./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e0e18d-fba0-4237-8fdd-00c0e486322f/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e0e18d-fba0-4237-8fdd-00c0e486322f/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e0e18d-fba0-4237-8fdd-00c0e486322f/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e0e18d-fba0-4237-8fdd-00c0e486322f/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e0e18d-fba0-4237-8fdd-00c0e486322f/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e0e18d-fba0-4237-8fdd-00c0e486322f/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 54dd2c42579f0de559de8ea2b74ae8f2f84f80b7530dd7d24e9994fd7ce14291 --- 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-4e7fbc6 [2022-11-23 02:46:17,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:46:17,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:46:17,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:46:17,307 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:46:17,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:46:17,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:46:17,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:46:17,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:46:17,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:46:17,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:46:17,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:46:17,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:46:17,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:46:17,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:46:17,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:46:17,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:46:17,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:46:17,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:46:17,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:46:17,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:46:17,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:46:17,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:46:17,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:46:17,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:46:17,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:46:17,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:46:17,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:46:17,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:46:17,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:46:17,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:46:17,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:46:17,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:46:17,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:46:17,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:46:17,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:46:17,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:46:17,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:46:17,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:46:17,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:46:17,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:46:17,385 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e0e18d-fba0-4237-8fdd-00c0e486322f/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 02:46:17,416 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:46:17,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:46:17,421 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:46:17,421 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:46:17,422 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:46:17,423 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:46:17,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:46:17,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:46:17,424 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:46:17,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:46:17,425 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:46:17,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:46:17,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:46:17,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:46:17,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:46:17,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:46:17,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:46:17,427 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:46:17,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:46:17,427 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:46:17,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:46:17,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:46:17,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:46:17,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:46:17,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:46:17,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:46:17,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:46:17,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:46:17,429 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:46:17,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:46:17,430 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:46:17,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:46:17,431 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:46:17,431 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:46:17,431 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_64e0e18d-fba0-4237-8fdd-00c0e486322f/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e0e18d-fba0-4237-8fdd-00c0e486322f/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54dd2c42579f0de559de8ea2b74ae8f2f84f80b7530dd7d24e9994fd7ce14291 [2022-11-23 02:46:17,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:46:17,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:46:17,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:46:17,780 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:46:17,790 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:46:17,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e0e18d-fba0-4237-8fdd-00c0e486322f/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-11-23 02:46:20,851 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:46:21,120 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:46:21,120 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e0e18d-fba0-4237-8fdd-00c0e486322f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-11-23 02:46:21,131 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e0e18d-fba0-4237-8fdd-00c0e486322f/bin/uautomizer-QkZJyEgLgS/data/9d58bd58e/7f6e38fcd09c4cafb75c1b462ab88ce8/FLAGa9571e5dc [2022-11-23 02:46:21,154 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e0e18d-fba0-4237-8fdd-00c0e486322f/bin/uautomizer-QkZJyEgLgS/data/9d58bd58e/7f6e38fcd09c4cafb75c1b462ab88ce8 [2022-11-23 02:46:21,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:46:21,159 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:46:21,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:46:21,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:46:21,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:46:21,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:46:21" (1/1) ... [2022-11-23 02:46:21,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cb30796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:21, skipping insertion in model container [2022-11-23 02:46:21,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:46:21" (1/1) ... [2022-11-23 02:46:21,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:46:21,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:46:21,465 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e0e18d-fba0-4237-8fdd-00c0e486322f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[7253,7266] [2022-11-23 02:46:21,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:46:21,549 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:46:21,598 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e0e18d-fba0-4237-8fdd-00c0e486322f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[7253,7266] [2022-11-23 02:46:21,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:46:21,687 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:46:21,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:21 