02 20:44:11,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127674 states. [2022-11-02 20:44:12,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127674 to 126923. [2022-11-02 20:44:12,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126923 states, 126922 states have (on average 1.0424827847024156) internal successors, (132314), 126922 states have internal predecessors, (132314), 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) [2022-11-02 20:44:12,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126923 states to 126923 states and 132314 transitions. [2022-11-02 20:44:12,834 INFO L78 Accepts]: Start accepts. Automaton has 126923 states and 132314 transitions. Word has length 644 [2022-11-02 20:44:12,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:12,835 INFO L495 AbstractCegarLoop]: Abstraction has 126923 states and 132314 transitions. [2022-11-02 20:44:12,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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) [2022-11-02 20:44:12,835 INFO L276 IsEmpty]: Start isEmpty. Operand 126923 states and 132314 transitions. [2022-11-02 20:44:12,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 971 [2022-11-02 20:44:12,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:12,901 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:12,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:44:12,901 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:12,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:12,902 INFO L85 PathProgramCache]: Analyzing trace with hash 588519551, now seen corresponding path program 1 times [2022-11-02 20:44:12,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:12,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085434740] [2022-11-02 20:44:12,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:12,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:16,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 811 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:16,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:16,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085434740] [2022-11-02 20:44:16,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085434740] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:44:16,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933757922] [2022-11-02 20:44:16,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:16,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:16,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:16,935 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:44:16,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:44:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:17,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 1145 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 20:44:17,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:20,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 625 proven. 64 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-11-02 20:44:20,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:44:26,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 625 proven. 64 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-11-02 20:44:26,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933757922] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:44:26,767 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:44:26,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 14 [2022-11-02 20:44:26,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574412935] [2022-11-02 20:44:26,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:44:26,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:44:26,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:26,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:44:26,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:44:26,772 INFO L87 Difference]: Start difference. First operand 126923 states and 132314 transitions. Second operand has 14 states, 14 states have (on average 158.14285714285714) internal successors, (2214), 14 states have internal predecessors, (2214), 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) [2022-11-02 20:45:09,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:09,041 INFO L93 Difference]: Finished difference Result 348000 states and 363141 transitions. [2022-11-02 20:45:09,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-02 20:45:09,042 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 158.14285714285714) internal successors, (2214), 14 states have internal predecessors, (2214), 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 970 [2022-11-02 20:45:09,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:09,556 INFO L225 Difference]: With dead ends: 348000 [2022-11-02 20:45:09,556 INFO L226 Difference]: Without dead ends: 218801 [2022-11-02 20:45:09,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1992 GetRequests, 1957 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=332, Invalid=1000, Unknown=0, NotChecked=0, Total=1332 [2022-11-02 20:45:09,608 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 17826 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 51238 mSolverCounterSat, 4894 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17826 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 56132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4894 IncrementalHoareTripleChecker+Valid, 51238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:09,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17826 Valid, 423 Invalid, 56132 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4894 Valid, 51238 Invalid, 0 Unknown, 0 Unchecked, 39.5s Time] [2022-11-02 20:45:09,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218801 states. [2022-11-02 20:45:11,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218801 to 164473. [2022-11-02 20:45:11,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164473 states, 164472 states have (on average 1.0392468018872514) internal successors, (170927), 164472 states have internal predecessors, (170927), 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) [2022-11-02 20:45:11,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164473 states to 164473 states and 170927 transitions. [2022-11-02 20:45:11,940 INFO L78 Accepts]: Start accepts. Automaton has 164473 states and 170927 transitions. Word has length 970 [2022-11-02 20:45:11,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:11,940 INFO L495 AbstractCegarLoop]: Abstraction has 164473 states and 170927 transitions. [2022-11-02 20:45:11,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 158.14285714285714) internal successors, (2214), 14 states have internal predecessors, (2214), 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) [2022-11-02 20:45:11,941 INFO L276 IsEmpty]: Start isEmpty. Operand 164473 states and 170927 transitions. [2022-11-02 20:45:12,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1054 [2022-11-02 20:45:12,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:12,016 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:12,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-02 20:45:12,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553189d1-72b7-4d76-b3a9-f5a42b33371f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 20:45:12,234 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:12,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:12,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1185063785, now seen corresponding path program 1 times [2022-11-02 20:45:12,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:12,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967849674] [2022-11-02 20:45:12,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:12,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:14,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 712 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2022-11-02 20:45:14,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:14,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967849674] [2022-11-02 20:45:14,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967849674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:14,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:14,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:45:14,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161164626] [2022-11-02 20:45:14,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:14,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:45:14,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:14,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:45:14,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:45:14,763 INFO L87 Difference]: Start difference. First operand 164473 states and 170927 transitions. Second operand has 4 states, 4 states have (on average 192.75) internal successors, (771), 4 states have internal predecessors, (771), 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) [2022-11-02 20:45:21,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:21,416 INFO L93 Difference]: Finished difference Result 383014 states and 397707 transitions. [2022-11-02 20:45:21,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:45:21,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 192.75) internal successors, (771), 4 states have internal predecessors, (771), 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 1053 [2022-11-02 20:45:21,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:21,418 INFO L225 Difference]: With dead ends: 383014 [2022-11-02 20:45:21,418 INFO L226 Difference]: Without dead ends: 0 [2022-11-02 20:45:21,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:45:21,486 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 1056 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 4451 mSolverCounterSat, 872 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 5323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 872 IncrementalHoareTripleChecker+Valid, 4451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:21,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1056 Valid, 27 Invalid, 5323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [872 Valid, 4451 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-02 20:45:21,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-02 20:45:21,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-02 20:45:21,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-02 20:45:21,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-02 20:45:21,488 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1053 [2022-11-02 20:45:21,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:21,488 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:45:21,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.75) internal successors, (771), 4 states have internal predecessors, (771), 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) [2022-11-02 20:45:21,489 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-02 20:45:21,489 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-02 20:45:21,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:45:21,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 20:45:21,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-02 20:45:26,873 WARN L234 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 659 DAG size of output: 647 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)