./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/res1o.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/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_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/res1o.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/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_68893462-90f2-4326-a616-717aba1b5d4b/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 64693615f2d98484fbf4ccec390e9fe8d95f9d4648b0c6cc4a2e86f0656bfacf --- 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 20:38:47,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:38:47,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:38:47,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:38:47,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:38:47,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:38:47,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:38:47,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:38:47,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:38:47,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:38:47,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:38:47,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:38:47,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:38:47,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:38:47,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:38:47,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:38:47,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:38:47,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:38:47,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:38:47,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:38:47,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:38:47,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:38:47,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:38:47,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:38:47,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:38:47,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:38:47,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:38:47,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:38:47,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:38:47,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:38:47,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:38:47,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:38:47,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:38:47,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:38:47,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:38:47,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:38:47,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:38:47,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:38:47,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:38:47,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:38:47,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:38:47,662 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:38:47,702 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:38:47,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:38:47,703 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:38:47,704 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:38:47,705 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:38:47,705 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:38:47,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:38:47,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:38:47,706 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:38:47,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:38:47,708 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:38:47,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:38:47,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:38:47,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:38:47,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:38:47,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:38:47,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:38:47,710 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:38:47,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:38:47,711 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:38:47,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:38:47,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:38:47,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:38:47,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:38:47,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:38:47,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:38:47,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:38:47,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:38:47,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:38:47,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:38:47,715 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:38:47,715 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:38:47,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:38:47,716 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_68893462-90f2-4326-a616-717aba1b5d4b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64693615f2d98484fbf4ccec390e9fe8d95f9d4648b0c6cc4a2e86f0656bfacf [2022-11-18 20:38:47,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:38:48,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:38:48,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:38:48,012 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:38:48,014 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:38:48,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/array-fpi/res1o.c [2022-11-18 20:38:48,091 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/data/f3b3850f4/7c69610bb00f42a3a78f91ff467d926c/FLAG0317c4f10 [2022-11-18 20:38:48,574 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:38:48,574 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/sv-benchmarks/c/array-fpi/res1o.c [2022-11-18 20:38:48,581 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/data/f3b3850f4/7c69610bb00f42a3a78f91ff467d926c/FLAG0317c4f10 [2022-11-18 20:38:48,964 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/data/f3b3850f4/7c69610bb00f42a3a78f91ff467d926c [2022-11-18 20:38:48,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:38:48,968 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:38:48,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:38:48,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:38:48,981 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:38:48,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:38:48" (1/1) ... [2022-11-18 20:38:48,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@437fba93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:48, skipping insertion in model container [2022-11-18 20:38:48,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:38:48" (1/1) ... [2022-11-18 20:38:48,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:38:49,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:38:49,176 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_68893462-90f2-4326-a616-717aba1b5d4b/sv-benchmarks/c/array-fpi/res1o.c[588,601] [2022-11-18 20:38:49,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:38:49,207 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:38:49,221 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_68893462-90f2-4326-a616-717aba1b5d4b/sv-benchmarks/c/array-fpi/res1o.c[588,601] [2022-11-18 20:38:49,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:38:49,244 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:38:49,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:49 WrapperNode [2022-11-18 20:38:49,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:38:49,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:38:49,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:38:49,246 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:38:49,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:49" (1/1) ... [2022-11-18 20:38:49,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:49" (1/1) ... [2022-11-18 20:38:49,303 INFO L138 Inliner]: procedures = 17, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2022-11-18 20:38:49,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:38:49,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:38:49,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:38:49,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:38:49,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:49" (1/1) ... [2022-11-18 20:38:49,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:49" (1/1) ... [2022-11-18 20:38:49,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:49" (1/1) ... [2022-11-18 20:38:49,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:49" (1/1) ... [2022-11-18 20:38:49,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:49" (1/1) ... [2022-11-18 20:38:49,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:49" (1/1) ... [2022-11-18 20:38:49,340 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:49" (1/1) ... [2022-11-18 20:38:49,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:49" (1/1) ... [2022-11-18 20:38:49,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:38:49,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:38:49,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:38:49,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:38:49,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:49" (1/1) ... [2022-11-18 20:38:49,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:38:49,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:49,380 