WrapperNode [2022-11-23 02:46:21,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:46:21,689 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:46:21,689 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:46:21,689 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:46:21,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:21" (1/1) ... [2022-11-23 02:46:21,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:21" (1/1) ... [2022-11-23 02:46:21,786 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 675 [2022-11-23 02:46:21,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:46:21,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:46:21,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:46:21,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:46:21,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:21" (1/1) ... [2022-11-23 02:46:21,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:21" (1/1) ... [2022-11-23 02:46:21,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:21" (1/1) ... [2022-11-23 02:46:21,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:21" (1/1) ... [2022-11-23 02:46:21,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:21" (1/1) ... [2022-11-23 02:46:21,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:21" (1/1) ... [2022-11-23 02:46:21,820 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:21" (1/1) ... [2022-11-23 02:46:21,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:21" (1/1) ... [2022-11-23 02:46:21,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:46:21,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:46:21,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:46:21,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:46:21,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:21" (1/1) ... [2022-11-23 02:46:21,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:46:21,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e0e18d-fba0-4237-8fdd-00c0e486322f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:46:21,862 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e0e18d-fba0-4237-8fdd-00c0e486322f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:46:21,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e0e18d-fba0-4237-8fdd-00c0e486322f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:46:21,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:46:21,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:46:21,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:46:21,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:46:22,046 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:46:22,048 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:46:22,874 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:46:22,883 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:46:22,883 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 02:46:22,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:46:22 BoogieIcfgContainer [2022-11-23 02:46:22,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:46:22,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:46:22,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:46:22,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:46:22,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:46:21" (1/3) ... [2022-11-23 02:46:22,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28691dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:46:22, skipping insertion in model container [2022-11-23 02:46:22,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:21" (2/3) ... [2022-11-23 02:46:22,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28691dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:46:22, skipping insertion in model container [2022-11-23 02:46:22,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:46:22" (3/3) ... [2022-11-23 02:46:22,894 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-11-23 02:46:22,915 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:46:22,915 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 02:46:22,972 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:46:22,979 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;@325b017a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:46:22,979 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 02:46:22,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 178 states have (on average 1.7191011235955056) internal successors, (306), 179 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:22,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-23 02:46:22,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:46:22,994 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] [2022-11-23 02:46:22,994 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:46:23,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:46:23,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1338980314, now seen corresponding path program 1 times [2022-11-23 02:46:23,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:46:23,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137859056] [2022-11-23 02:46:23,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:46:23,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:46:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:46:23,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:46:23,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:46:23,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137859056] [2022-11-23 02:46:23,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137859056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:46:23,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:46:23,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:46:23,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245904506] [2022-11-23 02:46:23,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:46:23,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:46:23,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:46:23,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:46:23,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:46:23,781 INFO L87 Difference]: Start difference. First operand has 180 states, 178 states have (on average 1.7191011235955056) internal successors, (306), 179 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:24,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:46:24,102 INFO L93 Difference]: Finished difference Result 640 states and 1036 transitions. [2022-11-23 02:46:24,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:46:24,106 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-11-23 02:46:24,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:46:24,133 INFO L225 Difference]: With dead ends: 640 [2022-11-23 02:46:24,135 INFO L226 Difference]: Without dead ends: 541 [2022-11-23 02:46:24,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:46:24,146 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 1605 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:46:24,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 1129 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:46:24,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-11-23 02:46:24,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 275. [2022-11-23 02:46:24,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.5036496350364963) internal successors, (412), 274 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:24,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 412 transitions. [2022-11-23 02:46:24,259 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 412 transitions. Word has length 65 [2022-11-23 02:46:24,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:46:24,260 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 412 transitions. [2022-11-23 02:46:24,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:24,261 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 412 transitions. [2022-11-23 02:46:24,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-23 02:46:24,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:46:24,264 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:46:24,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:46:24,264 