./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/pr4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-tiling/pr4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro --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 14a75e050103eb09182e049a798a738dec478e3acaa4fb01ae8649b715b8362f --- 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-8393723 [2022-11-18 20:11:31,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:11:31,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:11:31,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:11:31,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:11:31,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:11:31,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:11:31,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:11:31,472 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:11:31,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:11:31,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:11:31,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:11:31,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:11:31,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:11:31,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:11:31,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:11:31,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:11:31,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:11:31,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:11:31,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:11:31,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:11:31,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:11:31,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:11:31,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:11:31,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:11:31,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:11:31,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:11:31,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:11:31,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:11:31,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:11:31,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:11:31,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:11:31,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:11:31,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:11:31,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:11:31,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:11:31,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:11:31,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:11:31,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:11:31,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:11:31,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:11:31,541 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:11:31,586 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:11:31,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:11:31,587 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:11:31,587 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:11:31,588 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:11:31,588 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:11:31,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:11:31,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:11:31,589 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:11:31,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:11:31,590 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:11:31,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:11:31,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:11:31,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:11:31,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:11:31,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:11:31,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:11:31,591 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:11:31,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:11:31,592 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:11:31,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:11:31,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:11:31,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:11:31,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:11:31,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:11:31,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:11:31,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:11:31,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:11:31,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:11:31,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:11:31,595 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:11:31,595 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:11:31,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:11:31,596 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14a75e050103eb09182e049a798a738dec478e3acaa4fb01ae8649b715b8362f [2022-11-18 20:11:31,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:11:31,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:11:31,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:11:31,941 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:11:31,942 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:11:31,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/array-tiling/pr4.c [2022-11-18 20:11:32,025 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/data/881ff7ee4/db44152f15a8478ca9b13e19d31e2b56/FLAG430cad9f8 [2022-11-18 20:11:32,546 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:11:32,547 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/sv-benchmarks/c/array-tiling/pr4.c [2022-11-18 20:11:32,554 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/data/881ff7ee4/db44152f15a8478ca9b13e19d31e2b56/FLAG430cad9f8 [2022-11-18 20:11:32,896 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/data/881ff7ee4/db44152f15a8478ca9b13e19d31e2b56 [2022-11-18 20:11:32,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:11:32,900 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:11:32,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:11:32,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:11:32,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:11:32,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:11:32" (1/1) ... [2022-11-18 20:11:32,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e2646f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:32, skipping insertion in model container [2022-11-18 20:11:32,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:11:32" (1/1) ... [2022-11-18 20:11:32,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:11:32,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:11:33,091 WARN L234 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_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/sv-benchmarks/c/array-tiling/pr4.c[394,407] [2022-11-18 20:11:33,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:11:33,153 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:11:33,169 WARN L234 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_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/sv-benchmarks/c/array-tiling/pr4.c[394,407] [2022-11-18 20:11:33,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:11:33,204 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:11:33,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:33 WrapperNode [2022-11-18 20:11:33,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:11:33,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:11:33,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:11:33,206 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:11:33,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:33" (1/1) ... [2022-11-18 20:11:33,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:33" (1/1) ... [2022-11-18 20:11:33,247 INFO L138 Inliner]: procedures = 15, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 83 [2022-11-18 20:11:33,248 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:11:33,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:11:33,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:11:33,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:11:33,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:33" (1/1) ... [2022-11-18 20:11:33,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:33" (1/1) ... [2022-11-18 20:11:33,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:33" (1/1) ... [2022-11-18 20:11:33,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:33" (1/1) ... [2022-11-18 20:11:33,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:33" (1/1) ... [2022-11-18 20:11:33,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:33" (1/1) ... [2022-11-18 20:11:33,276 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:33" (1/1) ... [2022-11-18 20:11:33,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:33" (1/1) ... [2022-11-18 20:11:33,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:11:33,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:11:33,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:11:33,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:11:33,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:33" (1/1) ... [2022-11-18 20:11:33,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:11:33,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:11:33,322 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:11:33,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:11:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:11:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:11:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:11:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:11:33,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:11:33,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:11:33,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:11:33,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:11:33,470 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:11:33,472 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:11:33,712 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:11:33,717 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:11:33,718 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 20:11:33,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:11:33 BoogieIcfgContainer [2022-11-18 20:11:33,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:11:33,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:11:33,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:11:33,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:11:33,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:11:32" (1/3) ... [2022-11-18 20:11:33,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f58af83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:11:33, skipping insertion in model container [2022-11-18 20:11:33,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:33" (2/3) ... [2022-11-18 20:11:33,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f58af83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:11:33, skipping insertion in model container [2022-11-18 20:11:33,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:11:33" (3/3) ... [2022-11-18 20:11:33,742 INFO L112 eAbstractionObserver]: Analyzing ICFG pr4.c [2022-11-18 20:11:33,762 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:11:33,762 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:11:33,876 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:11:33,891 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;@2c57b969, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:11:33,892 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:11:33,896 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:33,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 20:11:33,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:33,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:33,909 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:11:33,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:33,922 INFO L85 PathProgramCache]: Analyzing trace with hash -260661418, now seen corresponding path program 1 times [2022-11-18 20:11:33,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:33,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641220255] [2022-11-18 20:11:33,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:33,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:34,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:34,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:34,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641220255] [2022-11-18 20:11:34,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641220255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:11:34,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:11:34,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:11:34,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917782167] [2022-11-18 20:11:34,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:11:34,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:11:34,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:34,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:11:34,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:11:34,246 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 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 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:34,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:34,281 INFO L93 Difference]: Finished difference Result 47 states and 68 transitions. [2022-11-18 20:11:34,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:11:34,285 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-11-18 20:11:34,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:34,296 INFO L225 Difference]: With dead ends: 47 [2022-11-18 20:11:34,296 INFO L226 Difference]: Without dead ends: 21 [2022-11-18 20:11:34,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:11:34,310 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:34,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:11:34,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-18 20:11:34,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-18 20:11:34,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:34,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2022-11-18 20:11:34,363 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 13 [2022-11-18 20:11:34,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:34,364 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2022-11-18 20:11:34,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:34,366 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2022-11-18 20:11:34,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 20:11:34,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:34,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:34,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:11:34,369 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:11:34,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:34,372 INFO L85 PathProgramCache]: Analyzing trace with hash 451593979, now seen corresponding path program 1 times [2022-11-18 20:11:34,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:34,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512661078] [2022-11-18 20:11:34,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:34,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:34,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:34,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:34,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512661078] [2022-11-18 20:11:34,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512661078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:11:34,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:11:34,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:11:34,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890636116] [2022-11-18 20:11:34,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:11:34,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:11:34,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:34,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:11:34,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:11:34,587 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:34,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:34,627 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2022-11-18 20:11:34,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:11:34,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-11-18 20:11:34,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:34,629 INFO L225 Difference]: With dead ends: 30 [2022-11-18 20:11:34,629 INFO L226 Difference]: Without dead ends: 28 [2022-11-18 20:11:34,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:11:34,631 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 9 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:34,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 71 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:11:34,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-18 20:11:34,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2022-11-18 20:11:34,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:34,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2022-11-18 20:11:34,636 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 13 [2022-11-18 20:11:34,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:34,637 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2022-11-18 20:11:34,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:34,637 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2022-11-18 20:11:34,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 20:11:34,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:34,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:34,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:11:34,654 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:11:34,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:34,655 INFO L85 PathProgramCache]: Analyzing trace with hash 451653561, now seen corresponding path program 1 times [2022-11-18 20:11:34,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:34,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213063070] [2022-11-18 20:11:34,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:34,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:35,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:35,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:35,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213063070] [2022-11-18 20:11:35,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213063070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:11:35,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:11:35,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:11:35,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578532205] [2022-11-18 20:11:35,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:11:35,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:11:35,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:35,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:11:35,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:11:35,051 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:35,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:35,175 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2022-11-18 20:11:35,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:11:35,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-11-18 20:11:35,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:35,178 INFO L225 Difference]: With dead ends: 40 [2022-11-18 20:11:35,180 INFO L226 Difference]: Without dead ends: 29 [2022-11-18 20:11:35,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:11:35,183 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 57 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:35,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 21 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:11:35,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-18 20:11:35,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2022-11-18 20:11:35,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:35,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2022-11-18 20:11:35,197 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 13 [2022-11-18 20:11:35,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:35,198 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-18 20:11:35,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:35,199 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2022-11-18 20:11:35,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 20:11:35,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:35,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:35,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:11:35,201 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:11:35,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:35,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1654662766, now seen corresponding path program 1 times [2022-11-18 20:11:35,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:35,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571711027] [2022-11-18 20:11:35,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:35,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:35,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:35,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:35,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571711027] [2022-11-18 20:11:35,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571711027] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:11:35,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954764828] [2022-11-18 20:11:35,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:35,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:35,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:11:35,930 