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:38:49,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:38:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:38:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:38:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:38:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:38:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:38:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:38:49,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:38:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:38:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:38:49,491 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:38:49,493 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:38:49,675 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:38:49,681 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:38:49,681 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 20:38:49,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:38:49 BoogieIcfgContainer [2022-11-18 20:38:49,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:38:49,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:38:49,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:38:49,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:38:49,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:38:48" (1/3) ... [2022-11-18 20:38:49,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a05cefb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:38:49, skipping insertion in model container [2022-11-18 20:38:49,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:49" (2/3) ... [2022-11-18 20:38:49,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a05cefb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:38:49, skipping insertion in model container [2022-11-18 20:38:49,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:38:49" (3/3) ... [2022-11-18 20:38:49,691 INFO L112 eAbstractionObserver]: Analyzing ICFG res1o.c [2022-11-18 20:38:49,711 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:38:49,711 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:38:49,779 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:38:49,787 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;@51b330d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:38:49,787 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:38:49,797 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states 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 20:38:49,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 20:38:49,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:49,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:49,811 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:38:49,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:49,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1202110748, now seen corresponding path program 1 times [2022-11-18 20:38:49,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:49,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996917821] [2022-11-18 20:38:49,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:49,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:50,019 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 20:38:50,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:50,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996917821] [2022-11-18 20:38:50,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996917821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:50,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:50,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:38:50,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961294512] [2022-11-18 20:38:50,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:50,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:38:50,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:50,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:38:50,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:38:50,060 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 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 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states 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 20:38:50,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:50,076 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2022-11-18 20:38:50,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:38:50,079 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2022-11-18 20:38:50,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:50,087 INFO L225 Difference]: With dead ends: 44 [2022-11-18 20:38:50,087 INFO L226 Difference]: Without dead ends: 20 [2022-11-18 20:38:50,090 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 20:38:50,097 INFO L413 NwaCegarLoop]: 28 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, 28 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 20:38:50,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:38:50,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-18 20:38:50,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-18 20:38:50,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 20:38:50,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-11-18 20:38:50,154 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 15 [2022-11-18 20:38:50,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:50,154 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-11-18 20:38:50,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states 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 20:38:50,155 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-11-18 20:38:50,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 20:38:50,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:50,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:50,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:38:50,168 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:38:50,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:50,169 INFO L85 PathProgramCache]: Analyzing trace with hash -944124056, now seen corresponding path program 1 times [2022-11-18 20:38:50,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:50,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268052025] [2022-11-18 20:38:50,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:50,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:50,498 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 20:38:50,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:50,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268052025] [2022-11-18 20:38:50,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268052025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:50,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:50,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:38:50,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453264430] [2022-11-18 20:38:50,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:50,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:38:50,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:50,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:38:50,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:38:50,502 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states 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 20:38:50,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:50,579 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2022-11-18 20:38:50,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:38:50,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2022-11-18 20:38:50,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:50,580 INFO L225 Difference]: With dead ends: 41 [2022-11-18 20:38:50,580 INFO L226 Difference]: Without dead ends: 28 [2022-11-18 20:38:50,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:38:50,582 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 24 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:38:50,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 12 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:38:50,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-18 20:38:50,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2022-11-18 20:38:50,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 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 20:38:50,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-11-18 20:38:50,593 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2022-11-18 20:38:50,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:50,594 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-11-18 20:38:50,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states 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 20:38:50,596 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-11-18 20:38:50,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:38:50,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:50,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:50,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:38:50,598 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:38:50,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:50,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1401448688, now seen corresponding path program 1 times [2022-11-18 20:38:50,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:50,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032146494] [2022-11-18 