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:46:24,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:46:24,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1162317624, now seen corresponding path program 1 times [2022-11-23 02:46:24,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:46:24,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002013890] [2022-11-23 02:46:24,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:46:24,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:46:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:46:24,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:46:24,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:46:24,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002013890] [2022-11-23 02:46:24,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002013890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:46:24,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:46:24,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:46:24,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494790510] [2022-11-23 02:46:24,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:46:24,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:46:24,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:46:24,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:46:24,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:46:24,499 INFO L87 Difference]: Start difference. First operand 275 states and 412 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:24,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:46:24,912 INFO L93 Difference]: Finished difference Result 1013 states and 1556 transitions. [2022-11-23 02:46:24,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:46:24,913 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-23 02:46:24,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:46:24,917 INFO L225 Difference]: With dead ends: 1013 [2022-11-23 02:46:24,918 INFO L226 Difference]: Without dead ends: 801 [2022-11-23 02:46:24,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:46:24,929 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 778 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:46:24,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 895 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 02:46:24,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-11-23 02:46:25,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 795. [2022-11-23 02:46:25,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 794 states have (on average 1.5251889168765742) internal successors, (1211), 794 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:25,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1211 transitions. [2022-11-23 02:46:25,080 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1211 transitions. Word has length 66 [2022-11-23 02:46:25,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:46:25,081 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1211 transitions. [2022-11-23 02:46:25,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:25,082 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1211 transitions. [2022-11-23 02:46:25,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-23 02:46:25,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:46:25,093 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] [2022-11-23 02:46:25,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:46:25,095 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:46:25,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:46:25,096 INFO L85 PathProgramCache]: Analyzing trace with hash -314049844, now seen corresponding path program 1 times [2022-11-23 02:46:25,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:46:25,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689393879] [2022-11-23 02:46:25,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:46:25,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:46:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:46:25,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:46:25,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:46:25,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689393879] [2022-11-23 02:46:25,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689393879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:46:25,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:46:25,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:46:25,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197177218] [2022-11-23 02:46:25,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:46:25,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:46:25,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:46:25,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:46:25,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:46:25,289 INFO L87 Difference]: Start difference. First operand 795 states and 1211 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:25,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:46:25,833 INFO L93 Difference]: Finished difference Result 2127 states and 3281 transitions. [2022-11-23 02:46:25,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:46:25,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-11-23 02:46:25,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:46:25,840 INFO L225 Difference]: With dead ends: 2127 [2022-11-23 02:46:25,840 INFO L226 Difference]: Without dead ends: 1383 [2022-11-23 02:46:25,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:46:25,843 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 998 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 02:46:25,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 244 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 02:46:25,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2022-11-23 02:46:26,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1381. [2022-11-23 02:46:26,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1380 states have (on average 1.5333333333333334) internal successors, (2116), 1380 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:26,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 2116 transitions. [2022-11-23 02:46:26,085 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 2116 transitions. Word has length 67 [2022-11-23 02:46:26,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:46:26,085 INFO L495 AbstractCegarLoop]: Abstraction has 1381 states and 2116 transitions. [2022-11-23 02:46:26,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:26,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 2116 transitions. [2022-11-23 02:46:26,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-23 02:46:26,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:46:26,088 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] [2022-11-23 02:46:26,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 02:46:26,088 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:46:26,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:46:26,089 INFO L85 PathProgramCache]: Analyzing trace with hash -301249106, now seen corresponding path program 1 times [2022-11-23 02:46:26,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:46:26,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668136908] [2022-11-23 02:46:26,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:46:26,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:46:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:46:26,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:46:26,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:46:26,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668136908] [2022-11-23 02:46:26,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668136908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:46:26,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:46:26,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:46:26,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687937755] [2022-11-23 