./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.resistance.1.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.resistance.1.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8 --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 64bit --witnessprinter.graph.data.programhash 7c9b0a530613e7ca0d5dfef365ae6c8cf64c5f71fb575b672122f1a7cf4ecbe6 --- 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-e04fb08 [2022-11-16 12:10:08,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:10:08,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:10:08,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:10:08,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:10:08,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:10:08,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:10:08,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:10:08,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:10:08,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:10:08,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:10:08,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:10:08,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:10:08,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:10:08,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:10:08,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:10:08,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:10:08,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:10:08,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:10:08,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:10:08,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:10:08,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:10:08,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:10:08,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:10:08,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:10:08,228 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:10:08,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:10:08,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:10:08,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:10:08,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:10:08,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:10:08,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:10:08,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:10:08,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:10:08,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:10:08,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:10:08,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:10:08,238 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:10:08,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:10:08,239 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:10:08,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:10:08,241 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 12:10:08,280 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:10:08,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:10:08,281 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:10:08,282 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:10:08,283 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:10:08,283 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:10:08,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:10:08,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:10:08,284 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:10:08,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:10:08,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:10:08,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:10:08,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:10:08,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:10:08,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:10:08,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:10:08,286 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:10:08,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:10:08,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:10:08,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:10:08,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:10:08,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:10:08,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:10:08,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:10:08,288 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:10:08,288 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:10:08,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:10:08,289 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:10:08,289 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:10:08,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:10:08,289 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_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c9b0a530613e7ca0d5dfef365ae6c8cf64c5f71fb575b672122f1a7cf4ecbe6 [2022-11-16 12:10:08,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:10:08,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:10:08,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:10:08,666 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:10:08,667 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:10:08,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.resistance.1.prop1-back-serstep.c [2022-11-16 12:10:08,753 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/data/7c660c9e9/43befa5ed0f047d19210676fe83f01d9/FLAG5126649ac [2022-11-16 12:10:09,375 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:10:09,376 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.resistance.1.prop1-back-serstep.c [2022-11-16 12:10:09,396 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/data/7c660c9e9/43befa5ed0f047d19210676fe83f01d9/FLAG5126649ac [2022-11-16 12:10:09,645 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/data/7c660c9e9/43befa5ed0f047d19210676fe83f01d9 [2022-11-16 12:10:09,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:10:09,649 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:10:09,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:10:09,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:10:09,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:10:09,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:10:09" (1/1) ... [2022-11-16 12:10:09,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d5a6aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:09, skipping insertion in model container [2022-11-16 12:10:09,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:10:09" (1/1) ... [2022-11-16 12:10:09,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:10:09,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:10:09,955 WARN L229 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_de77f534-65a4-42da-affa-6462ab68bf64/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.resistance.1.prop1-back-serstep.c[1014,1027] [2022-11-16 12:10:10,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:10:10,310 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:10:10,321 WARN L229 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_de77f534-65a4-42da-affa-6462ab68bf64/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.resistance.1.prop1-back-serstep.c[1014,1027] [2022-11-16 12:10:10,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:10:10,553 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:10:10,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:10 WrapperNode [2022-11-16 12:10:10,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:10:10,555 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:10:10,555 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:10:10,556 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:10:10,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:10" (1/1) ... [2022-11-16 12:10:10,610 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:10" (1/1) ... [2022-11-16 12:10:10,765 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2827 [2022-11-16 12:10:10,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:10:10,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:10:10,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:10:10,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:10:10,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:10" (1/1) ... [2022-11-16 12:10:10,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:10" (1/1) ... [2022-11-16 12:10:10,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:10" (1/1) ... [2022-11-16 12:10:10,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:10" (1/1) ... [2022-11-16 12:10:10,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:10" (1/1) ... [2022-11-16 12:10:10,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:10" (1/1) ... [2022-11-16 12:10:10,965 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:10" (1/1) ... [2022-11-16 12:10:10,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:10" (1/1) ... [2022-11-16 12:10:11,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:10:11,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:10:11,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:10:11,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:10:11,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:10" (1/1) ... [2022-11-16 12:10:11,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:10:11,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:11,068 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:10:11,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:10:11,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:10:11,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:10:11,610 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:10:11,628 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:10:15,012 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:10:15,035 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:10:15,035 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:10:15,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:10:15 BoogieIcfgContainer [2022-11-16 12:10:15,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:10:15,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:10:15,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:10:15,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:10:15,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:10:09" (1/3) ... [2022-11-16 12:10:15,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cbdd982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:10:15, skipping insertion in model container [2022-11-16 12:10:15,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:10" (2/3) ... [2022-11-16 12:10:15,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cbdd982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:10:15, skipping insertion in model container [2022-11-16 12:10:15,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:10:15" (3/3) ... [2022-11-16 12:10:15,053 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.resistance.1.prop1-back-serstep.c [2022-11-16 12:10:15,076 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:10:15,076 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:10:15,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:10:15,190 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;@581cbe96, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:10:15,191 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:10:15,207 INFO L276 IsEmpty]: Start isEmpty. Operand has 479 states, 477 states have (on average 1.6624737945492662) internal successors, (793), 478 states have internal predecessors, (793), 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) [2022-11-16 12:10:15,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-16 12:10:15,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:15,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:15,235 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:10:15,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:15,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1313805690, now seen corresponding path program 1 times [2022-11-16 12:10:15,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:15,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536892382] [2022-11-16 12:10:15,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:15,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:15,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:16,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:16,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:16,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536892382] [2022-11-16 12:10:16,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536892382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:16,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:16,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:10:16,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781723731] [2022-11-16 12:10:16,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:16,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:10:16,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:16,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:10:16,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:10:16,309 INFO L87 Difference]: Start difference. First operand has 479 states, 477 states have (on average 1.6624737945492662) internal successors, (793), 478 states have internal predecessors, (793), 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 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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) [2022-11-16 12:10:16,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:16,529 INFO L93 Difference]: Finished difference Result 1582 states and 2632 transitions. [2022-11-16 12:10:16,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:10:16,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 111 [2022-11-16 12:10:16,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:16,549 INFO L225 Difference]: With dead ends: 1582 [2022-11-16 12:10:16,549 INFO L226 Difference]: Without dead ends: 1105 [2022-11-16 12:10:16,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:10:16,558 INFO L413 NwaCegarLoop]: 1050 mSDtfsCounter, 2337 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2337 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:16,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2337 Valid, 2358 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:10:16,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-11-16 12:10:16,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 477. [2022-11-16 12:10:16,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 476 states have (on average 1.6575630252100841) internal successors, (789), 476 states have internal predecessors, (789), 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) [2022-11-16 12:10:16,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 789 transitions. [2022-11-16 12:10:16,652 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 789 transitions. Word has length 111 [2022-11-16 12:10:16,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:16,653 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 789 transitions. [2022-11-16 12:10:16,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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) [2022-11-16 12:10:16,653 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 789 transitions. [2022-11-16 12:10:16,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-16 12:10:16,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:16,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:16,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:10:16,656 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:10:16,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:16,657 INFO L85 PathProgramCache]: Analyzing trace with hash -2071545142, now seen corresponding path program 1 times [2022-11-16 12:10:16,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:16,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391168025] [2022-11-16 12:10:16,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:16,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:17,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:17,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:17,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391168025] [2022-11-16 12:10:17,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391168025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:17,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:17,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:10:17,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606035487] [2022-11-16 12:10:17,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:17,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:10:17,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:17,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:10:17,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:10:17,355 INFO L87 Difference]: Start difference. First operand 477 states and 789 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2022-11-16 12:10:17,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:17,731 INFO L93 Difference]: Finished difference Result 1889 states and 3134 transitions. [2022-11-16 12:10:17,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:10:17,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 112 [2022-11-16 12:10:17,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:17,741 INFO L225 Difference]: With dead ends: 1889 [2022-11-16 12:10:17,741 INFO L226 Difference]: Without dead ends: 1414 [2022-11-16 12:10:17,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:10:17,744 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 1971 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1971 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:17,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1971 Valid, 2606 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:10:17,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2022-11-16 12:10:17,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 635. [2022-11-16 12:10:17,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.6577287066246056) internal successors, (1051), 634 states have internal predecessors, (1051), 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) [2022-11-16 12:10:17,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1051 transitions. [2022-11-16 12:10:17,770 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1051 transitions. Word has length 112 [2022-11-16 12:10:17,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:17,771 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 1051 transitions. [2022-11-16 12:10:17,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2022-11-16 12:10:17,772 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1051 transitions. [2022-11-16 12:10:17,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2022-11-16 12:10:17,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:17,779 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:10:17,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:10:17,780 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:10:17,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:17,781 INFO L85 PathProgramCache]: Analyzing trace with hash 545782956, now seen corresponding path program 1 times [2022-11-16 12:10:17,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:17,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081361155] [2022-11-16 12:10:17,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:17,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:36,574 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:36,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:36,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081361155] [2022-11-16 12:10:36,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081361155] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:36,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413402423] [2022-11-16 12:10:36,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:36,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:36,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:36,598 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:36,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:10:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:38,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 3490 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-16 12:10:38,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:42,450 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:42,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:43,574 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-11-16 12:10:43,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413402423] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:43,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:10:43,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 8] total 15 [2022-11-16 12:10:43,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291106240] [2022-11-16 12:10:43,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:43,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:10:43,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:43,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:10:43,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:10:43,580 