20:38:50,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:50,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:52,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:52,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:52,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032146494] [2022-11-18 20:38:52,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032146494] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:38:52,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512671300] [2022-11-18 20:38:52,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:52,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:52,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:52,342 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:38:52,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:38:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:52,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-18 20:38:52,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:38:52,718 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 10 treesize of output 8 [2022-11-18 20:38:52,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:38:52,821 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 19 treesize of output 18 [2022-11-18 20:38:53,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 26 [2022-11-18 20:38:53,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:38:53,440 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 20:38:53,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 20:38:53,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:38:53,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 26 [2022-11-18 20:38:53,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:38:53,893 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 0 case distinctions, treesize of input 28 treesize of output 12 [2022-11-18 20:38:53,944 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:53,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:38:57,049 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:38:57,050 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:38:59,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:59,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512671300] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:38:59,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:38:59,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2022-11-18 20:38:59,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72432013] [2022-11-18 20:38:59,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:38:59,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 20:38:59,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:59,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 20:38:59,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=804, Unknown=2, NotChecked=0, Total=992 [2022-11-18 20:38:59,322 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 32 states, 32 states have (on average 1.875) internal successors, (60), 32 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 20:39:00,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:00,511 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2022-11-18 20:39:00,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:39:00,512 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.875) internal successors, (60), 32 states have internal predecessors, (60), 0 states have call successors, (0), 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 23 [2022-11-18 20:39:00,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:00,513 INFO L225 Difference]: With dead ends: 49 [2022-11-18 20:39:00,513 INFO L226 Difference]: Without dead ends: 43 [2022-11-18 20:39:00,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=333, Invalid=1387, Unknown=2, NotChecked=0, Total=1722 [2022-11-18 20:39:00,516 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 42 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:00,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 84 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 113 Invalid, 0 Unknown, 122 Unchecked, 0.2s Time] [2022-11-18 20:39:00,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-18 20:39:00,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2022-11-18 20:39:00,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 20:39:00,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-11-18 20:39:00,528 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 23 [2022-11-18 20:39:00,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:00,528 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-11-18 20:39:00,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.875) internal successors, (60), 32 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 20:39:00,529 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-11-18 20:39:00,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:39:00,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:00,530 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 20:39:00,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:39:00,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:00,738 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:00,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:00,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1774307726, now seen corresponding path program 2 times [2022-11-18 20:39:00,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:00,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326559271] [2022-11-18 20:39:00,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:00,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:00,916 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:39:00,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:00,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326559271] [2022-11-18 20:39:00,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326559271] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:00,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145357883] [2022-11-18 20:39:00,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:39:00,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:00,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:00,920 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:00,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:39:01,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:39:01,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:39:01,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:39:01,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:01,138 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:39:01,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:39:01,215 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:39:01,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145357883] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:39:01,215 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:39:01,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-18 20:39:01,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270889027] [2022-11-18 20:39:01,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:39:01,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:39:01,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:01,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:39:01,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:39:01,220 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states 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 20:39:01,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:01,452 INFO L93 Difference]: Finished difference Result 80 states and 91 transitions. [2022-11-18 20:39:01,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:39:01,456 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 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 20:39:01,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:01,458 INFO L225 Difference]: With dead ends: 80 [2022-11-18 20:39:01,458 INFO L226 Difference]: Without dead ends: 48 [2022-11-18 20:39:01,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:39:01,466 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 69 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:01,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 32 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:39:01,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-18 20:39:01,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 34. [2022-11-18 20:39:01,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 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 20:39:01,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-11-18 20:39:01,488 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 25 [2022-11-18 20:39:01,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:01,493 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-11-18 20:39:01,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states 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 20:39:01,494 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-11-18 20:39:01,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 20:39:01,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:01,496 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:01,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 20:39:01,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:01,704 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:01,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:01,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1964080588, now seen corresponding path program 3 times [2022-11-18 