02:46:26,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:46:26,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:46:26,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:46:26,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:46:26,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:46:26,224 INFO L87 Difference]: Start difference. First operand 1381 states and 2116 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:26,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:46:26,949 INFO L93 Difference]: Finished difference Result 3713 states and 5742 transitions. [2022-11-23 02:46:26,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:46:26,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-11-23 02:46:26,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:46:26,960 INFO L225 Difference]: With dead ends: 3713 [2022-11-23 02:46:26,962 INFO L226 Difference]: Without dead ends: 2433 [2022-11-23 02:46:26,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:46:26,975 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 924 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:46:26,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 250 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 02:46:26,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2433 states. [2022-11-23 02:46:27,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2433 to 2431. [2022-11-23 02:46:27,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2431 states, 2430 states have (on average 1.536625514403292) internal successors, (3734), 2430 states have internal predecessors, (3734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:27,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 3734 transitions. [2022-11-23 02:46:27,379 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 3734 transitions. Word has length 67 [2022-11-23 02:46:27,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:46:27,379 INFO L495 AbstractCegarLoop]: Abstraction has 2431 states and 3734 transitions. [2022-11-23 02:46:27,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:27,380 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 3734 transitions. [2022-11-23 02:46:27,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-23 02:46:27,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:46:27,382 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] [2022-11-23 02:46:27,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 02:46:27,382 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:46:27,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:46:27,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1722644829, now seen corresponding path program 1 times [2022-11-23 02:46:27,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:46:27,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095245616] [2022-11-23 02:46:27,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:46:27,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:46:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:46:27,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:46:27,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:46:27,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095245616] [2022-11-23 02:46:27,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095245616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:46:27,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:46:27,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:46:27,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296385180] [2022-11-23 02:46:27,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:46:27,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:46:27,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:46:27,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:46:27,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:46:27,541 INFO L87 Difference]: Start difference. First operand 2431 states and 3734 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:28,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:46:28,397 INFO L93 Difference]: Finished difference Result 6934 states and 10705 transitions. [2022-11-23 02:46:28,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:46:28,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-11-23 02:46:28,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:46:28,417 INFO L225 Difference]: With dead ends: 6934 [2022-11-23 02:46:28,417 INFO L226 Difference]: Without dead ends: 4577 [2022-11-23 02:46:28,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:46:28,424 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 950 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:46:28,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 248 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 02:46:28,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4577 states. [2022-11-23 02:46:29,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4577 to 4575. [2022-11-23 02:46:29,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4575 states, 4574 states have (on average 1.5343244425010931) internal successors, (7018), 4574 states have internal predecessors, (7018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:29,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4575 states to 4575 states and 7018 transitions. [2022-11-23 02:46:29,116 INFO L78 Accepts]: Start accepts. Automaton has 4575 states and 7018 transitions. Word has length 67 [2022-11-23 02:46:29,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:46:29,121 INFO L495 AbstractCegarLoop]: Abstraction has 4575 states and 7018 transitions. [2022-11-23 02:46:29,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:29,121 INFO L276 IsEmpty]: Start isEmpty. Operand 4575 states and 7018 transitions. [2022-11-23 02:46:29,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-23 02:46:29,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:46:29,123 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] [2022-11-23 02:46:29,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 02:46:29,124 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:46:29,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:46:29,125 INFO L85 PathProgramCache]: Analyzing trace with hash -262843909, now seen corresponding path program 1 times [2022-11-23 02:46:29,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:46:29,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461451126] [2022-11-23 02:46:29,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:46:29,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:46:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:46:29,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:46:29,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:46:29,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461451126] [2022-11-23 02:46:29,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461451126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:46:29,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:46:29,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:46:29,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197894152] [2022-11-23 02:46:29,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:46:29,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:46:29,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:46:29,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:46:29,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:46:29,233 INFO L87 Difference]: Start difference. First operand 4575 states and 7018 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:30,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:46:30,832 INFO L93 Difference]: Finished difference Result 13473 states and 20725 transitions. [2022-11-23 02:46:30,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:46:30,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-11-23 02:46:30,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:46:30,871 INFO L225 Difference]: With dead ends: 13473 [2022-11-23 02:46:30,871 INFO L226 Difference]: Without dead ends: 8933 [2022-11-23 02:46:30,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:46:30,879 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 1010 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:46:30,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 242 