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:11:35,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:11:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:36,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 20:11:36,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:36,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-18 20:11:36,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-18 20:11:36,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-18 20:11:36,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:36,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 20:11:36,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:11:36,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:36,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:11:36,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-11-18 20:11:36,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-11-18 20:11:36,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:36,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954764828] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:11:36,640 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:11:36,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 6] total 18 [2022-11-18 20:11:36,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305187690] [2022-11-18 20:11:36,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:11:36,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:11:36,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:36,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:11:36,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:11:36,643 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:37,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:37,572 INFO L93 Difference]: Finished difference Result 131 states and 172 transitions. [2022-11-18 20:11:37,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:11:37,573 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 0 states have call successors, (0), 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 19 [2022-11-18 20:11:37,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:37,578 INFO L225 Difference]: With dead ends: 131 [2022-11-18 20:11:37,578 INFO L226 Difference]: Without dead ends: 114 [2022-11-18 20:11:37,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=293, Invalid=897, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 20:11:37,584 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 321 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:37,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 133 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:11:37,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-18 20:11:37,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 42. [2022-11-18 20:11:37,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 41 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:37,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 59 transitions. [2022-11-18 20:11:37,600 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 59 transitions. Word has length 19 [2022-11-18 20:11:37,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:37,601 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 59 transitions. [2022-11-18 20:11:37,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:37,602 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 59 transitions. [2022-11-18 20:11:37,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 20:11:37,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:37,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:37,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:11:37,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:37,810 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:11:37,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:37,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1912828204, now seen corresponding path program 1 times [2022-11-18 20:11:37,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:37,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34636604] [2022-11-18 20:11:37,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:37,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:37,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:37,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:37,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34636604] [2022-11-18 20:11:37,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34636604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:11:37,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:11:37,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:11:37,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134573237] [2022-11-18 20:11:37,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:11:37,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:11:37,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:37,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:11:37,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:11:37,912 INFO L87 Difference]: Start difference. First operand 42 states and 59 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:37,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:37,976 INFO L93 Difference]: Finished difference Result 69 states and 93 transitions. [2022-11-18 20:11:37,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:11:37,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-11-18 20:11:37,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:37,979 INFO L225 Difference]: With dead ends: 69 [2022-11-18 20:11:37,981 INFO L226 Difference]: Without dead ends: 52 [2022-11-18 20:11:37,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:11:37,983 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 40 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:37,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 49 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:11:37,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-18 20:11:37,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 42. [2022-11-18 20:11:37,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 41 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:37,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions. [2022-11-18 20:11:38,000 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 57 transitions. Word has length 19 [2022-11-18 20:11:38,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:38,000 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 57 transitions. [2022-11-18 20:11:38,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:38,001 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 57 transitions. [2022-11-18 20:11:38,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 20:11:38,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:38,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:38,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:11:38,003 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:11:38,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:38,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1519801194, now seen corresponding path program 1 times [2022-11-18 20:11:38,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:38,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2387412] [2022-11-18 20:11:38,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:38,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:38,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:38,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:38,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2387412] [2022-11-18 20:11:38,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2387412] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:11:38,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925876405] [2022-11-18 20:11:38,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:38,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:38,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:11:38,445 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:11:38,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:11:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:38,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-18 20:11:38,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:38,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-18 20:11:38,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-18 20:11:38,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-18 20:11:38,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2022-11-18 20:11:38,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:38,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:11:38,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2022-11-18 20:11:38,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-18 20:11:38,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:38,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925876405] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:11:38,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:11:38,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 7] total 16 [2022-11-18 20:11:38,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213783967] [2022-11-18 20:11:38,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:11:38,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:11:38,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:38,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:11:38,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:11:38,901 INFO L87 Difference]: Start difference. First operand 42 states and 57 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:39,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:39,693 INFO L93 Difference]: Finished difference Result 113 states and 145 transitions. [2022-11-18 20:11:39,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 20:11:39,696 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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 19 [2022-11-18 20:11:39,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:39,697 INFO L225 Difference]: With dead ends: 113 [2022-11-18 20:11:39,697 INFO L226 Difference]: Without dead ends: 111 [2022-11-18 20:11:39,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=355, Invalid=1051, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 20:11:39,699 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 170 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:39,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 101 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:11:39,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-18 20:11:39,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 51. [2022-11-18 20:11:39,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.4) internal successors, (70), 50 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) [2022-11-18 20:11:39,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 70 transitions. [2022-11-18 20:11:39,717 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 70 transitions. Word has length 19 [2022-11-18 20:11:39,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:39,717 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 70 transitions. [2022-11-18 20:11:39,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:39,718 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 70 transitions. [2022-11-18 20:11:39,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:11:39,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:39,720 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:39,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:11:39,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:39,926 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:11:39,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:39,926 INFO L85 PathProgramCache]: Analyzing trace with hash -2022900031, now seen corresponding path program 1 times [2022-11-18 20:11:39,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:39,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473909405] [2022-11-18 20:11:39,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:39,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:40,514 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:40,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:40,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473909405] [2022-11-18 20:11:40,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473909405] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:11:40,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688998045] [2022-11-18 20:11:40,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:40,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:40,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:11:40,516 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:11:40,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:11:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:40,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 20:11:40,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:40,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-18 20:11:40,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-18 20:11:40,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:11:40,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:11:40,968 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:40,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:11:41,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-18 20:11:41,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2022-11-18 20:11:41,293 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:41,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688998045] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:11:41,293 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:11:41,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 23 [2022-11-18 20:11:41,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945541039] [2022-11-18 20:11:41,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:11:41,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 20:11:41,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:41,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:11:41,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:11:41,296 INFO L87 Difference]: Start difference. First operand 51 states and 70 transitions. Second operand has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:42,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:42,776 INFO L93 Difference]: Finished difference Result 196 states and 252 transitions. [2022-11-18 20:11:42,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 20:11:42,783 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 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 25 [2022-11-18 20:11:42,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:42,785 INFO L225 Difference]: With dead ends: 196 [2022-11-18 20:11:42,785 INFO L226 Difference]: Without dead ends: 163 [2022-11-18 20:11:42,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=487, Invalid=1865, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 20:11:42,787 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 508 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:42,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 180 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:11:42,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-18 20:11:42,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 70. [2022-11-18 20:11:42,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.318840579710145) internal successors, (91), 69 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:42,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 91 transitions. [2022-11-18 20:11:42,829 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 91 transitions. Word has length 25 [2022-11-18 20:11:42,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:42,830 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 91 transitions. [2022-11-18 20:11:42,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:42,830 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 91 transitions. [2022-11-18 20:11:42,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:11:42,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:42,831 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:42,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:11:43,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 20:11:43,037 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:11:43,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:43,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1418062365, now seen corresponding path program 1 times [2022-11-18 20:11:43,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:43,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718097645] [2022-11-18 20:11:43,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:43,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:43,074 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:43,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:43,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718097645] [2022-11-18 20:11:43,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718097645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:11:43,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:11:43,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:11:43,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897411757] [2022-11-18 20:11:43,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:11:43,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:11:43,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:43,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:11:43,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:11:43,076 INFO L87 Difference]: Start difference. First operand 70 states and 91 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:43,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:43,104 INFO L93 Difference]: Finished difference Result 102 states and 125 transitions. [2022-11-18 20:11:43,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:11:43,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2022-11-18 20:11:43,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:43,107 INFO L225 Difference]: With dead ends: 102 [2022-11-18 20:11:43,107 INFO L226 Difference]: Without dead ends: 75 [2022-11-18 20:11:43,108 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 [2022-11-18 20:11:43,108 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 13 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:43,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 41 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:11:43,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-18 20:11:43,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 59. [2022-11-18 20:11:43,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.293103448275862) internal successors, (75), 58 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:43,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2022-11-18 20:11:43,120 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 25 [2022-11-18 20:11:43,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:43,121 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2022-11-18 20:11:43,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:43,121 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2022-11-18 20:11:43,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:11:43,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:43,122 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:43,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:11:43,122 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:11:43,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:43,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1963473599, now seen corresponding path program 1 times [2022-11-18 20:11:43,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:43,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531890095] [2022-11-18 20:11:43,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:43,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:43,482 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:43,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:43,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531890095] [2022-11-18 20:11:43,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531890095] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:11:43,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868625807] [2022-11-18 20:11:43,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:43,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:43,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:11:43,488 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:11:43,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:11:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:43,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 20:11:43,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:43,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-18 20:11:43,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-18 20:11:43,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2022-11-18 20:11:43,788 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:43,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:11:43,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-11-18 20:11:43,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-18 20:11:43,992 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:43,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868625807] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:11:43,993 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:11:43,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 19 [2022-11-18 