INFO L87 Difference]: Start difference. First operand 635 states and 1051 transitions. Second operand has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 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) [2022-11-16 12:10:47,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:47,818 INFO L93 Difference]: Finished difference Result 3165 states and 5160 transitions. [2022-11-16 12:10:47,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:10:47,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 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 427 [2022-11-16 12:10:47,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:47,840 INFO L225 Difference]: With dead ends: 3165 [2022-11-16 12:10:47,843 INFO L226 Difference]: Without dead ends: 2690 [2022-11-16 12:10:47,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 862 GetRequests, 847 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:10:47,852 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 4366 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 2732 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4366 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 3007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 2732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:47,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4366 Valid, 1764 Invalid, 3007 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [275 Valid, 2732 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-16 12:10:47,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2022-11-16 12:10:47,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 638. [2022-11-16 12:10:47,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 637 states have (on average 1.6562009419152277) internal successors, (1055), 637 states have internal predecessors, (1055), 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) [2022-11-16 12:10:47,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1055 transitions. [2022-11-16 12:10:47,898 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1055 transitions. Word has length 427 [2022-11-16 12:10:47,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:47,899 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 1055 transitions. [2022-11-16 12:10:47,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 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) [2022-11-16 12:10:47,899 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1055 transitions. [2022-11-16 12:10:47,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2022-11-16 12:10:47,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:47,908 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:10:47,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 12:10:48,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:48,123 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:10:48,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:48,123 INFO L85 PathProgramCache]: Analyzing trace with hash 545842538, now seen corresponding path program 1 times [2022-11-16 12:10:48,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:48,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884014132] [2022-11-16 12:10:48,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:48,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:12,862 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 48 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:11:12,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:12,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884014132] [2022-11-16 12:11:12,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884014132] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:11:12,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778857400] [2022-11-16 12:11:12,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:12,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:11:12,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:11:12,869 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:11:12,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:11:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:14,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 3490 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-16 12:11:14,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:11:19,097 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:11:19,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:11:19,925 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-11-16 12:11:19,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778857400] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:11:19,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:11:19,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 8] total 15 [2022-11-16 12:11:19,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299169541] [2022-11-16 12:11:19,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:11:19,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:11:19,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:19,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:11:19,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:11:19,929 INFO L87 Difference]: Start difference. First operand 638 states and 1055 transitions. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2022-11-16 12:11:22,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:11:22,497 INFO L93 Difference]: Finished difference Result 2051 states and 3399 transitions. [2022-11-16 12:11:22,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:11:22,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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 427 [2022-11-16 12:11:22,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:11:22,504 INFO L225 Difference]: With dead ends: 2051 [2022-11-16 12:11:22,504 INFO L226 Difference]: Without dead ends: 1573 [2022-11-16 12:11:22,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 861 GetRequests, 847 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:11:22,509 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 2327 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2327 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:11:22,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2327 Valid, 1026 Invalid, 1857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1855 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-16 12:11:22,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2022-11-16 12:11:22,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 635. [2022-11-16 12:11:22,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.6577287066246056) internal successors, (1051), 634 states have internal predecessors, (1051), 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) [2022-11-16 12:11:22,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1051 transitions. [2022-11-16 12:11:22,535 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1051 transitions. Word has length 427 [2022-11-16 12:11:22,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:11:22,536 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 1051 transitions. [2022-11-16 12:11:22,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2022-11-16 12:11:22,537 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1051 transitions. [2022-11-16 12:11:22,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2022-11-16 12:11:22,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:11:22,547 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:11:22,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:11:22,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:11:22,763 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:11:22,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:22,763 INFO L85 PathProgramCache]: Analyzing trace with hash -471029378, now seen corresponding path program 1 times [2022-11-16 12:11:22,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:22,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195771351] [2022-11-16 12:11:22,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:22,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:32,687 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:11:32,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:32,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195771351] [2022-11-16 12:11:32,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195771351] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:11:32,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810910258] [2022-11-16 12:11:32,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:32,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:11:32,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:11:32,699 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:11:32,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:11:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:34,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 3493 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-16 12:11:34,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:11:38,042 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:11:38,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:11:39,259 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-16 12:11:39,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810910258] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:11:39,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:11:39,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 9] total 17 [2022-11-16 12:11:39,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848514850] [2022-11-16 12:11:39,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:11:39,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:11:39,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:39,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:11:39,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:11:39,262 INFO L87 Difference]: Start difference. First operand 635 states and 1051 transitions. Second operand has 6 states, 6 states have (on average 54.5) internal successors, (327), 6 states have internal predecessors, (327), 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) [2022-11-16 12:11:43,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:11:43,128 INFO L93 Difference]: Finished difference Result 2400 states and 3927 transitions. [2022-11-16 12:11:43,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:11:43,135 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 54.5) internal successors, (327), 6 states have internal predecessors, (327), 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 428 [2022-11-16 12:11:43,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:11:43,143 INFO L225 Difference]: With dead ends: 2400 [2022-11-16 12:11:43,143 INFO L226 Difference]: Without dead ends: 1923 [2022-11-16 12:11:43,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 868 GetRequests, 849 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:11:43,146 INFO L413 NwaCegarLoop]: 938 mSDtfsCounter, 2586 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 4144 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2586 SdHoareTripleChecker+Valid, 2228 SdHoareTripleChecker+Invalid, 4282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 4144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:11:43,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2586 Valid, 2228 Invalid, 4282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 4144 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-16 12:11:43,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2022-11-16 12:11:43,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 641. [2022-11-16 12:11:43,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 640 states have (on average 1.65625) internal successors, (1060), 640 states have internal predecessors, (1060), 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) [2022-11-16 12:11:43,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1060 transitions. [2022-11-16 12:11:43,173 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1060 transitions. Word has length 428 [2022-11-16 12:11:43,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:11:43,174 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 1060 transitions. [2022-11-16 12:11:43,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.5) internal successors, (327), 6 states have internal predecessors, (327), 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) [2022-11-16 12:11:43,175 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1060 transitions. [2022-11-16 12:11:43,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2022-11-16 12:11:43,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:11:43,185 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:11:43,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:11:43,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:11:43,399 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:11:43,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:43,399 INFO L85 PathProgramCache]: Analyzing trace with hash -470969796, now seen corresponding path program 1 times [2022-11-16 12:11:43,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:43,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502633780] [2022-11-16 12:11:43,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:43,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:11:53,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:53,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502633780] [2022-11-16 12:11:53,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502633780] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:11:53,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174005961] [2022-11-16 12:11:53,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:53,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:11:53,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:11:53,269 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:11:53,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:11:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:54,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 3493 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-16 12:11:54,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:11:57,961 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:11:57,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:11:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-16 12:11:58,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174005961] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:11:58,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:11:58,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 10] total 16 [2022-11-16 12:11:58,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238692326] [2022-11-16 12:11:58,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:11:58,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:11:58,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:58,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:11:58,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:11:58,616 INFO L87 Difference]: Start difference. First operand 641 states and 1060 transitions. Second operand has 6 states, 6 states have (on average 54.5) internal successors, (327), 6 states have internal predecessors, (327), 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) [2022-11-16 12:12:01,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:01,145 INFO L93 Difference]: Finished difference Result 2400 states and 3928 transitions. [2022-11-16 12:12:01,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:12:01,146 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 54.5) internal successors, (327), 6 states have internal predecessors, (327), 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 428 [2022-11-16 12:12:01,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:01,153 INFO L225 Difference]: With dead ends: 2400 [2022-11-16 12:12:01,153 INFO L226 Difference]: Without dead ends: 1917 [2022-11-16 12:12:01,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 849 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:12:01,155 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 3752 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 2488 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3752 SdHoareTripleChecker+Valid, 2321 SdHoareTripleChecker+Invalid, 2626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 2488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:01,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3752 Valid, 2321 Invalid, 2626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 2488 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-16 12:12:01,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2022-11-16 12:12:01,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 635. [2022-11-16 12:12:01,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.6577287066246056) internal successors, (1051), 634 states have internal predecessors, (1051), 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) [2022-11-16 12:12:01,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1051 transitions. [2022-11-16 12:12:01,175 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1051 transitions. Word has length 428 [2022-11-16 12:12:01,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:01,176 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 1051 transitions. [2022-11-16 12:12:01,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.5) internal successors, (327), 6 states have internal predecessors, (327), 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) [2022-11-16 12:12:01,177 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1051 transitions. [2022-11-16 12:12:01,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-11-16 12:12:01,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:01,184 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:12:01,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:12:01,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:01,400 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:01,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:01,400 INFO L85 PathProgramCache]: Analyzing trace with hash -117101422, now seen corresponding path program 1 times [2022-11-16 12:12:01,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:01,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151503471] [2022-11-16 12:12:01,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:01,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:10,224 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:12:10,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:10,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151503471] [2022-11-16 12:12:10,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151503471] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:12:10,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443738547] [2022-11-16 12:12:10,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:10,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:10,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:12:10,227 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:12:10,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:12:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:11,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 3496 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-16 12:12:11,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:12:14,614 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:12:14,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:12:15,777 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-16 12:12:15,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443738547] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:12:15,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:12:15,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 10] total 19 [2022-11-16 12:12:15,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240909843] [2022-11-16 12:12:15,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:15,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:12:15,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:15,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:12:15,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:12:15,784 INFO L87 Difference]: Start difference. First operand 635 states and 1051 transitions. Second operand has 7 states, 7 states have (on average 47.142857142857146) internal successors, (330), 7 states have internal predecessors, (330), 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) [2022-11-16 12:12:21,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:21,138 INFO L93 Difference]: Finished difference Result 3355 states and 5510 transitions. [2022-11-16 12:12:21,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:12:21,139 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 47.142857142857146) internal successors, (330), 7 states have internal predecessors, (330), 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 429 [2022-11-16 