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 02:46:30,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8933 states. [2022-11-23 02:46:32,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8933 to 8931. [2022-11-23 02:46:32,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8931 states, 8930 states have (on average 1.5264277715565508) internal successors, (13631), 8930 states have internal predecessors, (13631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:32,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8931 states to 8931 states and 13631 transitions. [2022-11-23 02:46:32,085 INFO L78 Accepts]: Start accepts. Automaton has 8931 states and 13631 transitions. Word has length 67 [2022-11-23 02:46:32,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:46:32,085 INFO L495 AbstractCegarLoop]: Abstraction has 8931 states and 13631 transitions. [2022-11-23 02:46:32,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:32,086 INFO L276 IsEmpty]: Start isEmpty. Operand 8931 states and 13631 transitions. [2022-11-23 02:46:32,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-23 02:46:32,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:46:32,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:46:32,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 02:46:32,089 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:46:32,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:46:32,090 INFO L85 PathProgramCache]: Analyzing trace with hash -767077788, now seen corresponding path program 1 times [2022-11-23 02:46:32,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:46:32,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098452545] [2022-11-23 02:46:32,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:46:32,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:46:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:46:32,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:46:32,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:46:32,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098452545] [2022-11-23 02:46:32,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098452545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:46:32,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:46:32,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 02:46:32,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659273817] [2022-11-23 02:46:32,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:46:32,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:46:32,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:46:32,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:46:32,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:46:32,398 INFO L87 Difference]: Start difference. First operand 8931 states and 13631 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:34,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:46:34,865 INFO L93 Difference]: Finished difference Result 17509 states and 26656 transitions. [2022-11-23 02:46:34,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:46:34,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-11-23 02:46:34,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:46:34,925 INFO L225 Difference]: With dead ends: 17509 [2022-11-23 02:46:34,925 INFO L226 Difference]: Without dead ends: 17507 [2022-11-23 02:46:34,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:46:34,931 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 244 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:46:34,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 983 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:46:34,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17507 states. [2022-11-23 02:46:36,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17507 to 9187. [2022-11-23 02:46:36,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9187 states, 9186 states have (on average 1.5117570215545395) internal successors, (13887), 9186 states have internal predecessors, (13887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:36,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9187 states to 9187 states and 13887 transitions. [2022-11-23 02:46:36,300 INFO L78 Accepts]: Start accepts. Automaton has 9187 states and 13887 transitions. Word has length 68 [2022-11-23 02:46:36,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:46:36,301 INFO L495 AbstractCegarLoop]: Abstraction has 9187 states and 13887 transitions. [2022-11-23 02:46:36,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:36,301 INFO L276 IsEmpty]: Start isEmpty. Operand 9187 states and 13887 transitions. [2022-11-23 02:46:36,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-23 02:46:36,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:46:36,304 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] [2022-11-23 02:46:36,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 02:46:36,304 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:46:36,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:46:36,305 INFO L85 PathProgramCache]: Analyzing trace with hash -2026121149, now seen corresponding path program 1 times [2022-11-23 02:46:36,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:46:36,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75248160] [2022-11-23 02:46:36,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:46:36,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:46:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:46:36,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:46:36,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:46:36,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75248160] [2022-11-23 02:46:36,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75248160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:46:36,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:46:36,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 02:46:36,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275568815] [2022-11-23 02:46:36,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:46:36,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 02:46:36,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:46:36,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 02:46:36,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:46:36,610 INFO L87 Difference]: Start difference. First operand 9187 states and 13887 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:43,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:46:43,101 INFO L93 Difference]: Finished difference Result 41174 states and 61720 transitions. [2022-11-23 02:46:43,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-23 02:46:43,102 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-11-23 02:46:43,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:46:43,204 INFO L225 Difference]: With dead ends: 41174 [2022-11-23 02:46:43,204 INFO L226 Difference]: Without dead ends: 35360 [2022-11-23 02:46:43,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2022-11-23 02:46:43,218 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 1728 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1728 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 02:46:43,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1728 Valid, 1140 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 02:46:43,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35360 states. [2022-11-23 02:46:45,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35360 to 9320. [2022-11-23 02:46:45,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9320 states, 9319 states have (on average 1.5089601888614659) internal successors, (14062), 9319 states have internal predecessors, (14062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:45,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 14062 transitions. [2022-11-23 02:46:45,733 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 14062 transitions. Word has length 69 [2022-11-23 02:46:45,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:46:45,734 INFO L495 AbstractCegarLoop]: Abstraction has 9320 states and 14062 transitions. [2022-11-23 02:46:45,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:45,735 