20:39:01,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:01,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31276019] [2022-11-18 20:39:01,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:01,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:01,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:01,875 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:39:01,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:01,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31276019] [2022-11-18 20:39:01,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31276019] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:01,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680637799] [2022-11-18 20:39:01,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:39:01,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:01,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:01,878 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:01,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:39:01,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:39:01,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:39:01,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:39:01,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:02,090 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:39:02,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:39:02,170 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:39:02,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680637799] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:39:02,171 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:39:02,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-18 20:39:02,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425449337] [2022-11-18 20:39:02,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:39:02,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:39:02,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:02,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:39:02,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:39:02,173 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states 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 20:39:02,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:02,374 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2022-11-18 20:39:02,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:39:02,375 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 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 27 [2022-11-18 20:39:02,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:02,376 INFO L225 Difference]: With dead ends: 43 [2022-11-18 20:39:02,376 INFO L226 Difference]: Without dead ends: 35 [2022-11-18 20:39:02,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:39:02,378 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 52 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:02,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 25 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:39:02,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-18 20:39:02,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2022-11-18 20:39:02,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states 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 20:39:02,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-11-18 20:39:02,386 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 27 [2022-11-18 20:39:02,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:02,386 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-11-18 20:39:02,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states 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 20:39:02,387 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-11-18 20:39:02,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 20:39:02,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:02,394 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:02,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:39:02,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:02,601 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:02,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:02,602 INFO L85 PathProgramCache]: Analyzing trace with hash 666081912, now seen corresponding path program 4 times [2022-11-18 20:39:02,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:02,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610619647] [2022-11-18 20:39:02,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:02,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:05,498 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:05,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:05,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610619647] [2022-11-18 20:39:05,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610619647] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:05,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536911280] [2022-11-18 20:39:05,499 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:39:05,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:05,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:05,503 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:05,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:39:05,626 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:39:05,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:39:05,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-18 20:39:05,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:05,655 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 20:39:05,655 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 23 treesize of output 19 [2022-11-18 20:39:05,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:39:05,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 20:39:05,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-11-18 20:39:06,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:06,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:39:06,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 42 [2022-11-18 20:39:06,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:39:06,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 38 [2022-11-18 20:39:07,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 44 [2022-11-18 20:39:07,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:07,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 52 [2022-11-18 20:39:08,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:08,123 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:39:08,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 64 [2022-11-18 20:39:08,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 59 [2022-11-18 20:39:08,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2022-11-18 20:39:08,906 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:08,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:39:21,985 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:21,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536911280] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:39:21,986 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:39:21,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 23] total 62 [2022-11-18 20:39:21,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148196264] [2022-11-18 20:39:21,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:39:21,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-11-18 20:39:21,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:21,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-11-18 20:39:21,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=503, Invalid=3275, Unknown=4, NotChecked=0, Total=3782 [2022-11-18 20:39:21,992 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 62 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 62 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 20:39:29,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:29,979 INFO L93 Difference]: Finished difference Result 84 states and 96 transitions. [2022-11-18 20:39:29,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-18 20:39:29,980 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 62 states have internal predecessors, (79), 0 states have call successors, (0), 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 20:39:29,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:29,982 INFO L225 Difference]: With dead ends: 84 [2022-11-18 20:39:29,984 INFO L226 Difference]: Without dead ends: 78 [2022-11-18 20:39:29,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2400 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=990, Invalid=6662, Unknown=4, NotChecked=0, Total=7656 [2022-11-18 20:39:29,989 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 30 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 410 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:29,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 111 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 158 Invalid, 0 Unknown, 410 Unchecked, 0.2s Time] [2022-11-18 20:39:29,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-18 20:39:30,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2022-11-18 20:39:30,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.1818181818181819) internal successors, (78), 66 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 20:39:30,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2022-11-18 20:39:30,010 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 31 [2022-11-18 20:39:30,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:30,011 