12:12:21,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:21,151 INFO L225 Difference]: With dead ends: 3355 [2022-11-16 12:12:21,151 INFO L226 Difference]: Without dead ends: 2875 [2022-11-16 12:12:21,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 854 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2022-11-16 12:12:21,154 INFO L413 NwaCegarLoop]: 1159 mSDtfsCounter, 4568 mSDsluCounter, 2184 mSDsCounter, 0 mSdLazyCounter, 6362 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4568 SdHoareTripleChecker+Valid, 3343 SdHoareTripleChecker+Invalid, 6500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 6362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:21,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4568 Valid, 3343 Invalid, 6500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 6362 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-16 12:12:21,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2022-11-16 12:12:21,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 644. [2022-11-16 12:12:21,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 643 states have (on average 1.656298600311042) internal successors, (1065), 643 states have internal predecessors, (1065), 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) [2022-11-16 12:12:21,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1065 transitions. [2022-11-16 12:12:21,192 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1065 transitions. Word has length 429 [2022-11-16 12:12:21,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:21,193 INFO L495 AbstractCegarLoop]: Abstraction has 644 states and 1065 transitions. [2022-11-16 12:12:21,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 47.142857142857146) internal successors, (330), 7 states have internal predecessors, (330), 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) [2022-11-16 12:12:21,193 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1065 transitions. [2022-11-16 12:12:21,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-11-16 12:12:21,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:21,197 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:12:21,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:12:21,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:21,411 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:21,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:21,411 INFO L85 PathProgramCache]: Analyzing trace with hash -117041840, now seen corresponding path program 1 times [2022-11-16 12:12:21,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:21,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543125859] [2022-11-16 12:12:21,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:21,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:33,621 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 48 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:12:33,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:33,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543125859] [2022-11-16 12:12:33,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543125859] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:12:33,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838970427] [2022-11-16 12:12:33,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:33,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:33,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:12:33,624 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:12:33,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:12:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:35,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 3496 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-16 12:12:35,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:12:38,586 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:12:38,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:12:39,518 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-16 12:12:39,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838970427] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:12:39,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:12:39,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 11] total 18 [2022-11-16 12:12:39,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694409277] [2022-11-16 12:12:39,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:39,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:12:39,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:39,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:12:39,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:12:39,524 INFO L87 Difference]: Start difference. First operand 644 states and 1065 transitions. Second operand has 7 states, 7 states have (on average 47.142857142857146) internal successors, (330), 7 states have internal predecessors, (330), 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) [2022-11-16 12:12:43,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:43,654 INFO L93 Difference]: Finished difference Result 2895 states and 4746 transitions. [2022-11-16 12:12:43,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:12:43,655 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 47.142857142857146) internal successors, (330), 7 states have internal predecessors, (330), 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 429 [2022-11-16 12:12:43,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:43,666 INFO L225 Difference]: With dead ends: 2895 [2022-11-16 12:12:43,666 INFO L226 Difference]: Without dead ends: 2406 [2022-11-16 12:12:43,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 883 GetRequests, 855 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=727, Unknown=0, NotChecked=0, Total=870 [2022-11-16 12:12:43,669 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 4125 mSDsluCounter, 2986 mSDsCounter, 0 mSdLazyCounter, 3914 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4125 SdHoareTripleChecker+Valid, 3936 SdHoareTripleChecker+Invalid, 4052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 3914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:43,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4125 Valid, 3936 Invalid, 4052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 3914 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-16 12:12:43,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2406 states. [2022-11-16 12:12:43,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2406 to 635. [2022-11-16 12:12:43,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.6577287066246056) internal successors, (1051), 634 states have internal predecessors, (1051), 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) [2022-11-16 12:12:43,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1051 transitions. [2022-11-16 12:12:43,695 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1051 transitions. Word has length 429 [2022-11-16 12:12:43,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:43,696 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 1051 transitions. [2022-11-16 12:12:43,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 47.142857142857146) internal successors, (330), 7 states have internal predecessors, (330), 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) [2022-11-16 12:12:43,696 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1051 transitions. [2022-11-16 12:12:43,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 12:12:43,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:43,700 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:12:43,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:12:43,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 12:12:43,921 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:43,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:43,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1589827994, now seen corresponding path program 1 times [2022-11-16 12:12:43,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:43,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199341645] [2022-11-16 12:12:43,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:43,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:54,544 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:12:54,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:54,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199341645] [2022-11-16 12:12:54,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199341645] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:12:54,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266275769] [2022-11-16 12:12:54,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:54,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:54,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:12:54,546 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:12:54,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:12:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:56,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 3499 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-16 12:12:56,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:12:59,957 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:12:59,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:13:01,415 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-16 12:13:01,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266275769] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:13:01,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:13:01,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6, 11] total 21 [2022-11-16 12:13:01,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246805537] [2022-11-16 12:13:01,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:01,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:13:01,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:01,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:13:01,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:13:01,421 INFO L87 Difference]: Start difference. First operand 635 states and 1051 transitions. Second operand has 8 states, 8 states have (on average 41.625) internal successors, (333), 8 states have internal predecessors, (333), 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) [2022-11-16 12:13:08,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:08,316 INFO L93 Difference]: Finished difference Result 3391 states and 5570 transitions. [2022-11-16 12:13:08,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:13:08,317 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 41.625) internal successors, (333), 8 states have internal predecessors, (333), 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 430 [2022-11-16 12:13:08,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:08,325 INFO L225 Difference]: With dead ends: 3391 [2022-11-16 12:13:08,325 INFO L226 Difference]: Without dead ends: 2908 [2022-11-16 12:13:08,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 858 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=169, Invalid=953, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 12:13:08,327 INFO L413 NwaCegarLoop]: 1152 mSDtfsCounter, 6142 mSDsluCounter, 2925 mSDsCounter, 0 mSdLazyCounter, 7959 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6142 SdHoareTripleChecker+Valid, 4077 SdHoareTripleChecker+Invalid, 8097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 7959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:08,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6142 Valid, 4077 Invalid, 8097 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 7959 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-16 12:13:08,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2022-11-16 12:13:08,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 647. [2022-11-16 12:13:08,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 1.6563467492260062) internal successors, (1070), 646 states have internal predecessors, (1070), 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) [2022-11-16 12:13:08,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1070 transitions. [2022-11-16 12:13:08,355 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1070 transitions. Word has length 430 [2022-11-16 12:13:08,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:08,356 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 1070 transitions. [2022-11-16 12:13:08,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 41.625) internal successors, (333), 8 states have internal predecessors, (333), 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) [2022-11-16 12:13:08,357 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1070 transitions. [2022-11-16 12:13:08,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-16 12:13:08,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:08,360 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:08,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:08,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:08,580 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:13:08,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:08,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1589887576, now seen corresponding path program 1 times [2022-11-16 12:13:08,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:08,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622749574] [2022-11-16 12:13:08,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:08,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:18,033 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:18,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:18,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622749574] [2022-11-16 12:13:18,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622749574] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:13:18,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324517281] [2022-11-16 12:13:18,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:18,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:18,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:18,036 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:18,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:13:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:19,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 3499 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-16 12:13:19,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:23,596 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:23,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:13:24,518 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-16 12:13:24,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324517281] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:13:24,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:13:24,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6, 12] total 20 [2022-11-16 12:13:24,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390259378] [2022-11-16 12:13:24,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:24,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:13:24,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:24,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:13:24,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:13:24,522 INFO L87 Difference]: Start difference. First operand 647 states and 1070 transitions. Second operand has 8 states, 8 states have (on average 41.625) internal successors, (333), 8 states have internal predecessors, (333), 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) [2022-11-16 12:13:29,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:29,270 INFO L93 Difference]: Finished difference Result 2932 states and 4806 transitions. [2022-11-16 12:13:29,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:13:29,271 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 41.625) internal successors, (333), 8 states have internal predecessors, (333), 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 430 [2022-11-16 12:13:29,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:29,279 INFO L225 Difference]: With dead ends: 2932 [2022-11-16 12:13:29,280 INFO L226 Difference]: Without dead ends: 2437 [2022-11-16 12:13:29,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 892 GetRequests, 857 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=218, Invalid=1114, Unknown=0, NotChecked=0, Total=1332 [2022-11-16 12:13:29,282 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 5321 mSDsluCounter, 3015 mSDsCounter, 0 mSdLazyCounter, 4825 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5321 SdHoareTripleChecker+Valid, 3963 SdHoareTripleChecker+Invalid, 4963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 4825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:29,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5321 Valid, 3963 Invalid, 4963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 4825 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-16 12:13:29,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2022-11-16 12:13:29,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 635. [2022-11-16 12:13:29,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.6577287066246056) internal successors, (1051), 634 states have internal predecessors, (1051), 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) [2022-11-16 12:13:29,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1051 transitions. [2022-11-16 12:13:29,306 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1051 transitions. Word has length 430 [2022-11-16 12:13:29,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:29,307 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 1051 transitions. [2022-11-16 12:13:29,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 41.625) internal successors, (333), 8 states have internal predecessors, (333), 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) [2022-11-16 12:13:29,308 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1051 transitions. [2022-11-16 12:13:29,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2022-11-16 12:13:29,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:29,312 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:13:29,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:29,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:29,532 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:13:29,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:29,533 INFO L85 PathProgramCache]: Analyzing trace with hash -580027526, now seen corresponding path program 1 times [2022-11-16 12:13:29,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:29,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619418128] [2022-11-16 12:13:29,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:29,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:37,298 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 48 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:37,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:37,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619418128] [2022-11-16 12:13:37,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619418128] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:13:37,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325904313] [2022-11-16 12:13:37,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:37,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:37,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:37,303 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:37,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:13:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:38,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 3502 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-16 12:13:38,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:42,874 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:42,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:13:44,344 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-16 12:13:44,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325904313] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:13:44,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:13:44,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 12] total 24 [2022-11-16 12:13:44,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205898527] [2022-11-16 12:13:44,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:44,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:13:44,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:44,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:13:44,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:13:44,347 INFO L87 Difference]: Start difference. First operand 635 states and 1051 transitions. Second operand has 9 states, 9 states have (on average 37.333333333333336) internal successors, (336), 9 states have internal predecessors, (336), 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) [2022-11-16 12:13:52,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:52,295 INFO L93 Difference]: Finished difference Result 3427 states and 5630 transitions. [2022-11-16 12:13:52,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:13:52,295 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 37.333333333333336) internal successors, (336), 9 states