20:11:43,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510460365] [2022-11-18 20:11:43,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:11:43,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:11:43,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:43,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:11:43,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:11:43,995 INFO L87 Difference]: Start difference. First operand 59 states and 75 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:44,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:44,734 INFO L93 Difference]: Finished difference Result 150 states and 187 transitions. [2022-11-18 20:11:44,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:11:44,735 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 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 25 [2022-11-18 20:11:44,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:44,736 INFO L225 Difference]: With dead ends: 150 [2022-11-18 20:11:44,736 INFO L226 Difference]: Without dead ends: 148 [2022-11-18 20:11:44,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=323, Invalid=1159, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 20:11:44,738 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 163 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:44,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 146 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:11:44,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-18 20:11:44,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 73. [2022-11-18 20:11:44,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3055555555555556) internal successors, (94), 72 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:44,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 94 transitions. [2022-11-18 20:11:44,756 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 94 transitions. Word has length 25 [2022-11-18 20:11:44,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:44,756 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 94 transitions. [2022-11-18 20:11:44,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:44,757 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 94 transitions. [2022-11-18 20:11:44,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 20:11:44,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:44,758 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:44,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-18 20:11:44,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:44,964 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:11:44,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:44,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1272777940, now seen corresponding path program 2 times [2022-11-18 20:11:44,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:44,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930000526] [2022-11-18 20:11:44,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:44,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:45,394 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:45,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:45,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930000526] [2022-11-18 20:11:45,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930000526] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:11:45,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510844396] [2022-11-18 20:11:45,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:11:45,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:45,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:11:45,397 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:11:45,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:11:45,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:11:45,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:11:45,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 20:11:45,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:45,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-18 20:11:45,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:11:45,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:11:45,821 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:45,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:11:46,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-18 20:11:46,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2022-11-18 20:11:46,042 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:46,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510844396] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:11:46,043 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:11:46,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 21 [2022-11-18 20:11:46,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671586084] [2022-11-18 20:11:46,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:11:46,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:11:46,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:46,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:11:46,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:11:46,045 INFO L87 Difference]: Start difference. First operand 73 states and 94 transitions. Second operand has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:47,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:47,466 INFO L93 Difference]: Finished difference Result 196 states and 244 transitions. [2022-11-18 20:11:47,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 20:11:47,475 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 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 31 [2022-11-18 20:11:47,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:47,477 INFO L225 Difference]: With dead ends: 196 [2022-11-18 20:11:47,477 INFO L226 Difference]: Without dead ends: 186 [2022-11-18 20:11:47,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=404, Invalid=1576, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 20:11:47,480 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 225 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:47,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 181 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:11:47,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-11-18 20:11:47,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 80. [2022-11-18 20:11:47,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.2784810126582278) internal successors, (101), 79 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:47,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2022-11-18 20:11:47,509 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 31 [2022-11-18 20:11:47,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:47,511 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2022-11-18 20:11:47,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:47,511 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2022-11-18 20:11:47,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 20:11:47,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:47,513 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:47,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:11:47,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:11:47,720 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:11:47,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:47,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1491632658, now seen corresponding path program 1 times [2022-11-18 20:11:47,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:47,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723603703] [2022-11-18 20:11:47,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:47,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:48,073 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:48,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:48,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723603703] [2022-11-18 20:11:48,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723603703] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:11:48,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144073403] [2022-11-18 20:11:48,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:48,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:48,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:11:48,075 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:11:48,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:11:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:48,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 20:11:48,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:48,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-18 20:11:48,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:11:48,550 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:48,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:11:48,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-11-18 20:11:48,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-18 20:11:48,695 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:48,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144073403] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:11:48,695 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:11:48,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 22 [2022-11-18 20:11:48,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075755204] [2022-11-18 20:11:48,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:11:48,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:11:48,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:48,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:11:48,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:11:48,698 INFO L87 Difference]: Start difference. First operand 80 states and 101 transitions. Second operand has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 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) [2022-11-18 20:11:49,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:49,879 INFO L93 Difference]: Finished difference Result 303 states and 387 transitions. [2022-11-18 20:11:49,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 20:11:49,879 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 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 31 [2022-11-18 20:11:49,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:49,880 INFO L225 Difference]: With dead ends: 303 [2022-11-18 20:11:49,880 INFO L226 Difference]: Without dead ends: 301 [2022-11-18 20:11:49,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 927 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=542, Invalid=2538, Unknown=0, NotChecked=0, Total=3080 [2022-11-18 20:11:49,882 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 307 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:49,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 133 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:11:49,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-18 20:11:49,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 117. [2022-11-18 20:11:49,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.2758620689655173) internal successors, (148), 116 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:49,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 148 transitions. [2022-11-18 20:11:49,908 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 148 transitions. Word has length 31 [2022-11-18 20:11:49,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:49,908 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 148 transitions. [2022-11-18 20:11:49,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 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) [2022-11-18 20:11:49,908 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 148 transitions. [2022-11-18 20:11:49,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 20:11:49,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:49,910 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:49,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-18 20:11:50,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 20:11:50,116 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:11:50,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:50,117 INFO L85 PathProgramCache]: Analyzing trace with hash -613557008, now seen corresponding path program 1 times [2022-11-18 20:11:50,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:50,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654069774] [2022-11-18 20:11:50,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:50,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:50,174 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:11:50,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:50,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654069774] [2022-11-18 20:11:50,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654069774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:11:50,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:11:50,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:11:50,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775906836] [2022-11-18 20:11:50,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:11:50,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:11:50,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:50,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:11:50,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:11:50,177 INFO L87 Difference]: Start difference. First operand 117 states and 148 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:50,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:50,218 INFO L93 Difference]: Finished difference Result 166 states and 207 transitions. [2022-11-18 20:11:50,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:11:50,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 31 [2022-11-18 20:11:50,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:50,220 INFO L225 Difference]: With dead ends: 166 [2022-11-18 20:11:50,220 INFO L226 Difference]: Without dead ends: 133 [2022-11-18 20:11:50,221 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 [2022-11-18 20:11:50,221 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 14 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:50,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 39 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:11:50,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-18 20:11:50,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 117. [2022-11-18 20:11:50,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.2586206896551724) internal successors, (146), 116 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:50,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 146 transitions. [2022-11-18 20:11:50,242 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 146 transitions. Word has length 31 [2022-11-18 20:11:50,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:50,243 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 146 transitions. [2022-11-18 20:11:50,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:50,243 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 146 transitions. [2022-11-18 20:11:50,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 20:11:50,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:50,249 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:50,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:11:50,250 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:11:50,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:50,250 INFO L85 PathProgramCache]: Analyzing trace with hash -830647440, now seen corresponding path program 2 times [2022-11-18 20:11:50,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:50,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144928760] [2022-11-18 20:11:50,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:50,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:50,294 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:11:50,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:50,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144928760] [2022-11-18 20:11:50,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144928760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:11:50,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:11:50,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:11:50,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432747897] [2022-11-18 20:11:50,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:11:50,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:11:50,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:50,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:11:50,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:11:50,297 INFO L87 Difference]: Start difference. First operand 117 states and 146 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:50,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:50,345 INFO L93 Difference]: Finished difference Result 149 states and 182 transitions. [2022-11-18 20:11:50,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:11:50,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 31 [2022-11-18 20:11:50,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:50,347 INFO L225 Difference]: With dead ends: 149 [2022-11-18 20:11:50,347 INFO L226 Difference]: Without dead ends: 116 [2022-11-18 20:11:50,347 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 [2022-11-18 20:11:50,348 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 12 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:50,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 55 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:11:50,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-18 20:11:50,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 100. [2022-11-18 20:11:50,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.2424242424242424) internal successors, (123), 99 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:50,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 123 transitions. [2022-11-18 20:11:50,366 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 123 transitions. Word has length 31 [2022-11-18 20:11:50,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:50,366 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 123 transitions. [2022-11-18 20:11:50,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:50,366 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 123 transitions. [2022-11-18 20:11:50,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 20:11:50,367 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:50,367 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:50,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:11:50,368 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:11:50,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:50,368 INFO L85 PathProgramCache]: Analyzing trace with hash -2136932185, now seen corresponding path program 3 times [2022-11-18 20:11:50,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:50,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383701404] [2022-11-18 20:11:50,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:50,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:50,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:50,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383701404] [2022-11-18 20:11:50,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383701404] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:11:50,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681827346] [2022-11-18 20:11:50,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:11:50,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:50,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:11:50,736 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:11:50,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:11:50,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 20:11:50,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:11:50,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:11:50,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:50,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:11:51,037 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:51,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:11:51,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-11-18 20:11:51,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-18 20:11:51,162 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:51,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681827346] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:11:51,162 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:11:51,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 22 [2022-11-18 20:11:51,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769741932] [2022-11-18 20:11:51,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:11:51,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:11:51,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:51,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:11:51,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:11:51,164 INFO L87 Difference]: Start difference. First operand 100 states and 123 transitions. Second operand has 22 states, 22 states have (on average 4.181818181818182) internal successors, (92), 22 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:53,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:53,150 INFO L93 Difference]: Finished difference Result 433 states and 518 transitions. [2022-11-18 20:11:53,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-18 20:11:53,150 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.181818181818182) internal successors, (92), 22 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-18 20:11:53,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:53,153 INFO L225 Difference]: With dead ends: 433 [2022-11-18 20:11:53,153 INFO