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 14062 transitions. [2022-11-23 02:46:45,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-23 02:46:45,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:46:45,739 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] [2022-11-23 02:46:45,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 02:46:45,746 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:46:45,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:46:45,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1463216125, now seen corresponding path program 1 times [2022-11-23 02:46:45,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:46:45,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235165832] [2022-11-23 02:46:45,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:46:45,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:46:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:46:46,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:46:46,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:46:46,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235165832] [2022-11-23 02:46:46,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235165832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:46:46,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:46:46,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 02:46:46,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832009699] [2022-11-23 02:46:46,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:46:46,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 02:46:46,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:46:46,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 02:46:46,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:46:46,155 INFO L87 Difference]: Start difference. First operand 9320 states and 14062 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:51,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:46:51,673 INFO L93 Difference]: Finished difference Result 24815 states and 37194 transitions. [2022-11-23 02:46:51,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-23 02:46:51,674 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-11-23 02:46:51,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:46:51,732 INFO L225 Difference]: With dead ends: 24815 [2022-11-23 02:46:51,733 INFO L226 Difference]: Without dead ends: 23508 [2022-11-23 02:46:51,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2022-11-23 02:46:51,740 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 2059 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2059 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 02:46:51,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2059 Valid, 1297 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 02:46:51,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23508 states. [2022-11-23 02:46:53,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23508 to 9320. [2022-11-23 02:46:53,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9320 states, 9319 states have (on average 1.5087455735593949) internal successors, (14060), 9319 states have internal predecessors, (14060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:53,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 14060 transitions. [2022-11-23 02:46:53,476 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 14060 transitions. Word has length 69 [2022-11-23 02:46:53,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:46:53,476 INFO L495 AbstractCegarLoop]: Abstraction has 9320 states and 14060 transitions. [2022-11-23 02:46:53,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:46:53,477 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 14060 transitions. [2022-11-23 02:46:53,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-23 02:46:53,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:46:53,480 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] [2022-11-23 02:46:53,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 02:46:53,480 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:46:53,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:46:53,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1395774499, now seen corresponding path program 1 times [2022-11-23 02:46:53,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:46:53,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605924407] [2022-11-23 02:46:53,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:46:53,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:46:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:46:53,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:46:53,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:46:53,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605924407] [2022-11-23 02:46:53,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605924407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:46:53,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:46:53,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 02:46:53,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944796685] [2022-11-23 02:46:53,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:46:53,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 02:46:53,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:46:53,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 02:46:53,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:46:53,756 INFO L87 Difference]: Start difference. First operand 9320 states and 14060 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:00,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:47:00,643 INFO L93 Difference]: Finished difference Result 33278 states and 49851 transitions. [2022-11-23 02:47:00,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-23 02:47:00,644 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-11-23 02:47:00,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:47:00,717 INFO L225 Difference]: With dead ends: 33278 [2022-11-23 02:47:00,717 INFO L226 Difference]: Without dead ends: 29701 [2022-11-23 02:47:00,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2022-11-23 02:47:00,727 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 2217 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2217 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 02:47:00,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2217 Valid, 1251 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 02:47:00,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29701 states. [2022-11-23 02:47:02,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29701 to 9543. [2022-11-23 02:47:02,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9543 states, 9542 states have (on average 1.5048207922867323) internal successors, (14359), 9542 states have internal predecessors, (14359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:02,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9543 states to 9543 states and 14359 transitions. [2022-11-23 02:47:02,988 INFO L78 Accepts]: Start accepts. Automaton has 9543 states and 14359 transitions. Word has length 69 [2022-11-23 02:47:02,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:47:02,989 INFO L495 AbstractCegarLoop]: Abstraction has 9543 states and 14359 transitions. [2022-11-23 02:47:02,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:02,989 INFO L276 IsEmpty]: Start isEmpty. Operand 9543 states and 14359 transitions. [2022-11-23 02:47:02,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-23 02:47:02,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:47:02,994 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] [2022-11-23 02:47:02,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 02:47:02,994 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:47:02,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:47:02,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1390992285, now seen corresponding path program 1 times [2022-11-23 02:47:02,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:47:02,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838400503] [2022-11-23 02:47:02,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:47:02,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:47:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:47:03,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:47:03,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:47:03,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838400503] [2022-11-23 02:47:03,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838400503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:47:03,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:47:03,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:47:03,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70329847] [2022-11-23 02:47:03,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:47:03,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:47:03,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:47:03,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:47:03,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:47:03,148 INFO L87 Difference]: Start difference. First operand 9543 states and 14359 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:06,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:47:06,867 INFO L93 Difference]: Finished difference Result 25387 states and 38245 transitions. [2022-11-23 02:47:06,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:47:06,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-11-23 02:47:06,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:47:06,904 INFO L225 Difference]: With dead ends: 25387 [2022-11-23 02:47:06,904 INFO L226 Difference]: Without dead ends: 16809 [2022-11-23 02:47:06,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:47:06,917 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 248 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:47:06,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 610 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:47:06,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16809 states. [2022-11-23 02:47:10,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16809 to 16807. [2022-11-23 02:47:10,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16807 states, 16806 states have (on average 1.4934547185528977) internal successors, (25099), 16806 states have internal predecessors, (25099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:10,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16807 states to 16807 states and 25099 transitions. [2022-11-23 02:47:10,476 INFO L78 Accepts]: Start accepts. Automaton has 16807 states and 25099 transitions. Word has length 69 [2022-11-23 02:47:10,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:47:10,477 INFO L495 AbstractCegarLoop]: Abstraction has 16807 states and 25099 transitions. [2022-11-23 02:47:10,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:10,477 INFO L276 IsEmpty]: Start isEmpty. Operand 16807 states and 25099 transitions. [2022-11-23 02:47:10,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-23 02:47:10,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:47:10,479 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] [2022-11-23 02:47:10,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 02:47:10,480 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:47:10,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:47:10,480 INFO L85 PathProgramCache]: Analyzing trace with hash -304742627, now seen corresponding path program 1 times [2022-11-23 02:47:10,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:47:10,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247267904] [2022-11-23 02:47:10,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:47:10,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:47:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:47:10,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:47:10,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:47:10,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247267904] [2022-11-23 02:47:10,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247267904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:47:10,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:47:10,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:47:10,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62459301] [2022-11-23 02:47:10,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:47:10,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:47:10,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:47:10,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:47:10,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:47:10,542 INFO L87 Difference]: Start difference. First operand 16807 states and 25099 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:15,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:47:15,758 INFO L93 Difference]: Finished difference Result 29267 states and 43716 transitions. [2022-11-23 02:47:15,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:47:15,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-11-23 02:47:15,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:47:15,798 INFO L225 Difference]: With dead ends: 29267 [2022-11-23 02:47:15,798 INFO L226 Difference]: Without dead ends: 20237 [2022-11-23 02:47:15,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:47:15,812 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 155 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:47:15,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 480 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:47:15,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20237 states. [2022-11-23 02:47:20,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20237 to 20003. [2022-11-23 02:47:20,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20003 states, 20002 states have (on average 1.470952904709529) internal successors, (29422), 20002 states have internal predecessors, (29422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:20,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20003 states to 20003 states and 29422 transitions. [2022-11-23 02:47:20,336 INFO L78 Accepts]: Start accepts. Automaton has 20003 states and 29422 transitions. Word has length 70 [2022-11-23 02:47:20,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:47:20,336 INFO L495 AbstractCegarLoop]: Abstraction has 20003 states and 29422 transitions. [2022-11-23 02:47:20,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:20,336 INFO L276 IsEmpty]: Start isEmpty. Operand 20003 states and 29422 transitions. [2022-11-23 02:47:20,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-23 02:47:20,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:47:20,339 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] [2022-11-23 02:47:20,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 02:47:20,340 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:47:20,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:47:20,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1498705795, now seen corresponding path program 1 times [2022-11-23 02:47:20,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:47:20,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580690537] [2022-11-23 02:47:20,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:47:20,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:47:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:47:20,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:47:20,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:47:20,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580690537] [2022-11-23 02:47:20,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580690537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:47:20,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:47:20,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:47:20,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333617978] [2022-11-23 02:47:20,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:47:20,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:47:20,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:47:20,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:47:20,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:47:20,395 INFO L87 Difference]: Start