have internal predecessors, (336), 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 431 [2022-11-16 12:13:52,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:52,306 INFO L225 Difference]: With dead ends: 3427 [2022-11-16 12:13:52,306 INFO L226 Difference]: Without dead ends: 2941 [2022-11-16 12:13:52,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 862 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=231, Invalid=1409, Unknown=0, NotChecked=0, Total=1640 [2022-11-16 12:13:52,309 INFO L413 NwaCegarLoop]: 1145 mSDtfsCounter, 7721 mSDsluCounter, 3664 mSDsCounter, 0 mSdLazyCounter, 9558 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7721 SdHoareTripleChecker+Valid, 4809 SdHoareTripleChecker+Invalid, 9696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 9558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:52,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7721 Valid, 4809 Invalid, 9696 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 9558 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-16 12:13:52,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2022-11-16 12:13:52,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 650. [2022-11-16 12:13:52,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 649 states have (on average 1.6563944530046224) internal successors, (1075), 649 states have internal predecessors, (1075), 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) [2022-11-16 12:13:52,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1075 transitions. [2022-11-16 12:13:52,338 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1075 transitions. Word has length 431 [2022-11-16 12:13:52,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:52,339 INFO L495 AbstractCegarLoop]: Abstraction has 650 states and 1075 transitions. [2022-11-16 12:13:52,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 37.333333333333336) internal successors, (336), 9 states have internal predecessors, (336), 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) [2022-11-16 12:13:52,339 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1075 transitions. [2022-11-16 12:13:52,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2022-11-16 12:13:52,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:52,343 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:13:52,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:52,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 12:13:52,557 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:13:52,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:52,558 INFO L85 PathProgramCache]: Analyzing trace with hash -579967944, now seen corresponding path program 1 times [2022-11-16 12:13:52,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:52,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841004937] [2022-11-16 12:13:52,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:52,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:07,703 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 48 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:07,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:07,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841004937] [2022-11-16 12:14:07,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841004937] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:14:07,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083808] [2022-11-16 12:14:07,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:07,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:07,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:07,706 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:14:07,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:14:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:09,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 3502 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-16 12:14:09,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:13,243 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:13,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:13,993 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-16 12:14:13,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083808] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:14:13,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:14:13,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 13] total 22 [2022-11-16 12:14:13,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101748252] [2022-11-16 12:14:13,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:13,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:14:13,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:13,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:14:13,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:14:13,996 INFO L87 Difference]: Start difference. First operand 650 states and 1075 transitions. Second operand has 9 states, 9 states have (on average 37.333333333333336) internal successors, (336), 9 states have internal predecessors, (336), 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) [2022-11-16 12:14:19,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:19,436 INFO L93 Difference]: Finished difference Result 2972 states and 4872 transitions. [2022-11-16 12:14:19,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 12:14:19,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 37.333333333333336) internal successors, (336), 9 states have internal predecessors, (336), 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 431 [2022-11-16 12:14:19,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:19,443 INFO L225 Difference]: With dead ends: 2972 [2022-11-16 12:14:19,444 INFO L226 Difference]: Without dead ends: 2471 [2022-11-16 12:14:19,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 904 GetRequests, 862 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=305, Invalid=1587, Unknown=0, NotChecked=0, Total=1892 [2022-11-16 12:14:19,447 INFO L413 NwaCegarLoop]: 946 mSDtfsCounter, 6113 mSDsluCounter, 3716 mSDsCounter, 0 mSdLazyCounter, 5769 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6113 SdHoareTripleChecker+Valid, 4662 SdHoareTripleChecker+Invalid, 5907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 5769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:19,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6113 Valid, 4662 Invalid, 5907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 5769 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-16 12:14:19,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2022-11-16 12:14:19,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 635. [2022-11-16 12:14:19,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.6577287066246056) internal successors, (1051), 634 states have internal predecessors, (1051), 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) [2022-11-16 12:14:19,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1051 transitions. [2022-11-16 12:14:19,472 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1051 transitions. Word has length 431 [2022-11-16 12:14:19,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:19,473 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 1051 transitions. [2022-11-16 12:14:19,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 37.333333333333336) internal successors, (336), 9 states have internal predecessors, (336), 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) [2022-11-16 12:14:19,474 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1051 transitions. [2022-11-16 12:14:19,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2022-11-16 12:14:19,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:19,478 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:14:19,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:19,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 12:14:19,700 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:14:19,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:19,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1652980404, now seen corresponding path program 1 times [2022-11-16 12:14:19,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:19,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572230978] [2022-11-16 12:14:19,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:19,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:28,958 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:28,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:28,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572230978] [2022-11-16 12:14:28,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572230978] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:14:28,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20261342] [2022-11-16 12:14:28,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:28,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:28,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:28,960 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:14:28,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:14:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:30,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 3505 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-16 12:14:30,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:34,729 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:34,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:36,276 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-16 12:14:36,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20261342] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:14:36,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:14:36,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6, 13] total 25 [2022-11-16 12:14:36,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887727637] [2022-11-16 12:14:36,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:36,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:14:36,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:36,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:14:36,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:14:36,279 INFO L87 Difference]: Start difference. First operand 635 states and 1051 transitions. Second operand has 10 states, 10 states have (on average 33.9) internal successors, (339), 10 states have internal predecessors, (339), 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) [2022-11-16 12:14:46,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:46,045 INFO L93 Difference]: Finished difference Result 3463 states and 5690 transitions. [2022-11-16 12:14:46,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 12:14:46,046 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 33.9) internal successors, (339), 10 states have internal predecessors, (339), 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 432 [2022-11-16 12:14:46,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:46,053 INFO L225 Difference]: With dead ends: 3463 [2022-11-16 12:14:46,053 INFO L226 Difference]: Without dead ends: 2974 [2022-11-16 12:14:46,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 910 GetRequests, 866 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=299, Invalid=1771, Unknown=0, NotChecked=0, Total=2070 [2022-11-16 12:14:46,057 INFO L413 NwaCegarLoop]: 1138 mSDtfsCounter, 8892 mSDsluCounter, 4474 mSDsCounter, 0 mSdLazyCounter, 11658 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8892 SdHoareTripleChecker+Valid, 5612 SdHoareTripleChecker+Invalid, 11796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 11658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:46,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8892 Valid, 5612 Invalid, 11796 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 11658 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-11-16 12:14:46,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2022-11-16 12:14:46,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 653. [2022-11-16 12:14:46,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 652 states have (on average 1.656441717791411) internal successors, (1080), 652 states have internal predecessors, (1080), 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) [2022-11-16 12:14:46,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 1080 transitions. [2022-11-16 12:14:46,083 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 1080 transitions. Word has length 432 [2022-11-16 12:14:46,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:46,084 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 1080 transitions. [2022-11-16 12:14:46,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.9) internal successors, (339), 10 states have internal predecessors, (339), 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) [2022-11-16 12:14:46,084 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 1080 transitions. [2022-11-16 12:14:46,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2022-11-16 12:14:46,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:46,088 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:14:46,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-16 12:14:46,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:46,310 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:14:46,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:46,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1653039986, now seen corresponding path program 1 times [2022-11-16 12:14:46,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:46,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254165181] [2022-11-16 12:14:46,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:46,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:54,520 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:54,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:54,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254165181] [2022-11-16 12:14:54,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254165181] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:14:54,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719643908] [2022-11-16 12:14:54,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:54,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:54,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:54,524 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:14:54,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 12:14:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:56,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 3505 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-16 12:14:56,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:00,222 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:00,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:15:01,077 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-16 12:15:01,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719643908] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:15:01,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:15:01,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6, 14] total 24 [2022-11-16 12:15:01,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919432083] [2022-11-16 12:15:01,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:01,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:15:01,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:01,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:15:01,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:15:01,079 INFO L87 Difference]: Start difference. First operand 653 states and 1080 transitions. Second operand has 10 states, 10 states have (on average 33.9) internal successors, (339), 10 states have internal predecessors, (339), 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) [2022-11-16 12:15:07,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:07,540 INFO L93 Difference]: Finished difference Result 3012 states and 4938 transitions. [2022-11-16 12:15:07,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 12:15:07,541 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 33.9) internal successors, (339), 10 states have internal predecessors, (339), 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 432 [2022-11-16 12:15:07,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:07,544 INFO L225 Difference]: With dead ends: 3012 [2022-11-16 12:15:07,544 INFO L226 Difference]: Without dead ends: 2505 [2022-11-16 12:15:07,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 865 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=408, Invalid=2142, Unknown=0, NotChecked=0, Total=2550 [2022-11-16 12:15:07,545 INFO L413 NwaCegarLoop]: 944 mSDtfsCounter, 6501 mSDsluCounter, 5092 mSDsCounter, 0 mSdLazyCounter, 6742 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6501 SdHoareTripleChecker+Valid, 6036 SdHoareTripleChecker+Invalid, 6880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 6742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:07,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6501 Valid, 6036 Invalid, 6880 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 6742 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-16 12:15:07,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2505 states. [2022-11-16 12:15:07,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 635. [2022-11-16 12:15:07,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.6577287066246056) internal successors, (1051), 634 states have internal predecessors, (1051), 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) [2022-11-16 12:15:07,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1051 transitions. [2022-11-16 12:15:07,565 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1051 transitions. Word has length 432 [2022-11-16 12:15:07,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:07,566 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 1051 transitions. [2022-11-16 12:15:07,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.9) internal successors, (339), 10 states have internal predecessors, (339), 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) [2022-11-16 12:15:07,566 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1051 transitions. [2022-11-16 12:15:07,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2022-11-16 12:15:07,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:07,570 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:15:07,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:15:07,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 12:15:07,791 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:07,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:07,791 INFO L85 PathProgramCache]: Analyzing trace with hash 900968288, now seen corresponding path program 1 times [2022-11-16 12:15:07,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:07,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574307133] [2022-11-16 12:15:07,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:07,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:18,039 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:18,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:18,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574307133] [2022-11-16 12:15:18,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574307133] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:15:18,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992427351] [2022-11-16 12:15:18,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:18,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:18,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:18,041 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:15:18,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 12:15:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:19,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 3508 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-16 12:15:19,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:23,404 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:23,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:15:24,896 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-16 12:15:24,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992427351] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:15:24,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:15:24,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [6, 14] total 27 [2022-11-16 12:15:24,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571952546] [2022-11-16 12:15:24,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:24,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:15:24,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:24,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:15:24,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2022-11-16 12:15:24,899 INFO L87 Difference]: Start difference. First operand 635 states and 1051 transitions. Second operand has 11 states, 11 states have (on average 31.09090909090909) internal successors, (342), 11 states have internal predecessors, (342), 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) [2022-11-16 12:15:35,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:35,003 INFO L93 Difference]: Finished difference Result 3499 states and 5750 transitions. [2022-11-16 