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2022-11-18 20:39:30,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 62 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 20:39:30,011 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2022-11-18 20:39:30,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-18 20:39:30,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:30,013 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:30,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-18 20:39:30,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 20:39:30,219 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:30,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:30,219 INFO L85 PathProgramCache]: Analyzing trace with hash 207824378, now seen corresponding path program 5 times [2022-11-18 20:39:30,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:30,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143586387] [2022-11-18 20:39:30,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:30,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:30,394 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 20:39:30,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:30,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143586387] [2022-11-18 20:39:30,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143586387] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:30,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506742223] [2022-11-18 20:39:30,395 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:39:30,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:30,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:30,396 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:30,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:39:30,504 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-18 20:39:30,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:39:30,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:39:30,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:30,625 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 20:39:30,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:39:30,726 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 20:39:30,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506742223] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:39:30,727 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:39:30,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-11-18 20:39:30,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205624581] [2022-11-18 20:39:30,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:39:30,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:39:30,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:30,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:39:30,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:39:30,729 INFO L87 Difference]: Start difference. First operand 67 states and 78 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 20:39:31,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:31,037 INFO L93 Difference]: Finished difference Result 129 states and 147 transitions. [2022-11-18 20:39:31,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:39:31,039 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 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 33 [2022-11-18 20:39:31,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:31,040 INFO L225 Difference]: With dead ends: 129 [2022-11-18 20:39:31,040 INFO L226 Difference]: Without dead ends: 74 [2022-11-18 20:39:31,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:39:31,041 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 76 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:31,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 35 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:39:31,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-18 20:39:31,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 60. [2022-11-18 20:39:31,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1355932203389831) internal successors, (67), 59 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:31,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2022-11-18 20:39:31,071 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 33 [2022-11-18 20:39:31,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:31,072 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2022-11-18 20:39:31,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 20:39:31,072 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2022-11-18 20:39:31,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-18 20:39:31,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:31,078 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:31,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:39:31,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:31,291 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:31,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:31,291 INFO L85 PathProgramCache]: Analyzing trace with hash 236928956, now seen corresponding path program 6 times [2022-11-18 20:39:31,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:31,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542880661] [2022-11-18 20:39:31,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:31,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,454 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 20:39:31,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:31,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542880661] [2022-11-18 20:39:31,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542880661] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:31,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551956292] [2022-11-18 20:39:31,455 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:39:31,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:31,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:31,457 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:31,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:39:31,576 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-18 20:39:31,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:39:31,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:39:31,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:31,699 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 20:39:31,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:39:31,782 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 20:39:31,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551956292] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:39:31,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:39:31,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-11-18 20:39:31,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897358703] [2022-11-18 20:39:31,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:39:31,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:39:31,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:31,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:39:31,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:39:31,784 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 20:39:32,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:32,032 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2022-11-18 20:39:32,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:39:32,036 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 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 35 [2022-11-18 20:39:32,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:32,037 INFO L225 Difference]: With dead ends: 69 [2022-11-18 20:39:32,037 INFO L226 Difference]: Without dead ends: 53 [2022-11-18 20:39:32,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:39:32,038 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 72 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:32,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 28 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:39:32,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-18 20:39:32,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 40. [2022-11-18 20:39:32,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 39 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 20:39:32,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2022-11-18 20:39:32,048 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 35 [2022-11-18 20:39:32,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:32,048 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2022-11-18 20:39:32,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 20:39:32,048 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2022-11-18 20:39:32,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-18 20:39:32,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:32,049 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:32,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:39:32,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:32,260 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:32,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:32,261 INFO L85 PathProgramCache]: Analyzing trace with hash 315843584, now seen corresponding path program 7 times [2022-11-18 20:39:32,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:32,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685410533] [2022-11-18 20:39:32,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:32,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:37,316 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:37,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:37,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685410533] [2022-11-18 20:39:37,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685410533] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:37,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374623238] [2022-11-18 20:39:37,317 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:39:37,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:37,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:37,320 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:37,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:39:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:37,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 83 conjunts are in the unsatisfiable core [2022-11-18 20:39:37,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:37,631 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 11 treesize of output 7 [2022-11-18 20:39:37,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:37,745 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 20:39:38,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:38,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-11-18 20:39:38,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:38,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:38,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:38,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-18 20:39:38,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:38,778 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:39:38,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:38,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:38,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 54 [2022-11-18 20:39:39,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:39,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:39,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:39,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:39:39,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 57 [2022-11-18 20:39:39,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:39,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 48 [2022-11-18 20:39:40,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:40,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:40,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:40,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:40,049 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:39:40,064 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 20:39:40,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 59 [2022-11-18 20:39:40,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:40,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:40,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:40,690 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:39:40,737 INFO L321 Elim1Store]: treesize reduction 64, result has 23.8 percent of original size [2022-11-18 20:39:40,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 106 treesize of output 104 [2022-11-18 20:39:41,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:41,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:41,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:41,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:41,498 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:39:41,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:41,501 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:39:41,546 INFO L321 Elim1Store]: treesize reduction 64, result has 23.8 percent of original size [2022-11-18 20:39:41,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 101 treesize of output 103 [2022-11-18 20:39:42,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:42,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:42,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:42,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:42,094 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:39:42,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 54 [2022-11-18 20:39:42,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:42,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:42,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:42,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:42,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:39:42,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 59 [2022-11-18 20:39:42,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:42,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 49 [2022-11-18 20:39:43,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:43,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 20 [2022-11-18 20:39:43,302 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:43,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:41:29,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:41:29,568 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:41:29,592 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 27 refuted. 9 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:41:29,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374623238] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:41:29,593 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:41:29,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 29, 27] total 82 [2022-11-18 20:41:29,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006968032] [2022-11-18 20:41:29,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:41:29,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-11-18 20:41:29,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:29,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-11-18 20:41:29,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=543, Invalid=6066, Unknown=33, NotChecked=0, Total=6642 [2022-11-18 20:41:29,597 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 82 states, 82 states have (on average 1.3414634146341464) internal successors, (110), 82 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 20:42:10,714 WARN L233 SmtUtils]: Spent 27.49s on a formula simplification. DAG size of input: 239 DAG size of output: 231 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:43:23,020 WARN L233 SmtUtils]: Spent 22.65s on a formula simplification that was a NOOP. DAG size: 209 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:43:58,638 WARN L233 SmtUtils]: Spent 9.45s on a formula simplification that was a NOOP. DAG size: 152 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:45:32,393 WARN L233 SmtUtils]: Spent 8.21s on a formula simplification that was a NOOP. DAG size: 151 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:49:26,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:26,228 INFO L93 Difference]: Finished difference Result 141 states and 161 transitions. [2022-11-18 20:49:26,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-11-18 20:49:26,229 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.3414634146341464) internal successors, (110), 82 states have internal predecessors, (110), 0 states have call successors, (0), 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 39 [2022-11-18 20:49:26,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:26,230 INFO L225 Difference]: With dead ends: 141 [2022-11-18 20:49:26,230 INFO L226 Difference]: Without dead ends: 134 [2022-11-18 20:49:26,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5345 ImplicationChecksByTransitivity, 582.4s TimeCoverageRelationStatistics Valid=1403, Invalid=16234, Unknown=185, NotChecked=0, Total=17822 [2022-11-18 20:49:26,235 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 204 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 1764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1190 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:26,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 161 Invalid, 1764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 526 Invalid, 0 Unknown, 1190 Unchecked, 0.8s Time] [2022-11-18 20:49:26,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-18 20:49:26,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 89. [2022-11-18 20:49:26,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.1704545454545454) internal successors, (103), 88 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 20:49:26,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 103 transitions. [2022-11-18 20:49:26,273 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 103 transitions. Word has length 39 [2022-11-18 20:49:26,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:26,273 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 103 transitions. [2022-11-18 20:49:26,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 1.3414634146341464) internal successors, (110), 82 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 20:49:26,274 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 103 transitions. [2022-11-18 20:49:26,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-18 20:49:26,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:26,275 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:26,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-18 20:49:26,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:49:26,480 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:26,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:26,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1363759742, now seen corresponding path program 8 times [2022-11-18 20:49:26,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:26,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517181176] [2022-11-18 20:49:26,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:26,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:26,724 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 20:49:26,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:26,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517181176] [2022-11-18 20:49:26,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517181176] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:49:26,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130063792] [2022-11-18 20:49:26,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:49:26,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:49:26,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:49:26,727 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:49:26,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:49:26,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:49:26,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:49:26,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:49:26,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:49:27,088 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 20:49:27,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:49:27,286 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 20:49:27,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130063792] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:49:27,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:49:27,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-11-18 20:49:27,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659405068] [2022-11-18 20:49:27,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:49:27,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:49:27,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:27,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:49:27,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:49:27,288 INFO L87 Difference]: Start difference. First operand 89 states and 103 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 20:49:27,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:27,755 INFO L93 Difference]: Finished difference Result 164 states and 185 transitions. [2022-11-18 20:49:27,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:49:27,756 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 41 [2022-11-18 20:49:27,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:27,756 INFO L225 Difference]: With dead ends: 164 [2022-11-18 20:49:27,757 INFO L226 Difference]: Without dead ends: 100 [2022-11-18 20:49:27,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 68 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:49:27,758 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 94 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:27,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 36 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:49:27,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-18 20:49:27,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 78. [2022-11-18 20:49:27,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.12987012987013) internal successors, (87), 77 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 20:49:27,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2022-11-18 20:49:27,798 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 41 [2022-11-18 20:49:27,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:27,799 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2022-11-18 20:49:27,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 20:49:27,799 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2022-11-18 20:49:27,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 20:49:27,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:27,802 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:27,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:49:28,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:49:28,009 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:28,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:28,009 INFO L85 PathProgramCache]: Analyzing trace with hash -554920636, now seen corresponding path program 9 times [2022-11-18 20:49:28,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:28,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637710461] [2022-11-18 20:49:28,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:28,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:28,237 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 20:49:28,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:28,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637710461] [2022-11-18 20:49:28,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637710461] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:49:28,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711363529] [2022-11-18 20:49:28,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:49:28,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:49:28,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:49:28,239 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:49:28,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:49:28,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 20:49:28,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:49:28,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:49:28,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:49:28,663 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 20:49:28,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:49:28,836 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 20:49:28,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711363529] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:49:28,836 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:49:28,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-11-18 20:49:28,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130477723] [2022-11-18 20:49:28,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:49:28,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:49:28,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:28,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:49:28,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:49:28,841 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:29,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:29,360 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2022-11-18 20:49:29,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:49:29,361 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-11-18 20:49:29,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:29,361 INFO L225 Difference]: With dead ends: 87 [2022-11-18 20:49:29,361 INFO L226 Difference]: Without dead ends: 67 [2022-11-18 20:49:29,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 74 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:49:29,362 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 74 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:29,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 31 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:49:29,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-18 20:49:29,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 48. [2022-11-18 20:49:29,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 47 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 20:49:29,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2022-11-18 20:49:29,381 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 43 [2022-11-18 20:49:29,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:29,382 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2022-11-18 20:49:29,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:29,382 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2022-11-18 20:49:29,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-18 20:49:29,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:29,383 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:29,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:49:29,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:49:29,589 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:29,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:29,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1719679608, now seen corresponding path program 10 times [2022-11-18 20:49:29,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:29,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046601651] [2022-11-18 20:49:29,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:29,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:35,366 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:35,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:35,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046601651] [2022-11-18 20:49:35,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046601651] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:49:35,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138092221] [2022-11-18 20:49:35,367 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:49:35,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:49:35,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:49:35,368 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:49:35,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68893462-90f2-4326-a616-717aba1b5d4b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:49:35,589 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:49:35,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:49:35,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 107 conjunts are in the unsatisfiable core [2022-11-18 20:49:35,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:49:35,619 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 11 treesize of output 7 [2022-11-18 20:49:35,629 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 10 treesize of output 8 [2022-11-18 20:49:35,738 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 20:49:35,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-11-18 20:49:36,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 52 [2022-11-18 20:49:36,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 67 [2022-11-18 20:49:37,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:37,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:37,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:37,233 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-18 20:49:37,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 86 [2022-11-18 20:49:37,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:37,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:37,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:37,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:37,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:37,635 INFO L321 Elim1Store]: treesize reduction 42, result has 2.3 percent of original size [2022-11-18 20:49:37,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 13 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 3 case distinctions, treesize of input 92 treesize of output 98 [2022-11-18 20:49:38,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:38,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:38,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:38,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:38,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:38,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:38,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:38,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:38,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:38,104 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-11-18 20:49:38,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 16 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 95 treesize of output 104 [2022-11-18 20:49:38,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:38,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:38,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:38,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:38,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:38,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:38,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:38,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:38,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:38,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:38,592 INFO L321 Elim1Store]: treesize reduction 124, result has 0.8 percent of original size [2022-11-18 20:49:38,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 19 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 95 treesize of output 107 [2022-11-18 20:49:39,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:39,542 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:49:39,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:39,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:39,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:39,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:39,552 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:49:39,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:39,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:39,557 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:49:39,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:39,560 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:49:39,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:39,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:39,564 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:49:39,582 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-18 20:49:39,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 8 disjoint index pairs (out of 36 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 85 treesize of output 84 [2022-11-18 20:49:40,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:40,943 INFO L321 Elim1Store]: treesize reduction 458, result has 37.2 percent of original size [2022-11-18 20:49:40,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 2 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 39 case distinctions, treesize of input 198 treesize of output 362 [2022-11-18 20:49:45,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:45,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:45,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:45,457 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:49:45,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:45,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:45,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:45,747 INFO L321 Elim1Store]: treesize reduction 373, result has 32.2 percent of original size [2022-11-18 20:49:45,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 7 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 30 case distinctions, treesize of input 190 treesize of output 280 [2022-11-18 20:49:47,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:47,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:47,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:47,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:47,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:47,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:47,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:47,517 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:49:47,809 INFO L321 Elim1Store]: treesize reduction 346, result has 30.9 percent of original size [2022-11-18 20:49:47,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 7 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 30 case distinctions, treesize of input 169 treesize of output 247 [2022-11-18 20:49:49,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:49,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:49,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:49,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:49:49,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:49,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:49,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2022-11-18 20:49:49,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:49,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:49,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:49,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:49,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:49,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:49,521 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:49:49,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 66 [2022-11-18 20:49:49,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:49,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:49,928 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:49:49,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:49,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:49,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:49,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:49,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 67 [2022-11-18 20:49:50,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:50,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 60 [2022-11-18 20:49:50,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:50,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 24 [2022-11-18 20:49:50,768 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 12 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:50,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:51:37,668 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 63 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:37,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138092221] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:51:37,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:51:37,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39, 39] total 112 [2022-11-18 20:51:37,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911144762] [2022-11-18 20:51:37,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:51:37,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2022-11-18 20:51:37,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:37,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2022-11-18 20:51:37,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1399, Invalid=11014, Unknown=19, NotChecked=0, Total=12432 [2022-11-18 20:51:37,672 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 112 states, 112 states have (on average 1.1339285714285714) internal successors, (127), 112 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 20:52:15,981 WARN L233 SmtUtils]: Spent 6.64s on a formula simplification that was a NOOP. DAG size: 156 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:52:44,842 WARN L233 SmtUtils]: Spent 6.79s on a formula simplification that was a NOOP. DAG size: 156 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:53:02,998 WARN L233 SmtUtils]: Spent 6.50s on a formula simplification that was a NOOP. DAG size: 120 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)