L226 Difference]: Without dead ends: 431 [2022-11-18 20:11:53,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1620 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=856, Invalid=4546, Unknown=0, NotChecked=0, Total=5402 [2022-11-18 20:11:53,155 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 337 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:53,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 236 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:11:53,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-11-18 20:11:53,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 227. [2022-11-18 20:11:53,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.2743362831858407) internal successors, (288), 226 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:53,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 288 transitions. [2022-11-18 20:11:53,193 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 288 transitions. Word has length 37 [2022-11-18 20:11:53,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:53,194 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 288 transitions. [2022-11-18 20:11:53,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.181818181818182) internal successors, (92), 22 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:53,194 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 288 transitions. [2022-11-18 20:11:53,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 20:11:53,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:53,195 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:53,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-18 20:11:53,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:53,396 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:11:53,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:53,396 INFO L85 PathProgramCache]: Analyzing trace with hash 234807077, now seen corresponding path program 1 times [2022-11-18 20:11:53,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:53,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805703312] [2022-11-18 20:11:53,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:53,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:53,813 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:53,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:53,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805703312] [2022-11-18 20:11:53,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805703312] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:11:53,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709221735] [2022-11-18 20:11:53,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:53,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:53,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:11:53,816 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:11:53,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:11:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:53,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 20:11:53,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:53,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:11:54,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:11:54,244 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:54,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:11:54,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-18 20:11:54,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2022-11-18 20:11:54,439 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:54,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709221735] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:11:54,440 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:11:54,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-11-18 20:11:54,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402996885] [2022-11-18 20:11:54,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:11:54,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 20:11:54,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:54,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 20:11:54,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:11:54,443 INFO L87 Difference]: Start difference. First operand 227 states and 288 transitions. Second operand has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 24 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:55,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:55,925 INFO L93 Difference]: Finished difference Result 568 states and 696 transitions. [2022-11-18 20:11:55,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 20:11:55,925 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 24 states have internal predecessors, (100), 0 states have call successors, (0), 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 37 [2022-11-18 20:11:55,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:55,928 INFO L225 Difference]: With dead ends: 568 [2022-11-18 20:11:55,928 INFO L226 Difference]: Without dead ends: 485 [2022-11-18 20:11:55,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=583, Invalid=2497, Unknown=0, NotChecked=0, Total=3080 [2022-11-18 20:11:55,930 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 311 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:55,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 223 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:11:55,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-11-18 20:11:55,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 308. [2022-11-18 20:11:56,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.244299674267101) internal successors, (382), 307 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:56,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 382 transitions. [2022-11-18 20:11:56,002 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 382 transitions. Word has length 37 [2022-11-18 20:11:56,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:56,002 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 382 transitions. [2022-11-18 20:11:56,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 24 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:56,003 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 382 transitions. [2022-11-18 20:11:56,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 20:11:56,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:56,004 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:56,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:11:56,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:11:56,218 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:11:56,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:56,219 INFO L85 PathProgramCache]: Analyzing trace with hash -81425862, now seen corresponding path program 4 times [2022-11-18 20:11:56,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:56,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474550717] [2022-11-18 20:11:56,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:56,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:56,679 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 33 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:56,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:56,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474550717] [2022-11-18 20:11:56,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474550717] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:11:56,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330185778] [2022-11-18 20:11:56,680 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:11:56,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:56,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:11:56,682 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:11:56,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:11:56,770 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:11:56,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:11:56,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:11:56,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:57,319 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:57,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:11:57,589 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:57,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330185778] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:11:57,589 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:11:57,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 30 [2022-11-18 20:11:57,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671637793] [2022-11-18 20:11:57,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:11:57,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 20:11:57,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:57,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 20:11:57,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=663, Unknown=0, NotChecked=0, Total=870 [2022-11-18 20:11:57,593 INFO L87 Difference]: Start difference. First operand 308 states and 382 transitions. Second operand has 30 states, 30 states have (on average 3.8666666666666667) internal successors, (116), 30 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:58,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:58,125 INFO L93 Difference]: Finished difference Result 486 states and 575 transitions. [2022-11-18 20:11:58,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:11:58,125 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.8666666666666667) internal successors, (116), 30 states have internal predecessors, (116), 0 states have call successors, (0), 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 43 [2022-11-18 20:11:58,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:58,127 INFO L225 Difference]: With dead ends: 486 [2022-11-18 20:11:58,127 INFO L226 Difference]: Without dead ends: 375 [2022-11-18 20:11:58,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=384, Invalid=1176, Unknown=0, NotChecked=0, Total=1560 [2022-11-18 20:11:58,129 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 399 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:58,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 104 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:11:58,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-11-18 20:11:58,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 314. [2022-11-18 20:11:58,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 1.2236421725239617) internal successors, (383), 313 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:58,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 383 transitions. [2022-11-18 20:11:58,191 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 383 transitions. Word has length 43 [2022-11-18 20:11:58,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:58,192 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 383 transitions. [2022-11-18 20:11:58,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.8666666666666667) internal successors, (116), 30 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:58,192 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 383 transitions. [2022-11-18 20:11:58,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 20:11:58,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:58,193 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:58,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:11:58,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:58,398 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:11:58,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:58,398 INFO L85 PathProgramCache]: Analyzing trace with hash 548376636, now seen corresponding path program 1 times [2022-11-18 20:11:58,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:58,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505912775] [2022-11-18 20:11:58,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:58,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:58,433 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 20:11:58,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:58,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505912775] [2022-11-18 20:11:58,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505912775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:11:58,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:11:58,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:11:58,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056581210] [2022-11-18 20:11:58,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:11:58,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:11:58,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:58,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:11:58,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:11:58,436 INFO L87 Difference]: Start difference. First operand 314 states and 383 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:58,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:58,512 INFO L93 Difference]: Finished difference Result 432 states and 519 transitions. [2022-11-18 20:11:58,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:11:58,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 43 [2022-11-18 20:11:58,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:58,514 INFO L225 Difference]: With dead ends: 432 [2022-11-18 20:11:58,514 INFO L226 Difference]: Without dead ends: 290 [2022-11-18 20:11:58,515 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 [2022-11-18 20:11:58,516 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 14 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:58,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 54 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:11:58,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-11-18 20:11:58,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 257. [2022-11-18 20:11:58,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.19921875) internal successors, (307), 256 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:58,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 307 transitions. [2022-11-18 20:11:58,567 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 307 transitions. Word has length 43 [2022-11-18 20:11:58,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:58,567 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 307 transitions. [2022-11-18 20:11:58,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:58,567 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 307 transitions. [2022-11-18 20:11:58,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-18 20:11:58,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:58,568 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:58,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:11:58,569 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:11:58,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:58,569 INFO L85 PathProgramCache]: Analyzing trace with hash -457370065, now seen corresponding path program 5 times [2022-11-18 20:11:58,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:58,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737536417] [2022-11-18 20:11:58,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:58,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:59,295 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:59,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:59,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737536417] [2022-11-18 20:11:59,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737536417] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:11:59,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113465797] [2022-11-18 20:11:59,296 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:11:59,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:59,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:11:59,297 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:11:59,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:11:59,445 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-18 20:11:59,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:11:59,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 20:11:59,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:59,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-18 20:11:59,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:59,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-11-18 20:11:59,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:59,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-11-18 20:11:59,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:59,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-11-18 20:11:59,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:59,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-11-18 20:12:00,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:12:00,048 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 26 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:12:00,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:12:00,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2022-11-18 20:12:00,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2022-11-18 20:12:00,777 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 26 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:12:00,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113465797] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:12:00,777 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:12:00,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 12] total 33 [2022-11-18 20:12:00,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751773309] [2022-11-18 20:12:00,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:12:00,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 20:12:00,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:00,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 20:12:00,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=951, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 20:12:00,780 INFO L87 Difference]: Start difference. First operand 257 states and 307 transitions. Second operand has 33 states, 33 states have (on average 3.909090909090909) internal successors, (129), 33 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:04,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:12:04,286 INFO L93 Difference]: Finished difference Result 528 states and 608 transitions. [2022-11-18 20:12:04,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-18 20:12:04,286 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.909090909090909) internal successors, (129), 33 states have internal predecessors, (129), 0 states have call successors, (0), 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 49 [2022-11-18 20:12:04,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:12:04,289 INFO L225 Difference]: With dead ends: 528 [2022-11-18 20:12:04,289 INFO L226 Difference]: Without dead ends: 518 [2022-11-18 20:12:04,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 87 SyntacticMatches, 5 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2105 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1005, Invalid=7005, Unknown=0, NotChecked=0, Total=8010 [2022-11-18 20:12:04,292 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 661 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 1770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 156 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:12:04,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 500 Invalid, 1770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1448 Invalid, 0 Unknown, 156 Unchecked, 1.2s Time] [2022-11-18 20:12:04,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-11-18 20:12:04,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 353. [2022-11-18 20:12:04,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.1761363636363635) internal successors, (414), 352 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:04,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 414 transitions. [2022-11-18 20:12:04,370 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 414 transitions. Word has length 49 [2022-11-18 20:12:04,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:12:04,370 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 414 transitions. [2022-11-18 20:12:04,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.909090909090909) internal successors, (129), 33 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:04,371 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 414 transitions. [2022-11-18 20:12:04,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-18 20:12:04,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:12:04,372 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:04,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:12:04,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 20:12:04,578 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:12:04,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:04,579 INFO L85 PathProgramCache]: Analyzing trace with hash -171220375, now seen corresponding path program 2 times [2022-11-18 20:12:04,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:04,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404114047] [2022-11-18 20:12:04,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:04,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:04,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:05,192 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:05,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:05,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404114047] [2022-11-18 20:12:05,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404114047] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:12:05,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393841914] [2022-11-18 20:12:05,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:12:05,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:12:05,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:12:05,194 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:12:05,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:12:05,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:12:05,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:12:05,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 20:12:05,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:12:05,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-18 20:12:05,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-18 20:12:05,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-18 20:12:05,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:12:05,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:12:05,823 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:05,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:12:06,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-18 20:12:06,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2022-11-18 20:12:06,273 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:06,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393841914] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:12:06,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:12:06,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 33 [2022-11-18 20:12:06,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132032131] [2022-11-18 20:12:06,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:12:06,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 20:12:06,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:06,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 20:12:06,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 20:12:06,276 INFO L87 Difference]: Start difference. First operand 353 states and 414 transitions. Second operand has 33 states, 33 states have (on average 4.090909090909091) internal successors, (135), 33 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:09,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:12:09,677 INFO L93 Difference]: Finished difference Result 717 states and 812 transitions. [2022-11-18 20:12:09,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-18 20:12:09,677 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.090909090909091) internal successors, (135), 33 states have internal predecessors, (135), 0 states have call successors, (0), 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 49 [2022-11-18 20:12:09,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:12:09,679 INFO L225 Difference]: With dead ends: 717 [2022-11-18 20:12:09,680 INFO L226 Difference]: Without dead ends: 707 [2022-11-18 20:12:09,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 79 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1755 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1007, Invalid=6133, Unknown=0, NotChecked=0, Total=7140 [2022-11-18 20:12:09,682 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 456 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 1428 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 1428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:12:09,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 484 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 1428 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 20:12:09,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2022-11-18 20:12:09,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 397. [2022-11-18 20:12:09,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 1.1641414141414141) internal successors, (461), 396 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:09,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 461 transitions. [2022-11-18 20:12:09,777 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 461 transitions. Word has length 49 [2022-11-18 20:12:09,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:12:09,777 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 461 transitions. [2022-11-18 20:12:09,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.090909090909091) internal successors, (135), 33 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:09,777 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 461 transitions. [2022-11-18 20:12:09,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-18 20:12:09,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:12:09,779 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:09,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:12:09,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:12:09,985 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:12:09,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:09,985 INFO L85 PathProgramCache]: Analyzing trace with hash -317440667, now seen corresponding path program 1 times [2022-11-18 20:12:09,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:09,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055087626] [2022-11-18 20:12:09,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:09,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:10,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:10,444 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:10,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:10,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055087626] [2022-11-18 20:12:10,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055087626] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:12:10,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892899077] [2022-11-18 20:12:10,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:10,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:12:10,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:12:10,447 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:12:10,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:12:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:10,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-18 20:12:10,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:12:10,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-18 20:12:10,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-18 20:12:10,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-18 20:12:10,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:12:11,086 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:11,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:12:11,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-11-18 20:12:11,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-18 20:12:11,308 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:11,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892899077] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:12:11,308 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:12:11,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 14] total 28 [2022-11-18 20:12:11,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956497969] [2022-11-18 20:12:11,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:12:11,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 20:12:11,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:11,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 20:12:11,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2022-11-18 20:12:11,310 INFO L87 Difference]: Start difference. First operand 397 states and 461 transitions. Second operand has 28 states, 28 states have (on average 3.8214285714285716) internal successors, (107), 28 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:14,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:12:14,066 INFO L93 Difference]: Finished difference Result 887 states and 1018 transitions. [2022-11-18 20:12:14,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-11-18 20:12:14,066 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.8214285714285716) internal successors, (107), 28 states have internal predecessors, (107), 0 states have call successors, (0), 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 49 [2022-11-18 20:12:14,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:12:14,072 INFO L225 Difference]: With dead ends: 887 [2022-11-18 20:12:14,072 INFO L226 Difference]: Without dead ends: 885 [2022-11-18 20:12:14,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 80 SyntacticMatches, 6 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4058 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1382, Invalid=10174, Unknown=0, NotChecked=0, Total=11556 [2022-11-18 20:12:14,076 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 518 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:12:14,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 272 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 20:12:14,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2022-11-18 20:12:14,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 449. [2022-11-18 20:12:14,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.1629464285714286) internal successors, (521), 448 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:14,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 521 transitions. [2022-11-18 20:12:14,174 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 521 transitions. Word has length 49 [2022-11-18 20:12:14,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:12:14,175 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 521 transitions. [2022-11-18 20:12:14,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.8214285714285716) internal successors, (107), 28 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:14,175 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 521 transitions. [2022-11-18 20:12:14,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-18 20:12:14,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:12:14,177 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:14,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:12:14,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:12:14,380 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:12:14,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:14,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1701767808, now seen corresponding path program 6 times [2022-11-18 20:12:14,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:14,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383473214] [2022-11-18 20:12:14,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:14,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:15,026 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 10 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:15,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:15,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383473214] [2022-11-18 20:12:15,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383473214] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:12:15,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302400353] [2022-11-18 20:12:15,027 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:12:15,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:12:15,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:12:15,030 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:12:15,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 20:12:15,196 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-18 20:12:15,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:12:15,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-18 20:12:15,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:12:15,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-18 20:12:15,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-18 20:12:15,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-18 20:12:15,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:12:15,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-11-18 20:12:15,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:12:15,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-11-18 20:12:15,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:12:15,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:12:15,534 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:12:15,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2022-11-18 20:12:15,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:12:15,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:12:15,564 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:12:15,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2022-11-18 20:12:16,386 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:12:16,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2022-11-18 20:12:16,398 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 10 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:16,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:12:17,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2022-11-18 20:12:17,709 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:12:17,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 229 treesize of output 197 [2022-11-18 20:12:17,891 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 10 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:17,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302400353] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:12:17,892 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:12:17,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 18] total 47 [2022-11-18 20:12:17,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998017955] [2022-11-18 20:12:17,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:12:17,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-18 20:12:17,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:17,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-18 20:12:17,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1956, Unknown=0, NotChecked=0, Total=2162 [2022-11-18 20:12:17,909 INFO L87 Difference]: Start difference. First operand 449 states and 521 transitions. Second operand has 47 states, 47 states have (on average 3.25531914893617) internal successors, (153), 47 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:32,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:12:32,805 INFO L93 Difference]: Finished difference Result 1178 states and 1313 transitions. [2022-11-18 20:12:32,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-11-18 20:12:32,806 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.25531914893617) internal successors, (153), 47 states have internal predecessors, (153), 0 states have call successors, (0), 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 55 [2022-11-18 20:12:32,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:12:32,809 INFO L225 Difference]: With dead ends: 1178 [2022-11-18 20:12:32,809 INFO L226 Difference]: Without dead ends: 1168 [2022-11-18 20:12:32,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 76 SyntacticMatches, 5 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10026 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=4023, Invalid=28557, Unknown=0, NotChecked=0, Total=32580 [2022-11-18 20:12:32,817 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 1825 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 3050 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1825 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 3731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 3050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:12:32,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1825 Valid, 767 Invalid, 3731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 3050 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-18 20:12:32,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-11-18 20:12:32,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 511. [2022-11-18 20:12:32,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 510 states have (on average 1.1588235294117648) internal successors, (591), 510 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:32,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 591 transitions. [2022-11-18 20:12:32,946 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 591 transitions. Word has length 55 [2022-11-18 20:12:32,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:12:32,946 INFO L495 AbstractCegarLoop]: Abstraction has 511 states and 591 transitions. [2022-11-18 20:12:32,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.25531914893617) internal successors, (153), 47 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:32,946 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 591 transitions. [2022-11-18 20:12:32,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-18 20:12:32,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:12:32,948 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:32,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:12:33,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:12:33,154 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:12:33,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:33,154 INFO L85 PathProgramCache]: Analyzing trace with hash -607563004, now seen corresponding path program 1 times [2022-11-18 20:12:33,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:33,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092667820] [2022-11-18 20:12:33,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:33,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:33,196 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-18 20:12:33,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:33,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092667820] [2022-11-18 20:12:33,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092667820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:12:33,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:12:33,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:12:33,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215683970] [2022-11-18 20:12:33,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:12:33,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:12:33,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:33,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:12:33,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:12:33,198 INFO L87 Difference]: Start difference. First operand 511 states and 591 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:33,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:12:33,317 INFO L93 Difference]: Finished difference Result 743 states and 854 transitions. [2022-11-18 20:12:33,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:12:33,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-11-18 20:12:33,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:12:33,319 INFO L225 Difference]: With dead ends: 743 [2022-11-18 20:12:33,319 INFO L226 Difference]: Without dead ends: 383 [2022-11-18 20:12:33,321 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 [2022-11-18 20:12:33,322 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 14 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:12:33,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 43 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:12:33,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-11-18 20:12:33,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 325. [2022-11-18 20:12:33,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 1.1111111111111112) internal successors, (360), 324 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:33,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 360 transitions. [2022-11-18 20:12:33,429 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 360 transitions. Word has length 55 [2022-11-18 20:12:33,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:12:33,429 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 360 transitions. [2022-11-18 20:12:33,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:33,429 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 360 transitions. [2022-11-18 20:12:33,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-18 20:12:33,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:12:33,431 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:33,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 20:12:33,431 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:12:33,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:33,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1112564476, now seen corresponding path program 2 times [2022-11-18 20:12:33,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:33,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058230062] [2022-11-18 20:12:33,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:33,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:33,871 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:33,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:33,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058230062] [2022-11-18 20:12:33,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058230062] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:12:33,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067416209] [2022-11-18 20:12:33,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:12:33,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:12:33,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:12:33,873 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:12:33,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 20:12:33,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:12:33,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:12:33,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-18 20:12:33,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:12:34,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-18 20:12:34,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-18 20:12:34,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:12:34,563 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:34,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:12:34,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-11-18 20:12:34,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-18 20:12:34,782 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:34,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067416209] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:12:34,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:12:34,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 15] total 30 [2022-11-18 20:12:34,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608940935] [2022-11-18 20:12:34,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:12:34,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 20:12:34,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:34,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 20:12:34,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=746, Unknown=0, NotChecked=0, Total=870 [2022-11-18 20:12:34,784 INFO L87 Difference]: Start difference. First operand 325 states and 360 transitions. Second operand has 30 states, 30 states have (on average 3.933333333333333) internal successors, (118), 30 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:38,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:12:38,843 INFO L93 Difference]: Finished difference Result 777 states and 857 transitions. [2022-11-18 20:12:38,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-11-18 20:12:38,844 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.933333333333333) internal successors, (118), 30 states have internal predecessors, (118), 0 states have call successors, (0), 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 55 [2022-11-18 20:12:38,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:12:38,846 INFO L225 Difference]: With dead ends: 777 [2022-11-18 20:12:38,846 INFO L226 Difference]: Without dead ends: 775 [2022-11-18 20:12:38,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 91 SyntacticMatches, 5 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8571 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2319, Invalid=20331, Unknown=0, NotChecked=0, Total=22650 [2022-11-18 20:12:38,850 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 611 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 2108 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 2421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 2108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:12:38,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 386 Invalid, 2421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 2108 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 20:12:38,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2022-11-18 20:12:38,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 331. [2022-11-18 20:12:38,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 1.112121212121212) internal successors, (367), 330 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:38,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 367 transitions. [2022-11-18 20:12:38,935 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 367 transitions. Word has length 55 [2022-11-18 20:12:38,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:12:38,936 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 367 transitions. [2022-11-18 20:12:38,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.933333333333333) internal successors, (118), 30 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:38,936 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 367 transitions. [2022-11-18 20:12:38,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-18 20:12:38,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:12:38,937 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:38,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 20:12:39,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:12:39,143 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:12:39,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:39,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1260464045, now seen corresponding path program 7 times [2022-11-18 20:12:39,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:39,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298986797] [2022-11-18 20:12:39,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:39,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:39,652 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 12 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:39,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:39,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298986797] [2022-11-18 20:12:39,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298986797] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:12:39,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808815810] [2022-11-18 20:12:39,652 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:12:39,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:12:39,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:12:39,654 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:12:39,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 20:12:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:39,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 20:12:39,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:12:39,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-18 20:12:39,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:12:40,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:12:40,404 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 12 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:40,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:12:40,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-18 20:12:40,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2022-11-18 20:12:40,884 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 12 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:40,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808815810] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:12:40,884 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:12:40,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 14] total 39 [2022-11-18 20:12:40,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885766613] [2022-11-18 20:12:40,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:12:40,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-18 20:12:40,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:40,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-18 20:12:40,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1344, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 20:12:40,886 INFO L87 Difference]: Start difference. First operand 331 states and 367 transitions. Second operand has 39 states, 39 states have (on average 4.384615384615385) internal successors, (171), 39 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:47,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:12:47,177 INFO L93 Difference]: Finished difference Result 665 states and 717 transitions. [2022-11-18 20:12:47,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-11-18 20:12:47,177 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.384615384615385) internal successors, (171), 39 states have internal predecessors, (171), 0 states have call successors, (0), 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 61 [2022-11-18 20:12:47,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:12:47,180 INFO L225 Difference]: With dead ends: 665 [2022-11-18 20:12:47,180 INFO L226 Difference]: Without dead ends: 655 [2022-11-18 20:12:47,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3786 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1676, Invalid=12366, Unknown=0, NotChecked=0, Total=14042 [2022-11-18 20:12:47,182 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 575 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 2704 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 3008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 2704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:12:47,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 743 Invalid, 3008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 2704 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-18 20:12:47,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2022-11-18 20:12:47,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 335. [2022-11-18 20:12:47,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 1.1107784431137724) internal successors, (371), 334 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:47,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 371 transitions. [2022-11-18 20:12:47,297 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 371 transitions. Word has length 61 [2022-11-18 20:12:47,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:12:47,298 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 371 transitions. [2022-11-18 20:12:47,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.384615384615385) internal successors, (171), 39 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:47,298 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 371 transitions. [2022-11-18 20:12:47,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-18 20:12:47,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:12:47,302 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:47,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 20:12:47,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-18 20:12:47,507 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:12:47,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:47,508 INFO L85 PathProgramCache]: Analyzing trace with hash -2088818609, now seen corresponding path program 3 times [2022-11-18 20:12:47,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:47,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776696797] [2022-11-18 20:12:47,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:47,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:47,936 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:47,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:47,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776696797] [2022-11-18 20:12:47,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776696797] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:12:47,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902913931] [2022-11-18 20:12:47,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:12:47,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:12:47,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:12:47,939 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:12:47,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 20:12:48,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-18 20:12:48,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:12:48,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 20:12:48,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:12:48,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-18 20:12:48,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-18 20:12:48,585 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-18 20:12:48,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 20 [2022-11-18 20:12:48,612 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:48,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:12:48,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-11-18 20:12:48,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-18 20:12:48,754 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:48,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902913931] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:12:48,754 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:12:48,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 22 [2022-11-18 20:12:48,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905679274] [2022-11-18 20:12:48,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:12:48,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:12:48,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:48,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:12:48,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:12:48,756 INFO L87 Difference]: Start difference. First operand 335 states and 371 transitions. Second operand has 22 states, 22 states have (on average 4.863636363636363) internal successors, (107), 22 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:55,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:12:55,776 INFO L93 Difference]: Finished difference Result 1201 states and 1323 transitions. [2022-11-18 20:12:55,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2022-11-18 20:12:55,777 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.863636363636363) internal successors, (107), 22 states have internal predecessors, (107), 0 states have call successors, (0), 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 61 [2022-11-18 20:12:55,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:12:55,781 INFO L225 Difference]: With dead ends: 1201 [2022-11-18 20:12:55,781 INFO L226 Difference]: Without dead ends: 1199 [2022-11-18 20:12:55,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 110 SyntacticMatches, 6 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23485 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=3494, Invalid=51028, Unknown=0, NotChecked=0, Total=54522 [2022-11-18 20:12:55,786 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 546 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 3254 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 3702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 3254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:12:55,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 624 Invalid, 3702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 3254 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-18 20:12:55,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2022-11-18 20:12:55,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 373. [2022-11-18 20:12:55,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 1.1048387096774193) internal successors, (411), 372 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:55,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 411 transitions. [2022-11-18 20:12:55,879 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 411 transitions. Word has length 61 [2022-11-18 20:12:55,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:12:55,879 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 411 transitions. [2022-11-18 20:12:55,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.863636363636363) internal successors, (107), 22 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:55,880 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 411 transitions. [2022-11-18 20:12:55,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-18 20:12:55,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:12:55,881 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:55,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 20:12:56,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:12:56,087 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:12:56,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:56,087 INFO L85 PathProgramCache]: Analyzing trace with hash 873853158, now seen corresponding path program 8 times [2022-11-18 20:12:56,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:56,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744482547] [2022-11-18 20:12:56,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:56,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:56,546 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:56,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:56,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744482547] [2022-11-18 20:12:56,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744482547] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:12:56,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116724681] [2022-11-18 20:12:56,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:12:56,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:12:56,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:12:56,548 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:12:56,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 20:12:56,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:12:56,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:12:56,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-18 20:12:56,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:12:56,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:12:57,276 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:57,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:12:57,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-11-18 20:12:57,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-18 20:12:57,466 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:57,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116724681] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:12:57,467 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:12:57,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 15] total 30 [2022-11-18 20:12:57,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310610828] [2022-11-18 20:12:57,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:12:57,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 20:12:57,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:57,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 20:12:57,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2022-11-18 20:12:57,478 INFO L87 Difference]: Start difference. First operand 373 states and 411 transitions. Second operand has 30 states, 30 states have (on average 4.666666666666667) internal successors, (140), 30 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:07,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:13:07,167 INFO L93 Difference]: Finished difference Result 1312 states and 1439 transitions. [2022-11-18 20:13:07,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 275 states. [2022-11-18 20:13:07,169 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.666666666666667) internal successors, (140), 30 states have internal predecessors, (140), 0 states have call successors, (0), 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 [2022-11-18 20:13:07,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:13:07,172 INFO L225 Difference]: With dead ends: 1312 [2022-11-18 20:13:07,172 INFO L226 Difference]: Without dead ends: 1310 [2022-11-18 20:13:07,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36255 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=6153, Invalid=78237, Unknown=0, NotChecked=0, Total=84390 [2022-11-18 20:13:07,196 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 905 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 4892 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 5245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 4892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:13:07,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 891 Invalid, 5245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 4892 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-18 20:13:07,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2022-11-18 20:13:07,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 383. [2022-11-18 20:13:07,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 1.1047120418848169) internal successors, (422), 382 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:07,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 422 transitions. [2022-11-18 20:13:07,305 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 422 transitions. Word has length 67 [2022-11-18 20:13:07,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:13:07,305 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 422 transitions. [2022-11-18 20:13:07,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.666666666666667) internal successors, (140), 30 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:07,305 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 422 transitions. [2022-11-18 20:13:07,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-18 20:13:07,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:13:07,307 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:07,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 20:13:07,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 20:13:07,512 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:13:07,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:07,513 INFO L85 PathProgramCache]: Analyzing trace with hash -2143972188, now seen corresponding path program 2 times [2022-11-18 20:13:07,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:07,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306876810] [2022-11-18 20:13:07,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:07,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:08,048 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 14 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:08,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:08,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306876810] [2022-11-18 20:13:08,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306876810] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:13:08,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147106731] [2022-11-18 20:13:08,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:13:08,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:08,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:13:08,051 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:13:08,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 