12:15:35,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 12:15:35,006 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 31.09090909090909) internal successors, (342), 11 states have internal predecessors, (342), 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 433 [2022-11-16 12:15:35,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:35,012 INFO L225 Difference]: With dead ends: 3499 [2022-11-16 12:15:35,012 INFO L226 Difference]: Without dead ends: 3007 [2022-11-16 12:15:35,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 920 GetRequests, 870 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=379, Invalid=2273, Unknown=0, NotChecked=0, Total=2652 [2022-11-16 12:15:35,016 INFO L413 NwaCegarLoop]: 1131 mSDtfsCounter, 10894 mSDsluCounter, 5136 mSDsCounter, 0 mSdLazyCounter, 12762 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10894 SdHoareTripleChecker+Valid, 6267 SdHoareTripleChecker+Invalid, 12900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 12762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:35,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10894 Valid, 6267 Invalid, 12900 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 12762 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-11-16 12:15:35,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2022-11-16 12:15:35,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 656. [2022-11-16 12:15:35,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 655 states have (on average 1.6564885496183206) internal successors, (1085), 655 states have internal predecessors, (1085), 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) [2022-11-16 12:15:35,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1085 transitions. [2022-11-16 12:15:35,040 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1085 transitions. Word has length 433 [2022-11-16 12:15:35,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:35,041 INFO L495 AbstractCegarLoop]: Abstraction has 656 states and 1085 transitions. [2022-11-16 12:15:35,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 31.09090909090909) internal successors, (342), 11 states have internal predecessors, (342), 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) [2022-11-16 12:15:35,041 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1085 transitions. [2022-11-16 12:15:35,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2022-11-16 12:15:35,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:35,045 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:15:35,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:15:35,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 12:15:35,263 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:35,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:35,263 INFO L85 PathProgramCache]: Analyzing trace with hash 901027870, now seen corresponding path program 1 times [2022-11-16 12:15:35,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:35,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229553276] [2022-11-16 12:15:35,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:35,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:45,862 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-16 12:15:45,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:45,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229553276] [2022-11-16 12:15:45,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229553276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:45,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:45,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:15:45,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568332761] [2022-11-16 12:15:45,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:45,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:15:45,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:45,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:15:45,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:15:45,864 INFO L87 Difference]: Start difference. First operand 656 states and 1085 transitions. Second operand has 10 states, 10 states have (on average 34.2) internal successors, (342), 10 states have internal predecessors, (342), 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) [2022-11-16 12:15:46,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:46,303 INFO L93 Difference]: Finished difference Result 2214 states and 3666 transitions. [2022-11-16 12:15:46,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 12:15:46,305 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 34.2) internal successors, (342), 10 states have internal predecessors, (342), 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 433 [2022-11-16 12:15:46,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:46,309 INFO L225 Difference]: With dead ends: 2214 [2022-11-16 12:15:46,309 INFO L226 Difference]: Without dead ends: 1701 [2022-11-16 12:15:46,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=222, Invalid=590, Unknown=0, NotChecked=0, Total=812 [2022-11-16 12:15:46,311 INFO L413 NwaCegarLoop]: 1032 mSDtfsCounter, 7120 mSDsluCounter, 8030 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7120 SdHoareTripleChecker+Valid, 9062 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:46,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7120 Valid, 9062 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:15:46,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2022-11-16 12:15:46,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 635. [2022-11-16 12:15:46,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.6577287066246056) internal successors, (1051), 634 states have internal predecessors, (1051), 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) [2022-11-16 12:15:46,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1051 transitions. [2022-11-16 12:15:46,328 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1051 transitions. Word has length 433 [2022-11-16 12:15:46,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:46,329 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 1051 transitions. [2022-11-16 12:15:46,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 34.2) internal successors, (342), 10 states have internal predecessors, (342), 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) [2022-11-16 12:15:46,329 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1051 transitions. [2022-11-16 12:15:46,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2022-11-16 12:15:46,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:46,333 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:15:46,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:15:46,333 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:46,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:46,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1686066128, now seen corresponding path program 1 times [2022-11-16 12:15:46,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:46,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869028657] [2022-11-16 12:15:46,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:46,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:55,395 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:55,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:55,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869028657] [2022-11-16 12:15:55,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869028657] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:15:55,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700027014] [2022-11-16 12:15:55,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:55,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:55,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:55,397 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:15:55,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 12:15:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:57,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 3511 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-16 12:15:57,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:01,007 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:01,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:16:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-16 12:16:02,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700027014] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:16:02,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:16:02,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [6, 15] total 29 [2022-11-16 12:16:02,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654739738] [2022-11-16 12:16:02,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:02,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:16:02,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:02,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:16:02,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2022-11-16 12:16:02,538 INFO L87 Difference]: Start difference. First operand 635 states and 1051 transitions. Second operand has 12 states, 12 states have (on average 28.75) internal successors, (345), 12 states have internal predecessors, (345), 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) [2022-11-16 12:16:13,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:13,552 INFO L93 Difference]: Finished difference Result 3535 states and 5810 transitions. [2022-11-16 12:16:13,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 12:16:13,555 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 28.75) internal successors, (345), 12 states have internal predecessors, (345), 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 434 [2022-11-16 12:16:13,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:13,561 INFO L225 Difference]: With dead ends: 3535 [2022-11-16 12:16:13,561 INFO L226 Difference]: Without dead ends: 3040 [2022-11-16 12:16:13,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 930 GetRequests, 874 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 872 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=469, Invalid=2837, Unknown=0, NotChecked=0, Total=3306 [2022-11-16 12:16:13,565 INFO L413 NwaCegarLoop]: 1124 mSDtfsCounter, 12488 mSDsluCounter, 5869 mSDsCounter, 0 mSdLazyCounter, 14367 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12488 SdHoareTripleChecker+Valid, 6993 SdHoareTripleChecker+Invalid, 14505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 14367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:13,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12488 Valid, 6993 Invalid, 14505 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 14367 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-11-16 12:16:13,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2022-11-16 12:16:13,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 659. [2022-11-16 12:16:13,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 658 states have (on average 1.656534954407295) internal successors, (1090), 658 states have internal predecessors, (1090), 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) [2022-11-16 12:16:13,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1090 transitions. [2022-11-16 12:16:13,590 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1090 transitions. Word has length 434 [2022-11-16 12:16:13,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:13,591 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 1090 transitions. [2022-11-16 12:16:13,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 28.75) internal successors, (345), 12 states have internal predecessors, (345), 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) [2022-11-16 12:16:13,591 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1090 transitions. [2022-11-16 12:16:13,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2022-11-16 12:16:13,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:13,595 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:16:13,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-16 12:16:13,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 12:16:13,811 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:13,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:13,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1686125710, now seen corresponding path program 1 times [2022-11-16 12:16:13,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:13,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71524322] [2022-11-16 12:16:13,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:13,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:22,832 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:22,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:22,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71524322] [2022-11-16 12:16:22,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71524322] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:16:22,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895861969] [2022-11-16 12:16:22,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:22,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:22,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:16:22,834 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:16:22,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 12:16:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:24,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 3511 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-16 12:16:24,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:28,397 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:28,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:16:29,930 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-16 12:16:29,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895861969] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:16:29,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:16:29,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [6, 16] total 28 [2022-11-16 12:16:29,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016541404] [2022-11-16 12:16:29,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:29,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:16:29,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:29,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:16:29,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2022-11-16 12:16:29,933 INFO L87 Difference]: Start difference. First operand 659 states and 1090 transitions. Second operand has 12 states, 12 states have (on average 28.75) internal successors, (345), 12 states have internal predecessors, (345), 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) [2022-11-16 12:16:37,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:37,869 INFO L93 Difference]: Finished difference Result 3092 states and 5070 transitions. [2022-11-16 12:16:37,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-16 12:16:37,870 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 28.75) internal successors, (345), 12 states have internal predecessors, (345), 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 434 [2022-11-16 12:16:37,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:37,876 INFO L225 Difference]: With dead ends: 3092 [2022-11-16 12:16:37,876 INFO L226 Difference]: Without dead ends: 2573 [2022-11-16 12:16:37,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 936 GetRequests, 873 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=654, Invalid=3506, Unknown=0, NotChecked=0, Total=4160 [2022-11-16 12:16:37,880 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 8110 mSDsluCounter, 6476 mSDsCounter, 0 mSdLazyCounter, 8770 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8110 SdHoareTripleChecker+Valid, 7416 SdHoareTripleChecker+Invalid, 8908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 8770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:37,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8110 Valid, 7416 Invalid, 8908 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 8770 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-16 12:16:37,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2022-11-16 12:16:37,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 635. [2022-11-16 12:16:37,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.6577287066246056) internal successors, (1051), 634 states have internal predecessors, (1051), 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) [2022-11-16 12:16:37,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1051 transitions. [2022-11-16 12:16:37,901 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1051 transitions. Word has length 434 [2022-11-16 12:16:37,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:37,902 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 1051 transitions. [2022-11-16 12:16:37,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 28.75) internal successors, (345), 12 states have internal predecessors, (345), 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) [2022-11-16 12:16:37,902 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1051 transitions. [2022-11-16 12:16:37,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2022-11-16 12:16:37,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:37,906 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:16:37,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:38,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 12:16:38,130 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:38,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:38,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1929203528, now seen corresponding path program 1 times [2022-11-16 12:16:38,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:38,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168612511] [2022-11-16 12:16:38,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:38,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:46,872 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:46,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:46,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168612511] [2022-11-16 12:16:46,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168612511] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:16:46,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249895965] [2022-11-16 12:16:46,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:46,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:46,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:16:46,874 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:16:46,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 12:16:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:48,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 3514 conjuncts, 83 conjunts are in the unsatisfiable core [2022-11-16 12:16:48,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:52,384 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:52,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:16:54,132 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-16 12:16:54,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249895965] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:16:54,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:16:54,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [6, 16] total 31 [2022-11-16 12:16:54,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078234029] [2022-11-16 12:16:54,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:54,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:16:54,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:54,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:16:54,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-11-16 12:16:54,135 INFO L87 Difference]: Start difference. First operand 635 states and 1051 transitions. Second operand has 13 states, 13 states have (on average 26.76923076923077) internal successors, (348), 13 states have internal predecessors, (348), 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) [2022-11-16 12:17:06,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:06,496 INFO L93 Difference]: Finished difference Result 3571 states and 5870 transitions. [2022-11-16 12:17:06,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-16 12:17:06,497 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 26.76923076923077) internal successors, (348), 13 states have internal predecessors, (348), 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 435 [2022-11-16 12:17:06,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:06,511 INFO L225 Difference]: With dead ends: 3571 [2022-11-16 12:17:06,511 INFO L226 Difference]: Without dead ends: 3073 [2022-11-16 12:17:06,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 940 GetRequests, 878 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1087 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=569, Invalid=3463, Unknown=0, NotChecked=0, Total=4032 [2022-11-16 12:17:06,514 INFO L413 NwaCegarLoop]: 1117 mSDtfsCounter, 14087 mSDsluCounter, 6600 mSDsCounter, 0 mSdLazyCounter, 15974 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14087 SdHoareTripleChecker+Valid, 7717 SdHoareTripleChecker+Invalid, 16112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 