difference. First operand 20003 states and 29422 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:29,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:47:29,007 INFO L93 Difference]: Finished difference Result 50572 states and 74466 transitions. [2022-11-23 02:47:29,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:47:29,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-11-23 02:47:29,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:47:29,054 INFO L225 Difference]: With dead ends: 50572 [2022-11-23 02:47:29,054 INFO L226 Difference]: Without dead ends: 33966 [2022-11-23 02:47:29,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:47:29,068 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 172 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:47:29,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 554 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:47:29,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33966 states. [2022-11-23 02:47:38,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33966 to 33900. [2022-11-23 02:47:38,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33900 states, 33899 states have (on average 1.4599250715360335) internal successors, (49490), 33899 states have internal predecessors, (49490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:38,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33900 states to 33900 states and 49490 transitions. [2022-11-23 02:47:38,844 INFO L78 Accepts]: Start accepts. Automaton has 33900 states and 49490 transitions. Word has length 70 [2022-11-23 02:47:38,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:47:38,845 INFO L495 AbstractCegarLoop]: Abstraction has 33900 states and 49490 transitions. [2022-11-23 02:47:38,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:38,845 INFO L276 IsEmpty]: Start isEmpty. Operand 33900 states and 49490 transitions. [2022-11-23 02:47:38,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-23 02:47:38,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:47:38,850 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] [2022-11-23 02:47:38,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 02:47:38,850 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:47:38,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:47:38,851 INFO L85 PathProgramCache]: Analyzing trace with hash 188326364, now seen corresponding path program 1 times [2022-11-23 02:47:38,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:47:38,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713382459] [2022-11-23 02:47:38,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:47:38,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:47:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:47:38,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:47:38,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:47:38,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713382459] [2022-11-23 02:47:38,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713382459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:47:38,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:47:38,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:47:38,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908930742] [2022-11-23 02:47:38,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:47:38,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:47:38,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:47:38,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:47:38,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:47:38,904 INFO L87 Difference]: Start difference. First operand 33900 states and 49490 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:48,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:47:48,011 INFO L93 Difference]: Finished difference Result 46865 states and 68097 transitions. [2022-11-23 02:47:48,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:47:48,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-11-23 02:47:48,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:47:48,065 INFO L225 Difference]: With dead ends: 46865 [2022-11-23 02:47:48,065 INFO L226 Difference]: Without dead ends: 34649 [2022-11-23 02:47:48,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:47:48,078 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 143 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:47:48,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 466 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:47:48,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34649 states. [2022-11-23 02:47:57,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34649 to 31139. [2022-11-23 02:47:57,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31139 states, 31138 states have (on average 1.4313700301881944) internal successors, (44570), 31138 states have internal predecessors, (44570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:57,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31139 states to 31139 states and 44570 transitions. [2022-11-23 02:47:57,921 INFO L78 Accepts]: Start accepts. Automaton has 31139 states and 44570 transitions. Word has length 70 [2022-11-23 02:47:57,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:47:57,922 INFO L495 AbstractCegarLoop]: Abstraction has 31139 states and 44570 transitions. [2022-11-23 02:47:57,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:57,922 INFO L276 IsEmpty]: Start isEmpty. Operand 31139 states and 44570 transitions. [2022-11-23 02:47:57,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-23 02:47:57,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:47:57,928 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] [2022-11-23 02:47:57,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 02:47:57,929 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:47:57,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:47:57,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1741290372, now seen corresponding path program 1 times [2022-11-23 02:47:57,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:47:57,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880327530] [2022-11-23 02:47:57,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:47:57,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:47:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:47:57,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:47:57,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:47:57,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880327530] [2022-11-23 02:47:57,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880327530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:47:57,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:47:57,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:47:57,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778275065] [2022-11-23 02:47:57,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:47:57,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:47:57,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:47:57,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:47:57,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:47:57,996 INFO L87 Difference]: Start difference. First operand 31139 states and 44570 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:48:08,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:48:08,623 INFO L93 Difference]: Finished difference Result 61381 states and 87534 transitions. [2022-11-23 02:48:08,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:48:08,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-11-23 02:48:08,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:48:08,678 INFO L225 Difference]: With dead ends: 61381 [2022-11-23 02:48:08,678 INFO L226 Difference]: Without dead ends: 34249 [2022-11-23 02:48:08,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:48:08,696 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 163 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:48:08,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 488 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:48:08,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34249 states.