20:13:08,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:13:08,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:13:08,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 20:13:08,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:08,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:13:08,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:13:08,894 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 14 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:08,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:13:09,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-18 20:13:09,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2022-11-18 20:13:09,406 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 14 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:09,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147106731] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:13:09,407 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:13:09,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 15] total 42 [2022-11-18 20:13:09,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242535394] [2022-11-18 20:13:09,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:13:09,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-18 20:13:09,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:09,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-18 20:13:09,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1573, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 20:13:09,408 INFO L87 Difference]: Start difference. First operand 383 states and 422 transitions. Second operand has 42 states, 42 states have (on average 4.5) internal successors, (189), 42 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:20,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:13:20,765 INFO L93 Difference]: Finished difference Result 1058 states and 1140 transitions. [2022-11-18 20:13:20,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2022-11-18 20:13:20,766 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.5) internal successors, (189), 42 states have internal predecessors, (189), 0 states have call successors, (0), 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 [2022-11-18 20:13:20,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:13:20,768 INFO L225 Difference]: With dead ends: 1058 [2022-11-18 20:13:20,768 INFO L226 Difference]: Without dead ends: 1048 [2022-11-18 20:13:20,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11601 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=3385, Invalid=32525, Unknown=0, NotChecked=0, Total=35910 [2022-11-18 20:13:20,770 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 1834 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 2557 mSolverCounterSat, 821 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 3378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 821 IncrementalHoareTripleChecker+Valid, 2557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:13:20,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1834 Valid, 652 Invalid, 3378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [821 Valid, 2557 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-18 20:13:20,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2022-11-18 20:13:20,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 439. [2022-11-18 20:13:20,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 1.1004566210045663) internal successors, (482), 438 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:20,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 482 transitions. [2022-11-18 20:13:20,950 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 482 transitions. Word has length 67 [2022-11-18 20:13:20,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:13:20,951 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 482 transitions. [2022-11-18 20:13:20,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.5) internal successors, (189), 42 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:20,951 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 482 transitions. [2022-11-18 20:13:20,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-18 20:13:20,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:13:20,953 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 7, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:20,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 20:13:21,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 20:13:21,159 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:13:21,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:21,159 INFO L85 PathProgramCache]: Analyzing trace with hash 600772409, now seen corresponding path program 9 times [2022-11-18 20:13:21,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:21,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246003404] [2022-11-18 20:13:21,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:21,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:21,766 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 157 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:21,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:21,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246003404] [2022-11-18 20:13:21,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246003404] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:13:21,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961910146] [2022-11-18 20:13:21,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:13:21,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:21,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:13:21,769 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:13:21,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 20:13:21,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-18 20:13:21,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:13:21,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:13:21,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:22,804 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 200 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:22,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:13:23,167 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 200 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:23,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961910146] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:13:23,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:13:23,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 45 [2022-11-18 20:13:23,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940703579] [2022-11-18 20:13:23,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:13:23,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-18 20:13:23,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:23,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-18 20:13:23,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=495, Invalid=1485, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 20:13:23,170 INFO L87 Difference]: Start difference. First operand 439 states and 482 transitions. Second operand has 45 states, 45 states have (on average 4.5777777777777775) internal successors, (206), 45 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:23,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:13:23,751 INFO L93 Difference]: Finished difference Result 792 states and 862 transitions. [2022-11-18 20:13:23,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 20:13:23,751 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 4.5777777777777775) internal successors, (206), 45 states have internal predecessors, (206), 0 states have call successors, (0), 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 73 [2022-11-18 20:13:23,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:13:23,754 INFO L225 Difference]: With dead ends: 792 [2022-11-18 20:13:23,754 INFO L226 Difference]: Without dead ends: 489 [2022-11-18 20:13:23,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=654, Invalid=1998, Unknown=0, NotChecked=0, Total=2652 [2022-11-18 20:13:23,755 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 629 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:13:23,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 270 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:13:23,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-11-18 20:13:23,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 454. [2022-11-18 20:13:23,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 1.0905077262693157) internal successors, (494), 453 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:23,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 494 transitions. [2022-11-18 20:13:23,951 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 494 transitions. Word has length 73 [2022-11-18 20:13:23,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:13:23,952 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 494 transitions. [2022-11-18 20:13:23,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 4.5777777777777775) internal successors, (206), 45 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:23,952 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 494 transitions. [2022-11-18 20:13:23,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-18 20:13:23,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:13:23,954 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 7, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:23,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 20:13:24,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-18 20:13:24,159 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:13:24,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:24,160 INFO L85 PathProgramCache]: Analyzing trace with hash -760676242, now seen corresponding path program 10 times [2022-11-18 20:13:24,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:24,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672753561] [2022-11-18 20:13:24,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:24,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:24,994 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 16 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:24,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:24,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672753561] [2022-11-18 20:13:24,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672753561] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:13:24,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673715517] [2022-11-18 20:13:24,994 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:13:24,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:24,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:13:24,999 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:13:25,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 20:13:25,136 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:13:25,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:13:25,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-18 20:13:25,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:25,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-18 20:13:25,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-18 20:13:25,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-18 20:13:25,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:13:26,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:13:26,115 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 16 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:26,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:13:26,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-18 20:13:26,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2022-11-18 20:13:26,938 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 16 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:26,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673715517] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:13:26,939 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:13:26,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 17] total 49 [2022-11-18 20:13:26,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914877368] [2022-11-18 20:13:26,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:13:26,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-18 20:13:26,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:26,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-18 20:13:26,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=2175, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 20:13:26,941 INFO L87 Difference]: Start difference. First operand 454 states and 494 transitions. Second operand has 49 states, 49 states have (on average 4.591836734693878) internal successors, (225), 49 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:49,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:13:49,199 INFO L93 Difference]: Finished difference Result 1316 states and 1405 transitions. [2022-11-18 20:13:49,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 267 states. [2022-11-18 20:13:49,200 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.591836734693878) internal successors, (225), 49 states have internal predecessors, (225), 0 states have call successors, (0), 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 79 [2022-11-18 20:13:49,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:13:49,204 INFO L225 Difference]: With dead ends: 1316 [2022-11-18 20:13:49,204 INFO L226 Difference]: Without dead ends: 1306 [2022-11-18 20:13:49,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 128 SyntacticMatches, 4 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36790 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=6373, Invalid=91909, Unknown=0, NotChecked=0, Total=98282 [2022-11-18 20:13:49,208 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 1566 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 5859 mSolverCounterSat, 812 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1566 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 6671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 812 IncrementalHoareTripleChecker+Valid, 5859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:13:49,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1566 Valid, 1614 Invalid, 6671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [812 Valid, 5859 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-18 20:13:49,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2022-11-18 20:13:49,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 472. [2022-11-18 20:13:49,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 471 states have (on average 1.089171974522293) internal successors, (513), 471 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:49,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 513 transitions. [2022-11-18 20:13:49,358 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 513 transitions. Word has length 79 [2022-11-18 20:13:49,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:13:49,358 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 513 transitions. [2022-11-18 20:13:49,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.591836734693878) internal successors, (225), 49 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:13:49,359 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 513 transitions. [2022-11-18 20:13:49,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-18 20:13:49,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:13:49,360 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 7, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:49,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 20:13:49,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 20:13:49,566 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:13:49,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:49,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1073875042, now seen corresponding path program 2 times [2022-11-18 20:13:49,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:49,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080041735] [2022-11-18 20:13:49,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:49,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,247 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:50,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:50,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080041735] [2022-11-18 20:13:50,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080041735] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:13:50,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425997767] [2022-11-18 20:13:50,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:13:50,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:50,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:13:50,249 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:13:50,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 20:13:50,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:13:50,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:13:50,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-18 20:13:50,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:50,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-18 20:13:50,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-18 20:13:50,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-18 20:13:50,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:13:51,290 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:51,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:13:51,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-11-18 20:13:51,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-18 20:13:51,569 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:51,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425997767] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:13:51,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:13:51,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 19] total 38 [2022-11-18 20:13:51,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359061652] [2022-11-18 20:13:51,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:13:51,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-18 20:13:51,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:51,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-18 20:13:51,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1250, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 20:13:51,571 INFO L87 Difference]: Start difference. First operand 472 states and 513 transitions. Second operand has 38 states, 38 states have (on average 4.394736842105263) internal successors, (167), 38 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:06,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:06,551 INFO L93 Difference]: Finished difference Result 1721 states and 1889 transitions. [2022-11-18 20:14:06,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 385 states. [2022-11-18 20:14:06,551 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.394736842105263) internal successors, (167), 38 states have internal predecessors, (167), 0 states have call successors, (0), 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 79 [2022-11-18 20:14:06,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:06,559 INFO L225 Difference]: With dead ends: 1721 [2022-11-18 20:14:06,559 INFO L226 Difference]: Without dead ends: 1719 [2022-11-18 20:14:06,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 135 SyntacticMatches, 6 SemanticMatches, 404 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72996 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=9059, Invalid=155371, Unknown=0, NotChecked=0, Total=164430 [2022-11-18 20:14:06,565 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 1955 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 6223 mSolverCounterSat, 709 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1955 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 6932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 709 IncrementalHoareTripleChecker+Valid, 6223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:06,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1955 Valid, 1101 Invalid, 6932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [709 Valid, 6223 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-18 20:14:06,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2022-11-18 20:14:06,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 502. [2022-11-18 20:14:06,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 501 states have (on average 1.089820359281437) internal successors, (546), 501 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:06,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 546 transitions. [2022-11-18 20:14:06,679 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 546 transitions. Word has length 79 [2022-11-18 20:14:06,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:06,679 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 546 transitions. [2022-11-18 20:14:06,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.394736842105263) internal successors, (167), 38 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:06,680 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 546 transitions. [2022-11-18 20:14:06,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-18 20:14:06,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:06,681 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 8, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:06,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-11-18 20:14:06,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:06,886 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:14:06,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:06,887 INFO L85 PathProgramCache]: Analyzing trace with hash -538289983, now seen corresponding path program 11 times [2022-11-18 20:14:06,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:06,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512760367] [2022-11-18 20:14:06,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:06,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:07,721 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 18 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:07,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:07,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512760367] [2022-11-18 20:14:07,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512760367] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:14:07,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752141554] [2022-11-18 20:14:07,722 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:14:07,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:07,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:07,724 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:14:07,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 20:14:08,172 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-11-18 20:14:08,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:14:08,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-18 20:14:08,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:08,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-18 20:14:08,320 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-18 20:14:08,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-11-18 20:14:08,334 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-18 20:14:08,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-11-18 20:14:08,351 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-18 20:14:08,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-11-18 20:14:08,367 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-18 20:14:08,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-11-18 20:14:09,201 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:14:09,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 15 [2022-11-18 20:14:09,237 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 102 proven. 161 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:14:09,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:14:10,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 70 [2022-11-18 20:14:10,486 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:14:10,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 634 treesize of output 566 [2022-11-18 20:14:11,519 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 102 proven. 161 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:14:11,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752141554] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:14:11,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:14:11,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 20] total 53 [2022-11-18 20:14:11,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718259334] [2022-11-18 20:14:11,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:14:11,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-18 20:14:11,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:11,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-18 20:14:11,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2543, Unknown=0, NotChecked=0, Total=2756 [2022-11-18 20:14:11,522 INFO L87 Difference]: Start difference. First operand 502 states and 546 transitions. Second operand has 53 states, 53 states have (on average 4.0) internal successors, (212), 53 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:21,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:21,295 INFO L93 Difference]: Finished difference Result 925 states and 995 transitions. [2022-11-18 20:14:21,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-11-18 20:14:21,295 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.0) internal successors, (212), 53 states have internal predecessors, (212), 0 states have call successors, (0), 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 85 [2022-11-18 20:14:21,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:21,297 INFO L225 Difference]: With dead ends: 925 [2022-11-18 20:14:21,297 INFO L226 Difference]: Without dead ends: 903 [2022-11-18 20:14:21,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 150 SyntacticMatches, 5 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8803 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1942, Invalid=27470, Unknown=0, NotChecked=0, Total=29412 [2022-11-18 20:14:21,300 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 674 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 4943 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 5408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 4943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:21,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 1281 Invalid, 5408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 4943 Invalid, 0 Unknown, 158 Unchecked, 3.6s Time] [2022-11-18 20:14:21,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2022-11-18 20:14:21,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 581. [2022-11-18 20:14:21,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 580 states have (on average 1.0793103448275863) internal successors, (626), 580 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:21,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 626 transitions. [2022-11-18 20:14:21,472 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 626 transitions. Word has length 85 [2022-11-18 20:14:21,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:21,473 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 626 transitions. [2022-11-18 20:14:21,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.0) internal successors, (212), 53 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:21,473 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 626 transitions. [2022-11-18 20:14:21,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-18 20:14:21,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:21,475 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:21,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-18 20:14:21,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:21,681 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:14:21,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:21,681 INFO L85 PathProgramCache]: Analyzing trace with hash 610245309, now seen corresponding path program 4 times [2022-11-18 20:14:21,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:21,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686242734] [2022-11-18 20:14:21,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:21,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:22,469 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 18 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:22,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:22,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686242734] [2022-11-18 20:14:22,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686242734] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:14:22,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62446781] [2022-11-18 20:14:22,470 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:14:22,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:22,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:22,471 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:14:22,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 20:14:22,607 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:14:22,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:14:22,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-18 20:14:22,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:22,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-18 20:14:22,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-18 20:14:22,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:14:23,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:14:23,822 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 18 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:23,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:14:24,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-18 20:14:24,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2022-11-18 20:14:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 18 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:24,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62446781] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:14:24,771 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:14:24,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 19] total 53 [2022-11-18 20:14:24,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025963863] [2022-11-18 20:14:24,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:14:24,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-18 20:14:24,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:24,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-18 20:14:24,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=2565, Unknown=0, NotChecked=0, Total=2756 [2022-11-18 20:14:24,773 INFO L87 Difference]: Start difference. First operand 581 states and 626 transitions. Second operand has 53 states, 53 states have (on average 4.584905660377358) internal successors, (243), 53 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:52,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:52,684 INFO L93 Difference]: Finished difference Result 1769 states and 1876 transitions. [2022-11-18 20:14:52,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 293 states. [2022-11-18 20:14:52,684 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.584905660377358) internal successors, (243), 53 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-11-18 20:14:52,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:52,689 INFO L225 Difference]: With dead ends: 1769 [2022-11-18 20:14:52,689 INFO L226 Difference]: Without dead ends: 1759 [2022-11-18 20:14:52,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 137 SyntacticMatches, 3 SemanticMatches, 342 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45949 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=9217, Invalid=108775, Unknown=0, NotChecked=0, Total=117992 [2022-11-18 20:14:52,696 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 1732 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 5975 mSolverCounterSat, 975 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 6950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 975 IncrementalHoareTripleChecker+Valid, 5975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:52,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1732 Valid, 1422 Invalid, 6950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [975 Valid, 5975 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-18 20:14:52,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1759 states. [2022-11-18 20:14:52,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1759 to 580. [2022-11-18 20:14:52,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 579 states have (on average 1.0829015544041452) internal successors, (627), 579 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:52,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 627 transitions. [2022-11-18 20:14:52,926 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 627 transitions. Word has length 85 [2022-11-18 20:14:52,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:52,926 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 627 transitions. [2022-11-18 20:14:52,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.584905660377358) internal successors, (243), 53 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:52,927 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 627 transitions. [2022-11-18 20:14:52,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-18 20:14:52,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:52,928 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 7, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:52,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-18 20:14:53,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:53,134 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:14:53,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:53,134 INFO L85 PathProgramCache]: Analyzing trace with hash 69839097, now seen corresponding path program 3 times [2022-11-18 20:14:53,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:53,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175015547] [2022-11-18 20:14:53,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:53,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:53,843 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:53,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:53,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175015547] [2022-11-18 20:14:53,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175015547] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:14:53,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313642638] [2022-11-18 20:14:53,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:14:53,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:53,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:53,845 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:14:53,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bbb7ca-380c-4a03-b9c8-e536f22a3b27/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-18 20:14:54,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 20:14:54,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:14:54,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-18 20:14:54,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:54,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-18 20:14:54,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-18 20:14:54,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-18 20:14:54,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-18 20:14:54,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:14:54,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-18 20:14:54,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:14:54,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-18 20:14:54,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:14:54,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-18 20:14:54,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:14:54,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-18 20:14:54,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:14:54,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-18 20:14:54,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:14:54,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:14:54,504 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:14:54,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 38 [2022-11-18 20:14:54,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:14:54,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:14:54,564 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:14:54,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 38 [2022-11-18 20:14:54,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:14:54,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:14:54,587 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:14:54,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 38 [2022-11-18 20:14:54,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:14:54,880 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:14:54,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-11-18 20:14:54,916 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2022-11-18 20:14:54,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:15:16,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 55 [2022-11-18 20:15:16,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2494450 treesize of output 2490354 [2022-11-18 20:15:28,182 WARN L233 SmtUtils]: Spent 11.45s on a formula simplification that was a NOOP. DAG size: 1087 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:16:19,981 WARN L233 SmtUtils]: Spent 30.44s on a formula simplification. DAG size of input: 1080 DAG size of output: 1080 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:16:39,371 WARN L233 SmtUtils]: Spent 7.02s on a formula simplification. DAG size of input: 444 DAG size of output: 444 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:16:54,550 WARN L233 SmtUtils]: Spent 13.21s on a formula simplification. DAG size of input: 441 DAG size of output: 441 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:17:01,766 WARN L233 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 392 DAG size of output: 392 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:17:19,373 WARN L233 SmtUtils]: Spent 15.39s on a formula simplification. DAG size of input: 388 DAG size of output: 388 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:17:33,895 WARN L233 SmtUtils]: Spent 13.40s on a formula simplification. DAG size of input: 386 DAG size of output: 386 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:17:40,973 WARN L233 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 384 DAG size of output: 384 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:17:47,583 WARN L233 SmtUtils]: Spent 5.46s on a formula simplification. DAG size of input: 376 DAG size of output: 376 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:17:55,109 WARN L233 SmtUtils]: Spent 5.45s on a formula simplification. DAG size of input: 375 DAG size of output: 375 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:18:01,553 WARN L233 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 375 DAG size of output: 375 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:18:18,479 WARN L233 SmtUtils]: Spent 14.79s on a formula simplification. DAG size of input: 373 DAG size of output: 373 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:18:25,062 WARN L233 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 371 DAG size of output: 371 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:18:32,541 WARN L233 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 369 DAG size of output: 369 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:18:49,765 WARN L233 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:18:59,094 WARN L233 SmtUtils]: Spent 8.27s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:19:09,823 WARN L233 SmtUtils]: Spent 8.62s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:19:26,587 WARN L233 SmtUtils]: Spent 14.64s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:19:32,631 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:19:39,772 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:19:46,854 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:19:59,900 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:20:07,934 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:20:14,030 WARN L233 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:20:21,087 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:20:42,142 WARN L233 SmtUtils]: Spent 8.11s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:21:01,967 WARN L233 SmtUtils]: Spent 10.75s on a formula simplification. DAG size of input: 344 DAG size of output: 344 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:21:40,748 WARN L233 SmtUtils]: Spent 18.25s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:21:50,201 WARN L233 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:21:57,429 WARN L233 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:22:13,615 WARN L233 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:22:24,535 WARN L233 SmtUtils]: Spent 9.82s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:22:48,750 WARN L233 SmtUtils]: Spent 16.97s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:22:55,111 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:23:03,476 WARN L233 SmtUtils]: Spent 5.95s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:23:11,944 WARN L233 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:23:28,340 WARN L233 SmtUtils]: Spent 6.57s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:23:37,645 WARN L233 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:23:45,368 WARN L233 SmtUtils]: Spent 6.54s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:23:54,267 WARN L233 SmtUtils]: Spent 5.87s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:24:08,245 WARN L233 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:24:21,009 WARN L233 SmtUtils]: Spent 6.38s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:24:37,598 WARN L233 SmtUtils]: Spent 6.89s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:24:52,483 WARN L233 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 357 DAG size of output: 357 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:25:05,547 WARN L233 SmtUtils]: Spent 5.99s on a formula simplification. DAG size of input: 346 DAG size of output: 346 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:25:18,589 WARN L233 SmtUtils]: Spent 10.96s on a formula simplification. DAG size of input: 344 DAG size of output: 344 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:25:32,155 WARN L233 SmtUtils]: Spent 9.90s on a formula simplification. DAG size of input: 340 DAG size of output: 340 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:25:50,070 WARN L233 SmtUtils]: Spent 14.17s on a formula simplification. DAG size of input: 336 DAG size of output: 336 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:26:03,816 WARN L233 SmtUtils]: Spent 6.66s on a formula simplification. DAG size of input: 333 DAG size of output: 333 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:26:14,510 WARN L233 SmtUtils]: Spent 8.33s on a formula simplification. DAG size of input: 333 DAG size of output: 333 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)