15974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:06,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14087 Valid, 7717 Invalid, 16112 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 15974 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2022-11-16 12:17:06,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3073 states. [2022-11-16 12:17:06,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3073 to 662. [2022-11-16 12:17:06,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.6565809379727685) internal successors, (1095), 661 states have internal predecessors, (1095), 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) [2022-11-16 12:17:06,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1095 transitions. [2022-11-16 12:17:06,535 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1095 transitions. Word has length 435 [2022-11-16 12:17:06,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:06,536 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 1095 transitions. [2022-11-16 12:17:06,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 26.76923076923077) internal successors, (348), 13 states have internal predecessors, (348), 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) [2022-11-16 12:17:06,536 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1095 transitions. [2022-11-16 12:17:06,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2022-11-16 12:17:06,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:06,540 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:17:06,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-11-16 12:17:06,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:06,762 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:06,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:06,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1929263110, now seen corresponding path program 1 times [2022-11-16 12:17:06,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:06,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592779549] [2022-11-16 12:17:06,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:06,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:15,107 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:15,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:15,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592779549] [2022-11-16 12:17:15,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592779549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:17:15,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981323728] [2022-11-16 12:17:15,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:15,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:15,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:17:15,109 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:17:15,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 12:17:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:17,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 3514 conjuncts, 82 conjunts are in the unsatisfiable core [2022-11-16 12:17:17,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:17:20,512 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:20,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:17:21,889 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-16 12:17:21,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981323728] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:17:21,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:17:21,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [6, 17] total 30 [2022-11-16 12:17:21,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090308305] [2022-11-16 12:17:21,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:21,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:17:21,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:21,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:17:21,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=790, Unknown=0, NotChecked=0, Total=870 [2022-11-16 12:17:21,893 INFO L87 Difference]: Start difference. First operand 662 states and 1095 transitions. Second operand has 13 states, 13 states have (on average 26.76923076923077) internal successors, (348), 13 states have internal predecessors, (348), 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) [2022-11-16 12:17:30,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:30,905 INFO L93 Difference]: Finished difference Result 3132 states and 5136 transitions. [2022-11-16 12:17:30,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-16 12:17:30,906 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 26.76923076923077) internal successors, (348), 13 states have internal predecessors, (348), 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 435 [2022-11-16 12:17:30,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:30,908 INFO L225 Difference]: With dead ends: 3132 [2022-11-16 12:17:30,909 INFO L226 Difference]: Without dead ends: 2607 [2022-11-16 12:17:30,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 947 GetRequests, 877 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1097 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=798, Invalid=4314, Unknown=0, NotChecked=0, Total=5112 [2022-11-16 12:17:30,913 INFO L413 NwaCegarLoop]: 938 mSDtfsCounter, 8922 mSDsluCounter, 7162 mSDsCounter, 0 mSdLazyCounter, 9826 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8922 SdHoareTripleChecker+Valid, 8100 SdHoareTripleChecker+Invalid, 9964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 9826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:30,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8922 Valid, 8100 Invalid, 9964 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 9826 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-16 12:17:30,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2607 states. [2022-11-16 12:17:30,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2607 to 635. [2022-11-16 12:17:30,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.6577287066246056) internal successors, (1051), 634 states have internal predecessors, (1051), 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) [2022-11-16 12:17:30,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1051 transitions. [2022-11-16 12:17:30,944 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1051 transitions. Word has length 435 [2022-11-16 12:17:30,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:30,944 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 1051 transitions. [2022-11-16 12:17:30,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 26.76923076923077) internal successors, (348), 13 states have internal predecessors, (348), 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) [2022-11-16 12:17:30,945 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1051 transitions. [2022-11-16 12:17:30,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2022-11-16 12:17:30,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:30,948 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:17:30,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:17:31,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:31,167 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:31,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:31,167 INFO L85 PathProgramCache]: Analyzing trace with hash 520966378, now seen corresponding path program 1 times [2022-11-16 12:17:31,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:31,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960151870] [2022-11-16 12:17:31,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:31,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:41,665 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:41,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:41,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960151870] [2022-11-16 12:17:41,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960151870] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:17:41,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520513344] [2022-11-16 12:17:41,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:41,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:41,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:17:41,667 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:17:41,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 12:17:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:43,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 3517 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-16 12:17:43,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:17:48,066 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:48,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:17:50,117 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-16 12:17:50,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520513344] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:17:50,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:17:50,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [6, 17] total 33 [2022-11-16 12:17:50,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363969929] [2022-11-16 12:17:50,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:50,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:17:50,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:50,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:17:50,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2022-11-16 12:17:50,120 INFO L87 Difference]: Start difference. First operand 635 states and 1051 transitions. Second operand has 14 states, 14 states have (on average 25.071428571428573) internal successors, (351), 14 states have internal predecessors, (351), 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) [2022-11-16 12:18:04,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:18:04,217 INFO L93 Difference]: Finished difference Result 3607 states and 5930 transitions. [2022-11-16 12:18:04,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-16 12:18:04,217 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 25.071428571428573) internal successors, (351), 14 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 436 [2022-11-16 12:18:04,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:18:04,221 INFO L225 Difference]: With dead ends: 3607 [2022-11-16 12:18:04,221 INFO L226 Difference]: Without dead ends: 3106 [2022-11-16 12:18:04,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 950 GetRequests, 882 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=679, Invalid=4151, Unknown=0, NotChecked=0, Total=4830 [2022-11-16 12:18:04,223 INFO L413 NwaCegarLoop]: 1110 mSDtfsCounter, 15278 mSDsluCounter, 7406 mSDsCounter, 0 mSdLazyCounter, 18110 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15278 SdHoareTripleChecker+Valid, 8516 SdHoareTripleChecker+Invalid, 18248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 18110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:18:04,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15278 Valid, 8516 Invalid, 18248 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 18110 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2022-11-16 12:18:04,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3106 states. [2022-11-16 12:18:04,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3106 to 665. [2022-11-16 12:18:04,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 664 states have (on average 1.6566265060240963) internal successors, (1100), 664 states have internal predecessors, (1100), 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) [2022-11-16 12:18:04,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 1100 transitions. [2022-11-16 12:18:04,241 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 1100 transitions. Word has length 436 [2022-11-16 12:18:04,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:18:04,241 INFO L495 AbstractCegarLoop]: Abstraction has 665 states and 1100 transitions. [2022-11-16 12:18:04,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 25.071428571428573) internal successors, (351), 14 states have internal predecessors, (351), 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) [2022-11-16 12:18:04,242 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 1100 transitions. [2022-11-16 12:18:04,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2022-11-16 12:18:04,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:18:04,244 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:18:04,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-16 12:18:04,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-16 12:18:04,445 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:18:04,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:04,445 INFO L85 PathProgramCache]: Analyzing trace with hash 521025960, now seen corresponding path program 1 times [2022-11-16 12:18:04,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:18:04,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170604636] [2022-11-16 12:18:04,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:04,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:18:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:12,888 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 48 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:12,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:18:12,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170604636] [2022-11-16 12:18:12,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170604636] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:18:12,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345990949] [2022-11-16 12:18:12,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:12,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:18:12,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:18:12,891 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:18:12,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-16 12:18:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:15,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 3517 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-16 12:18:15,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:18:18,978 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:18,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:18:20,467 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-16 12:18:20,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345990949] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:18:20,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:18:20,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [7, 18] total 32 [2022-11-16 12:18:20,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390770957] [2022-11-16 12:18:20,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:18:20,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:18:20,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:18:20,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:18:20,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=908, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:18:20,470 INFO L87 Difference]: Start difference. First operand 665 states and 1100 transitions. Second operand has 14 states, 14 states have (on average 25.071428571428573) internal successors, (351), 14 states have internal predecessors, (351), 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) [2022-11-16 12:18:30,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:18:30,571 INFO L93 Difference]: Finished difference Result 3172 states and 5202 transitions. [2022-11-16 12:18:30,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-16 12:18:30,572 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 25.071428571428573) internal successors, (351), 14 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 436 [2022-11-16 12:18:30,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:18:30,575 INFO L225 Difference]: With dead ends: 3172 [2022-11-16 12:18:30,575 INFO L226 Difference]: Without dead ends: 2641 [2022-11-16 12:18:30,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 959 GetRequests, 882 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1259 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=955, Invalid=5207, Unknown=0, NotChecked=0, Total=6162 [2022-11-16 12:18:30,578 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 9739 mSDsluCounter, 7844 mSDsCounter, 0 mSdLazyCounter, 10910 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9739 SdHoareTripleChecker+Valid, 8780 SdHoareTripleChecker+Invalid, 11048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 10910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:18:30,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9739 Valid, 8780 Invalid, 11048 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 10910 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-16 12:18:30,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2641 states. [2022-11-16 12:18:30,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2641 to 635. [2022-11-16 12:18:30,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.6577287066246056) internal successors, (1051), 634 states have internal predecessors, (1051), 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) [2022-11-16 12:18:30,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1051 transitions. [2022-11-16 12:18:30,595 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1051 transitions. Word has length 436 [2022-11-16 12:18:30,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:18:30,596 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 1051 transitions. [2022-11-16 12:18:30,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 25.071428571428573) internal successors, (351), 14 states have internal predecessors, (351), 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) [2022-11-16 12:18:30,596 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1051 transitions. [2022-11-16 12:18:30,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-11-16 12:18:30,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:18:30,599 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:18:30,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-16 12:18:30,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:18:30,821 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:18:30,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:30,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1341651154, now seen corresponding path program 1 times [2022-11-16 12:18:30,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:18:30,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794555786] [2022-11-16 12:18:30,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:30,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:18:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:37,816 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 48 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:37,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:18:37,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794555786] [2022-11-16 12:18:37,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794555786] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:18:37,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900443775] [2022-11-16 12:18:37,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:37,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:18:37,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:18:37,818 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:18:37,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 12:18:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:40,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 3520 conjuncts, 91 conjunts are in the unsatisfiable core [2022-11-16 12:18:40,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:18:44,784 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:44,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:18:47,323 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-16 12:18:47,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900443775] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:18:47,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:18:47,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [7, 18] total 36 [2022-11-16 12:18:47,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840302241] [2022-11-16 12:18:47,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:18:47,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:18:47,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:18:47,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:18:47,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1157, Unknown=0, NotChecked=0, Total=1260 [2022-11-16 12:18:47,326 INFO L87 Difference]: Start difference. First operand 635 states and 1051 transitions. Second operand has 15 states, 15 states have (on average 23.6) internal successors, (354), 15 states have internal predecessors, (354), 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) [2022-11-16 12:19:05,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:19:05,567 INFO L93 Difference]: Finished difference Result 3643 states and 5990 transitions. [2022-11-16 12:19:05,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-16 12:19:05,568 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 23.6) internal successors, (354), 15 states have internal predecessors, (354), 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 437 [2022-11-16 12:19:05,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:19:05,573 INFO L225 Difference]: With dead ends: 3643 [2022-11-16 12:19:05,574 INFO L226 Difference]: Without dead ends: 3139 [2022-11-16 12:19:05,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 961 GetRequests, 886 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1518 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=801, Invalid=5051, Unknown=0, NotChecked=0, Total=5852 [2022-11-16 12:19:05,578 INFO L413 NwaCegarLoop]: 1103 mSDtfsCounter, 16887 mSDsluCounter, 8134 mSDsCounter, 0 mSdLazyCounter, 19728 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16887 SdHoareTripleChecker+Valid, 9237 SdHoareTripleChecker+Invalid, 19866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 19728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:19:05,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16887 Valid, 9237 Invalid, 19866 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 19728 Invalid, 0 Unknown, 0 Unchecked, 15.4s Time] [2022-11-16 12:19:05,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2022-11-16 12:19:05,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 668. [2022-11-16 12:19:05,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 667 states have (on average 1.656671664167916) internal successors, (1105), 667 states have internal predecessors, (1105), 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) [2022-11-16 12:19:05,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1105 transitions. [2022-11-16 12:19:05,659 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1105 transitions. Word has length 437 [2022-11-16 12:19:05,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:19:05,660 INFO L495 AbstractCegarLoop]: Abstraction has 668 states and 1105 transitions. [2022-11-16 12:19:05,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 23.6) internal successors, (354), 15 states have internal predecessors, (354), 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) [2022-11-16 12:19:05,660 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1105 transitions. [2022-11-16 12:19:05,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-11-16 12:19:05,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:05,664 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:19:05,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-11-16 12:19:05,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:19:05,888 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:19:05,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:05,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1341591572, now seen corresponding path program 1 times [2022-11-16 12:19:05,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:05,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794395398] [2022-11-16 12:19:05,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:05,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:16,688 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:16,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:16,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794395398] [2022-11-16 12:19:16,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794395398] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:19:16,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553769875] [2022-11-16 12:19:16,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:16,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:19:16,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:19:16,691 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:19:16,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-16 12:19:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:19,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 3520 conjuncts, 90 conjunts are in the unsatisfiable core [2022-11-16 12:19:19,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:19:23,807 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:23,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:19:25,733 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-16 12:19:25,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553769875] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:19:25,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:19:25,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [6, 19] total 34 [2022-11-16 12:19:25,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790341198] [2022-11-16 12:19:25,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:25,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:19:25,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:25,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:19:25,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1032, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 12:19:25,737 INFO L87 Difference]: Start difference. First operand 668 states and 1105 transitions. Second operand has 15 states, 15 states have (on average 23.6) internal successors, (354), 15 states have internal predecessors, (354), 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) [2022-11-16 12:19:37,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:19:37,495 INFO L93 Difference]: Finished difference Result 3212 states and 5268 transitions. [2022-11-16 12:19:37,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-16 12:19:37,496 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 23.6) internal successors, (354), 15 states have internal predecessors, (354), 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 437 [2022-11-16 12:19:37,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:19:37,499 INFO L225 Difference]: With dead ends: 3212 [2022-11-16 12:19:37,499 INFO L226 Difference]: Without dead ends: 2675 [2022-11-16 12:19:37,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 969 GetRequests, 885 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1608 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1128, Invalid=6182, Unknown=0, NotChecked=0, Total=7310 [2022-11-16 12:19:37,502 INFO L413 NwaCegarLoop]: 934 mSDtfsCounter, 10970 mSDsluCounter, 7838 mSDsCounter, 0 mSdLazyCounter, 12021 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10970 SdHoareTripleChecker+Valid, 8772 SdHoareTripleChecker+Invalid, 12159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 12021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:19:37,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10970 Valid, 8772 Invalid, 12159 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 12021 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-11-16 12:19:37,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2675 states. [2022-11-16 12:19:37,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2675 to 635. [2022-11-16 12:19:37,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.6577287066246056) internal successors, (1051), 634 states have internal predecessors, (1051), 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) [2022-11-16 12:19:37,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1051 transitions. [2022-11-16 12:19:37,518 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1051 transitions. Word has length 437 [2022-11-16 12:19:37,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:19:37,519 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 1051 transitions. [2022-11-16 12:19:37,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 23.6) internal successors, (354), 15 states have internal predecessors, (354), 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) [2022-11-16 12:19:37,519 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1051 transitions. [2022-11-16 12:19:37,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-11-16 12:19:37,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:37,522 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:19:37,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-16 12:19:37,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-16 12:19:37,735 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:19:37,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:37,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1841179898, now seen corresponding path program 1 times [2022-11-16 12:19:37,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:37,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673205430] [2022-11-16 12:19:37,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:37,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:43,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:47,358 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:47,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:47,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673205430] [2022-11-16 12:19:47,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673205430] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:19:47,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589980782] [2022-11-16 12:19:47,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:47,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:19:47,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:19:47,361 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:19:47,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-16 12:19:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:49,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 3523 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-16 12:19:49,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:19:53,922 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:53,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:19:56,114 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-16 12:19:56,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589980782] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:19:56,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:19:56,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [6, 19] total 37 [2022-11-16 12:19:56,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543505691] [2022-11-16 12:19:56,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:56,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:19:56,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:56,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:19:56,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1225, Unknown=0, NotChecked=0, Total=1332 [2022-11-16 12:19:56,117 INFO L87 Difference]: Start difference. First operand 635 states and 1051 transitions. Second operand has 16 states, 16 states have (on average 22.3125) internal successors, (357), 16 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) [2022-11-16 12:20:13,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:20:13,367 INFO L93 Difference]: Finished difference Result 3679 states and 6050 transitions. [2022-11-16 12:20:13,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-16 12:20:13,368 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 22.3125) internal successors, (357), 16 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 438 [2022-11-16 12:20:13,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:20:13,370 INFO L225 Difference]: With dead ends: 3679 [2022-11-16 12:20:13,370 INFO L226 Difference]: Without dead ends: 3172 [2022-11-16 12:20:13,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 890 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1876 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=929, Invalid=5713, Unknown=0, NotChecked=0, Total=6642 [2022-11-16 12:20:13,372 INFO L413 NwaCegarLoop]: 1096 mSDtfsCounter, 18501 mSDsluCounter, 8860 mSDsCounter, 0 mSdLazyCounter, 21348 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18501 SdHoareTripleChecker+Valid, 9956 SdHoareTripleChecker+Invalid, 21486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 21348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:20:13,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18501 Valid, 9956 Invalid, 21486 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 21348 Invalid, 0 Unknown, 0 Unchecked, 14.6s Time] [2022-11-16 12:20:13,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3172 states. [2022-11-16 12:20:13,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3172 to 671. [2022-11-16 12:20:13,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 670 states have (on average 1.6567164179104477) internal successors, (1110), 670 states have internal predecessors, (1110), 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) [2022-11-16 12:20:13,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1110 transitions. [2022-11-16 12:20:13,386 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1110 transitions. Word has length 438 [2022-11-16 12:20:13,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:20:13,387 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 1110 transitions. [2022-11-16 12:20:13,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 22.3125) internal successors, (357), 16 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) [2022-11-16 12:20:13,387 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1110 transitions. [2022-11-16 12:20:13,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-11-16 12:20:13,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:20:13,390 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:20:13,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-11-16 12:20:13,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-16 12:20:13,591 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:20:13,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:20:13,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1841120316, now seen corresponding path program 1 times [2022-11-16 12:20:13,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:20:13,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20532316] [2022-11-16 12:20:13,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:13,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:20:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:24,322 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:20:24,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:20:24,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20532316] [2022-11-16 12:20:24,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20532316] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:20:24,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874468617] [2022-11-16 12:20:24,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:24,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:20:24,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:20:24,324 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:20:24,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-16 12:20:26,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:26,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 3523 conjuncts, 94 conjunts are in the unsatisfiable core [2022-11-16 12:20:26,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:20:30,847 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:20:30,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:20:32,471 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-16 12:20:32,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874468617] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:20:32,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:20:32,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [6, 20] total 36 [2022-11-16 12:20:32,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330583438] [2022-11-16 12:20:32,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:20:32,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:20:32,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:20:32,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:20:32,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1165, Unknown=0, NotChecked=0, Total=1260 [2022-11-16 12:20:32,474 INFO L87 Difference]: Start difference. First operand 671 states and 1110 transitions. Second operand has 16 states, 16 states have (on average 22.3125) internal successors, (357), 16 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) [2022-11-16 12:20:44,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:20:44,865 INFO L93 Difference]: Finished difference Result 3252 states and 5334 transitions. [2022-11-16 12:20:44,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-16 12:20:44,866 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 22.3125) internal successors, (357), 16 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 438 [2022-11-16 12:20:44,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:20:44,868 INFO L225 Difference]: With dead ends: 3252 [2022-11-16 12:20:44,869 INFO L226 Difference]: Without dead ends: 2709 [2022-11-16 12:20:44,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 980 GetRequests, 889 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1901 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1314, Invalid=7242, Unknown=0, NotChecked=0, Total=8556 [2022-11-16 12:20:44,871 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 11388 mSDsluCounter, 9196 mSDsCounter, 0 mSdLazyCounter, 13162 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11388 SdHoareTripleChecker+Valid, 10128 SdHoareTripleChecker+Invalid, 13300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 13162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:20:44,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11388 Valid, 10128 Invalid, 13300 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 13162 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-11-16 12:20:44,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2709 states. [2022-11-16 12:20:44,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2709 to 635. [2022-11-16 12:20:44,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.6577287066246056) internal successors, (1051), 634 states have internal predecessors, (1051), 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) [2022-11-16 12:20:44,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1051 transitions. [2022-11-16 12:20:44,882 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1051 transitions. Word has length 438 [2022-11-16 12:20:44,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:20:44,883 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 1051 transitions. [2022-11-16 12:20:44,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 22.3125) internal successors, (357), 16 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) [2022-11-16 12:20:44,883 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1051 transitions. [2022-11-16 12:20:44,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2022-11-16 12:20:44,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:20:44,885 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:20:44,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-16 12:20:45,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-16 12:20:45,086 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:20:45,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:20:45,086 INFO L85 PathProgramCache]: Analyzing trace with hash 499316758, now seen corresponding path program 1 times [2022-11-16 12:20:45,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:20:45,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239241323] [2022-11-16 12:20:45,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:45,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:20:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:54,992 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:20:54,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:20:54,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239241323] [2022-11-16 12:20:54,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239241323] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:20:54,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995070920] [2022-11-16 12:20:54,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:54,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:20:54,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:20:54,994 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:20:54,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-16 12:20:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:57,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 3526 conjuncts, 99 conjunts are in the unsatisfiable core [2022-11-16 12:20:57,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:21:01,434 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:21:01,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:21:03,606 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-16 12:21:03,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995070920] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:21:03,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:21:03,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [6, 20] total 39 [2022-11-16 12:21:03,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122476101] [2022-11-16 12:21:03,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:21:03,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 12:21:03,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:21:03,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 12:21:03,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1369, Unknown=0, NotChecked=0, Total=1482 [2022-11-16 12:21:03,609 INFO L87 Difference]: Start difference. First operand 635 states and 1051 transitions. Second operand has 17 states, 17 states have (on average 21.176470588235293) internal successors, (360), 17 states have internal predecessors, (360), 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) [2022-11-16 12:21:22,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:21:22,730 INFO L93 Difference]: Finished difference Result 3715 states and 6110 transitions. [2022-11-16 12:21:22,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-16 12:21:22,730 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 21.176470588235293) internal successors, (360), 17 states have internal predecessors, (360), 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 439 [2022-11-16 12:21:22,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:21:22,733 INFO L225 Difference]: With dead ends: 3715 [2022-11-16 12:21:22,734 INFO L226 Difference]: Without dead ends: 3205 [2022-11-16 12:21:22,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 980 GetRequests, 894 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2187 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1069, Invalid=6587, Unknown=0, NotChecked=0, Total=7656 [2022-11-16 12:21:22,735 INFO L413 NwaCegarLoop]: 1089 mSDtfsCounter, 20120 mSDsluCounter, 9584 mSDsCounter, 0 mSdLazyCounter, 22970 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20120 SdHoareTripleChecker+Valid, 10673 SdHoareTripleChecker+Invalid, 23108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 22970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:21:22,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20120 Valid, 10673 Invalid, 23108 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 22970 Invalid, 0 Unknown, 0 Unchecked, 15.7s Time] [2022-11-16 12:21:22,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3205 states. [2022-11-16 12:21:22,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3205 to 674. [2022-11-16 12:21:22,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 673 states have (on average 1.6567607726597327) internal successors, (1115), 673 states have internal predecessors, (1115), 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) [2022-11-16 12:21:22,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1115 transitions. [2022-11-16 12:21:22,753 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1115 transitions. Word has length 439 [2022-11-16 12:21:22,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:21:22,753 INFO L495 AbstractCegarLoop]: Abstraction has 674 states and 1115 transitions. [2022-11-16 12:21:22,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 21.176470588235293) internal successors, (360), 17 states have internal predecessors, (360), 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) [2022-11-16 12:21:22,753 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1115 transitions. [2022-11-16 12:21:22,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2022-11-16 12:21:22,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:21:22,755 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:21:22,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-16 12:21:22,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-16 12:21:22,956 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:21:22,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:21:22,957 INFO L85 PathProgramCache]: Analyzing trace with hash 499376340, now seen corresponding path program 1 times [2022-11-16 12:21:22,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:21:22,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905409013] [2022-11-16 12:21:22,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:21:22,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:21:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:31,873 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:21:31,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:21:31,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905409013] [2022-11-16 12:21:31,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905409013] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:21:31,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891757811] [2022-11-16 12:21:31,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:21:31,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:21:31,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:21:31,875 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:21:31,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-16 12:21:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:34,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 3526 conjuncts, 98 conjunts are in the unsatisfiable core [2022-11-16 12:21:34,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:21:38,496 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:21:38,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:21:40,254 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-16 12:21:40,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891757811] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:21:40,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:21:40,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [6, 21] total 38 [2022-11-16 12:21:40,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085455783] [2022-11-16 12:21:40,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:21:40,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 12:21:40,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:21:40,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 12:21:40,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1306, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 12:21:40,256 INFO L87 Difference]: Start difference. First operand 674 states and 1115 transitions. Second operand has 17 states, 17 states have (on average 21.176470588235293) internal successors, (360), 17 states have internal predecessors, (360), 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) [2022-11-16 12:21:55,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:21:55,177 INFO L93 Difference]: Finished difference Result 3292 states and 5400 transitions. [2022-11-16 12:21:55,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-11-16 12:21:55,178 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 21.176470588235293) internal successors, (360), 17 states have internal predecessors, (360), 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 439 [2022-11-16 12:21:55,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:21:55,180 INFO L225 Difference]: With dead ends: 3292 [2022-11-16 12:21:55,180 INFO L226 Difference]: Without dead ends: 2743 [2022-11-16 12:21:55,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 991 GetRequests, 893 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2219 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1514, Invalid=8386, Unknown=0, NotChecked=0, Total=9900 [2022-11-16 12:21:55,184 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 12220 mSDsluCounter, 9866 mSDsCounter, 0 mSdLazyCounter, 14330 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12220 SdHoareTripleChecker+Valid, 10796 SdHoareTripleChecker+Invalid, 14468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 14330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:21:55,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12220 Valid, 10796 Invalid, 14468 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 14330 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2022-11-16 12:21:55,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2743 states. [2022-11-16 12:21:55,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2743 to 635. [2022-11-16 12:21:55,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.6577287066246056) internal successors, (1051), 634 states have internal predecessors, (1051), 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) [2022-11-16 12:21:55,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1051 transitions. [2022-11-16 12:21:55,199 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1051 transitions. Word has length 439 [2022-11-16 12:21:55,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:21:55,199 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 1051 transitions. [2022-11-16 12:21:55,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 21.176470588235293) internal successors, (360), 17 states have internal predecessors, (360), 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) [2022-11-16 12:21:55,199 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1051 transitions. [2022-11-16 12:21:55,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2022-11-16 12:21:55,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:21:55,202 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, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:21:55,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-16 12:21:55,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:21:55,403 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:21:55,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:21:55,403 INFO L85 PathProgramCache]: Analyzing trace with hash 253668384, now seen corresponding path program 1 times [2022-11-16 12:21:55,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:21:55,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513079687] [2022-11-16 12:21:55,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:21:55,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:22:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:22:05,609 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:22:05,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:22:05,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513079687] [2022-11-16 12:22:05,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513079687] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:22:05,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343845400] [2022-11-16 12:22:05,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:22:05,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:22:05,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:22:05,611 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:22:05,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-16 12:22:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:22:08,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 3529 conjuncts, 103 conjunts are in the unsatisfiable core [2022-11-16 12:22:08,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:22:12,627 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:22:12,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:22:15,163 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-16 12:22:15,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343845400] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:22:15,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:22:15,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [6, 21] total 41 [2022-11-16 12:22:15,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056237686] [2022-11-16 12:22:15,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:22:15,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:22:15,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:22:15,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:22:15,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1521, Unknown=0, NotChecked=0, Total=1640 [2022-11-16 12:22:15,167 INFO L87 Difference]: Start difference. First operand 635 states and 1051 transitions. Second operand has 18 states, 18 states have (on average 20.166666666666668) internal successors, (363), 18 states have internal predecessors, (363), 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) [2022-11-16 12:22:36,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:22:36,174 INFO L93 Difference]: Finished difference Result 3751 states and 6170 transitions. [2022-11-16 12:22:36,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-11-16 12:22:36,175 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 20.166666666666668) internal successors, (363), 18 states have internal predecessors, (363), 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 440 [2022-11-16 12:22:36,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:22:36,178 INFO L225 Difference]: With dead ends: 3751 [2022-11-16 12:22:36,179 INFO L226 Difference]: Without dead ends: 3238 [2022-11-16 12:22:36,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 990 GetRequests, 898 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2522 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1219, Invalid=7523, Unknown=0, NotChecked=0, Total=8742 [2022-11-16 12:22:36,182 INFO L413 NwaCegarLoop]: 1082 mSDtfsCounter, 21744 mSDsluCounter, 10306 mSDsCounter, 0 mSdLazyCounter, 24594 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21744 SdHoareTripleChecker+Valid, 11388 SdHoareTripleChecker+Invalid, 24732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 24594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:22:36,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21744 Valid, 11388 Invalid, 24732 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [138 Valid, 24594 Invalid, 0 Unknown, 0 Unchecked, 17.2s Time] [2022-11-16 12:22:36,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3238 states. [2022-11-16 12:22:36,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3238 to 677. [2022-11-16 12:22:36,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 676 states have (on average 1.6568047337278107) internal successors, (1120), 676 states have internal predecessors, (1120), 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) [2022-11-16 12:22:36,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1120 transitions. [2022-11-16 12:22:36,198 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1120 transitions. Word has length 440 [2022-11-16 12:22:36,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:22:36,198 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 1120 transitions. [2022-11-16 12:22:36,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 20.166666666666668) internal successors, (363), 18 states have internal predecessors, (363), 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) [2022-11-16 12:22:36,199 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1120 transitions. [2022-11-16 12:22:36,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2022-11-16 12:22:36,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:22:36,201 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, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:22:36,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-16 12:22:36,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-16 12:22:36,402 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:22:36,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:22:36,402 INFO L85 PathProgramCache]: Analyzing trace with hash 253727966, now seen corresponding path program 1 times [2022-11-16 12:22:36,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:22:36,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035869505] [2022-11-16 12:22:36,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:22:36,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:22:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:22:45,624 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:22:45,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:22:45,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035869505] [2022-11-16 12:22:45,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035869505] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:22:45,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605864526] [2022-11-16 12:22:45,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:22:45,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:22:45,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:22:45,627 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:22:45,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-16 12:22:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:22:48,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 3529 conjuncts, 102 conjunts are in the unsatisfiable core [2022-11-16 12:22:48,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:22:52,695 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:22:52,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:22:54,787 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-16 12:22:54,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605864526] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:22:54,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:22:54,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [6, 22] total 40 [2022-11-16 12:22:54,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934995422] [2022-11-16 12:22:54,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:22:54,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:22:54,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:22:54,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:22:54,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1455, Unknown=0, NotChecked=0, Total=1560 [2022-11-16 12:22:54,789 INFO L87 Difference]: Start difference. First operand 677 states and 1120 transitions. Second operand has 18 states, 18 states have (on average 20.166666666666668) internal successors, (363), 18 states have internal predecessors, (363), 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) [2022-11-16 12:23:11,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:11,714 INFO L93 Difference]: Finished difference Result 3332 states and 5466 transitions. [2022-11-16 12:23:11,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-16 12:23:11,715 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 20.166666666666668) internal successors, (363), 18 states have internal predecessors, (363), 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 440 [2022-11-16 12:23:11,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:11,718 INFO L225 Difference]: With dead ends: 3332 [2022-11-16 12:23:11,719 INFO L226 Difference]: Without dead ends: 2777 [2022-11-16 12:23:11,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1002 GetRequests, 897 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2562 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1728, Invalid=9614, Unknown=0, NotChecked=0, Total=11342 [2022-11-16 12:23:11,721 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 13057 mSDsluCounter, 10532 mSDsCounter, 0 mSdLazyCounter, 15526 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13057 SdHoareTripleChecker+Valid, 11460 SdHoareTripleChecker+Invalid, 15664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 15526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:11,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13057 Valid, 11460 Invalid, 15664 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 15526 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2022-11-16 12:23:11,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2777 states. [2022-11-16 12:23:11,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2777 to 635. [2022-11-16 12:23:11,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.6577287066246056) internal successors, (1051), 634 states have internal predecessors, (1051), 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) [2022-11-16 12:23:11,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1051 transitions. [2022-11-16 12:23:11,738 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1051 transitions. Word has length 440 [2022-11-16 12:23:11,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:11,738 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 1051 transitions. [2022-11-16 12:23:11,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 20.166666666666668) internal successors, (363), 18 states have internal predecessors, (363), 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) [2022-11-16 12:23:11,739 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1051 transitions. [2022-11-16 12:23:11,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2022-11-16 12:23:11,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:11,741 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, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:23:11,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:11,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f534-65a4-42da-affa-6462ab68bf64/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:11,943 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:11,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:11,944 INFO L85 PathProgramCache]: Analyzing trace with hash 2056107004, now seen corresponding path program 1 times [2022-11-16 12:23:11,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:11,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684738595] [2022-11-16 12:23:11,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:11,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat